8th day of python challenges 111-117

venv/lib/python3.6/site-packages/isort/__init__.py

@@ -0,0 +1,28 @@
+"""__init__.py.
+
+Defines the isort module to include the SortImports utility class as well as any defined settings.
+
+Copyright (C) 2013  Timothy Edmund Crosley
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
+to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or
+substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+"""
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+from . import settings  # noqa: F401
+from .isort import SortImports  # noqa: F401
+
+__version__ = "4.3.21"

venv/lib/python3.6/site-packages/isort/__main__.py

@@ -0,0 +1,9 @@
+from __future__ import absolute_import
+
+from isort.pie_slice import apply_changes_to_python_environment
+
+apply_changes_to_python_environment()
+
+from isort.main import main  # noqa: E402 isort:skip
+
+main()

venv/lib/python3.6/site-packages/isort/finders.py

@@ -0,0 +1,382 @@
+"""Finders try to find right section for passed module name
+"""
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+import inspect
+import os
+import os.path
+import re
+import sys
+import sysconfig
+from fnmatch import fnmatch
+from glob import glob
+
+from .pie_slice import PY2
+from .utils import chdir, exists_case_sensitive
+
+try:
+    from pipreqs import pipreqs
+except ImportError:
+    pipreqs = None
+
+try:
+    from pip_api import parse_requirements
+except ImportError:
+    parse_requirements = None
+
+try:
+    from requirementslib import Pipfile
+except ImportError:
+    Pipfile = None
+
+try:
+    from functools import lru_cache
+except ImportError:
+    from backports.functools_lru_cache import lru_cache
+
+
+KNOWN_SECTION_MAPPING = {
+    'STDLIB': 'STANDARD_LIBRARY',
+    'FUTURE': 'FUTURE_LIBRARY',
+    'FIRSTPARTY': 'FIRST_PARTY',
+    'THIRDPARTY': 'THIRD_PARTY',
+}
+
+
+class BaseFinder(object):
+    def __init__(self, config, sections):
+        self.config = config
+        self.sections = sections
+
+
+class ForcedSeparateFinder(BaseFinder):
+    def find(self, module_name):
+        for forced_separate in self.config['forced_separate']:
+            # Ensure all forced_separate patterns will match to end of string
+            path_glob = forced_separate
+            if not forced_separate.endswith('*'):
+                path_glob = '%s*' % forced_separate
+
+            if fnmatch(module_name, path_glob) or fnmatch(module_name, '.' + path_glob):
+                return forced_separate
+
+
+class LocalFinder(BaseFinder):
+    def find(self, module_name):
+        if module_name.startswith("."):
+            return self.sections.LOCALFOLDER
+
+
+class KnownPatternFinder(BaseFinder):
+    def __init__(self, config, sections):
+        super(KnownPatternFinder, self).__init__(config, sections)
+
+        self.known_patterns = []
+        for placement in reversed(self.sections):
+            known_placement = KNOWN_SECTION_MAPPING.get(placement, placement)
+            config_key = 'known_{0}'.format(known_placement.lower())
+            known_patterns = self.config.get(config_key, [])
+            known_patterns = [
+                pattern
+                for known_pattern in known_patterns
+                for pattern in self._parse_known_pattern(known_pattern)
+            ]
+            for known_pattern in known_patterns:
+                regexp = '^' + known_pattern.replace('*', '.*').replace('?', '.?') + '$'
+                self.known_patterns.append((re.compile(regexp), placement))
+
+    @staticmethod
+    def _is_package(path):
+        """
+        Evaluates if path is a python package
+        """
+        if PY2:
+            return os.path.exists(os.path.join(path, '__init__.py'))
+        else:
+            return os.path.isdir(path)
+
+    def _parse_known_pattern(self, pattern):
+        """
+        Expand pattern if identified as a directory and return found sub packages
+        """
+        if pattern.endswith(os.path.sep):
+            patterns = [
+                filename
+                for filename in os.listdir(pattern)
+                if self._is_package(os.path.join(pattern, filename))
+            ]
+        else:
+            patterns = [pattern]
+
+        return patterns
+
+    def find(self, module_name):
+        # Try to find most specific placement instruction match (if any)
+        parts = module_name.split('.')
+        module_names_to_check = ('.'.join(parts[:first_k]) for first_k in range(len(parts), 0, -1))
+        for module_name_to_check in module_names_to_check:
+            for pattern, placement in self.known_patterns:
+                if pattern.match(module_name_to_check):
+                    return placement
+
+
+class PathFinder(BaseFinder):
+    def __init__(self, config, sections):
+        super(PathFinder, self).__init__(config, sections)
+
+        # restore the original import path (i.e. not the path to bin/isort)
+        self.paths = [os.getcwd()]
+
+        # virtual env
+        self.virtual_env = self.config.get('virtual_env') or os.environ.get('VIRTUAL_ENV')
+        if self.virtual_env:
+            self.virtual_env = os.path.realpath(self.virtual_env)
+        self.virtual_env_src = False
+        if self.virtual_env:
+            self.virtual_env_src = '{0}/src/'.format(self.virtual_env)
+            for path in glob('{0}/lib/python*/site-packages'.format(self.virtual_env)):
+                if path not in self.paths:
+                    self.paths.append(path)
+            for path in glob('{0}/lib/python*/*/site-packages'.format(self.virtual_env)):
+                if path not in self.paths:
+                    self.paths.append(path)
+            for path in glob('{0}/src/*'.format(self.virtual_env)):
+                if os.path.isdir(path):
+                    self.paths.append(path)
+
+        # conda
+        self.conda_env = self.config.get('conda_env') or os.environ.get('CONDA_PREFIX')
+        if self.conda_env:
+            self.conda_env = os.path.realpath(self.conda_env)
+            for path in glob('{0}/lib/python*/site-packages'.format(self.conda_env)):
+                if path not in self.paths:
+                    self.paths.append(path)
+            for path in glob('{0}/lib/python*/*/site-packages'.format(self.conda_env)):
+                if path not in self.paths:
+                    self.paths.append(path)
+
+        # handle case-insensitive paths on windows
+        self.stdlib_lib_prefix = os.path.normcase(sysconfig.get_paths()['stdlib'])
+        if self.stdlib_lib_prefix not in self.paths:
+            self.paths.append(self.stdlib_lib_prefix)
+
+        # handle compiled libraries
+        self.ext_suffix = sysconfig.get_config_var("EXT_SUFFIX") or ".so"
+
+        # add system paths
+        for path in sys.path[1:]:
+            if path not in self.paths:
+                self.paths.append(path)
+
+    def find(self, module_name):
+        for prefix in self.paths:
+            package_path = "/".join((prefix, module_name.split(".")[0]))
+            is_module = (exists_case_sensitive(package_path + ".py") or
+                         exists_case_sensitive(package_path + ".so") or
+                         exists_case_sensitive(package_path + self.ext_suffix) or
+                         exists_case_sensitive(package_path + "/__init__.py"))
+            is_package = exists_case_sensitive(package_path) and os.path.isdir(package_path)
+            if is_module or is_package:
+                if 'site-packages' in prefix:
+                    return self.sections.THIRDPARTY
+                if 'dist-packages' in prefix:
+                    return self.sections.THIRDPARTY
+                if self.virtual_env and self.virtual_env_src in prefix:
+                    return self.sections.THIRDPARTY
+                if self.conda_env and self.conda_env in prefix:
+                    return self.sections.THIRDPARTY
+                if os.path.normcase(prefix).startswith(self.stdlib_lib_prefix):
+                    return self.sections.STDLIB
+                return self.config['default_section']
+
+
+class ReqsBaseFinder(BaseFinder):
+    def __init__(self, config, sections, path='.'):
+        super(ReqsBaseFinder, self).__init__(config, sections)
+        self.path = path
+        if self.enabled:
+            self.mapping = self._load_mapping()
+            self.names = self._load_names()
+
+    @staticmethod
+    def _load_mapping():
+        """Return list of mappings `package_name -> module_name`
+
+        Example:
+            django-haystack -> haystack
+        """
+        if not pipreqs:
+            return
+        path = os.path.dirname(inspect.getfile(pipreqs))
+        path = os.path.join(path, 'mapping')
+        with open(path) as f:
+            # pypi_name: import_name
+            return dict(line.strip().split(":")[::-1] for line in f)
+
+    def _load_names(self):
+        """Return list of thirdparty modules from requirements
+        """
+        names = []
+        for path in self._get_files():
+            for name in self._get_names(path):
+                names.append(self._normalize_name(name))
+        return names
+
+    @staticmethod
+    def _get_parents(path):
+        prev = ''
+        while path != prev:
+            prev = path
+            yield path
+            path = os.path.dirname(path)
+
+    def _get_files(self):
+        """Return paths to all requirements files
+        """
+        path = os.path.abspath(self.path)
+        if os.path.isfile(path):
+            path = os.path.dirname(path)
+
+        for path in self._get_parents(path):
+            for file_path in self._get_files_from_dir(path):
+                yield file_path
+
+    def _normalize_name(self, name):
+        """Convert package name to module name
+
+        Examples:
+            Django -> django
+            django-haystack -> haystack
+            Flask-RESTFul -> flask_restful
+        """
+        if self.mapping:
+            name = self.mapping.get(name, name)
+        return name.lower().replace('-', '_')
+
+    def find(self, module_name):
+        # required lib not installed yet
+        if not self.enabled:
+            return
+
+        module_name, _sep, _submodules = module_name.partition('.')
+        module_name = module_name.lower()
+        if not module_name:
+            return
+
+        for name in self.names:
+            if module_name == name:
+                return self.sections.THIRDPARTY
+
+
+class RequirementsFinder(ReqsBaseFinder):
+    exts = ('.txt', '.in')
+    enabled = bool(parse_requirements)
+
+    def _get_files_from_dir(self, path):
+        """Return paths to requirements files from passed dir.
+        """
+        return RequirementsFinder._get_files_from_dir_cached(path)
+
+    @classmethod
+    @lru_cache(maxsize=16)
+    def _get_files_from_dir_cached(cls, path):
+        result = []
+
+        for fname in os.listdir(path):
+            if 'requirements' not in fname:
+                continue
+            full_path = os.path.join(path, fname)
+
+            # *requirements*/*.{txt,in}
+            if os.path.isdir(full_path):
+                for subfile_name in os.listdir(path):
+                    for ext in cls.exts:
+                        if subfile_name.endswith(ext):
+                            result.append(os.path.join(path, subfile_name))
+                continue
+
+            # *requirements*.{txt,in}
+            if os.path.isfile(full_path):
+                for ext in cls.exts:
+                    if fname.endswith(ext):
+                        result.append(full_path)
+                        break
+
+        return result
+
+    def _get_names(self, path):
+        """Load required packages from path to requirements file
+        """
+        return RequirementsFinder._get_names_cached(path)
+
+    @classmethod
+    @lru_cache(maxsize=16)
+    def _get_names_cached(cls, path):
+        results = []
+
+        with chdir(os.path.dirname(path)):
+            requirements = parse_requirements(path)
+            for req in requirements.values():
+                if req.name:
+                    results.append(req.name)
+
+        return results
+
+
+class PipfileFinder(ReqsBaseFinder):
+    enabled = bool(Pipfile)
+
+    def _get_names(self, path):
+        with chdir(path):
+            project = Pipfile.load(path)
+            for req in project.packages:
+                yield req.name
+
+    def _get_files_from_dir(self, path):
+        if 'Pipfile' in os.listdir(path):
+            yield path
+
+
+class DefaultFinder(BaseFinder):
+    def find(self, module_name):
+        return self.config['default_section']
+
+
+class FindersManager(object):
+    finders = (
+        ForcedSeparateFinder,
+        LocalFinder,
+        KnownPatternFinder,
+        PathFinder,
+        PipfileFinder,
+        RequirementsFinder,
+        DefaultFinder,
+    )
+
+    def __init__(self, config, sections, finders=None):
+        self.verbose = config.get('verbose', False)
+
+        finders = self.finders if finders is None else finders
+        self.finders = []
+        for finder in finders:
+            try:
+                self.finders.append(finder(config, sections))
+            except Exception as exception:
+                # if one finder fails to instantiate isort can continue using the rest
+                if self.verbose:
+                    print('{} encountered an error ({}) during instantiation and cannot be used'.format(finder.__name__,
+                                                                                                        str(exception)))
+        self.finders = tuple(self.finders)
+
+    def find(self, module_name):
+        for finder in self.finders:
+            try:
+                section = finder.find(module_name)
+            except Exception as exception:
+                # isort has to be able to keep trying to identify the correct import section even if one approach fails
+                if self.verbose:
+                    print('{} encountered an error ({}) while trying to identify the {} module'.format(finder.__name__,
+                                                                                                       str(exception),
+                                                                                                       module_name))
+            if section is not None:
+                return section

venv/lib/python3.6/site-packages/isort/hooks.py

@@ -0,0 +1,91 @@
+"""isort.py.
+
+Defines a git hook to allow pre-commit warnings and errors about import order.
+
+usage:
+    exit_code = git_hook(strict=True|False, modify=True|False)
+
+Copyright (C) 2015  Helen Sherwood-Taylor
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
+to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or
+substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+"""
+import subprocess
+
+from isort import SortImports
+
+
+def get_output(command):
+    """
+    Run a command and return raw output
+
+    :param str command: the command to run
+    :returns: the stdout output of the command
+    """
+    return subprocess.check_output(command.split())
+
+
+def get_lines(command):
+    """
+    Run a command and return lines of output
+
+    :param str command: the command to run
+    :returns: list of whitespace-stripped lines output by command
+    """
+    stdout = get_output(command)
+    return [line.strip().decode('utf-8') for line in stdout.splitlines()]
+
+
+def git_hook(strict=False, modify=False):
+    """
+    Git pre-commit hook to check staged files for isort errors
+
+    :param bool strict - if True, return number of errors on exit,
+        causing the hook to fail. If False, return zero so it will
+        just act as a warning.
+    :param bool modify - if True, fix the sources if they are not
+        sorted properly. If False, only report result without
+        modifying anything.
+
+    :return number of errors if in strict mode, 0 otherwise.
+    """
+
+    # Get list of files modified and staged
+    diff_cmd = "git diff-index --cached --name-only --diff-filter=ACMRTUXB HEAD"
+    files_modified = get_lines(diff_cmd)
+
+    errors = 0
+    for filename in files_modified:
+        if filename.endswith('.py'):
+            # Get the staged contents of the file
+            staged_cmd = "git show :%s" % filename
+            staged_contents = get_output(staged_cmd)
+
+            sort = SortImports(
+                file_path=filename,
+                file_contents=staged_contents.decode(),
+                check=True
+            )
+
+            if sort.incorrectly_sorted:
+                errors += 1
+                if modify:
+                    SortImports(
+                        file_path=filename,
+                        file_contents=staged_contents.decode(),
+                        check=False,
+                    )
+
+    return errors if strict else 0

venv/lib/python3.6/site-packages/isort/main.py

@@ -0,0 +1,401 @@
+'''  Tool for sorting imports alphabetically, and automatically separated into sections.
+
+Copyright (C) 2013  Timothy Edmund Crosley
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
+to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or
+substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+'''
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+import argparse
+import functools
+import glob
+import os
+import re
+import sys
+
+import setuptools
+
+from isort import SortImports, __version__
+from isort.settings import DEFAULT_SECTIONS, WrapModes, default, from_path, should_skip
+
+INTRO = r"""
+/#######################################################################\
+
+     `sMMy`
+     .yyyy-                                                      `
+    ##soos##                                                    ./o.
+          `     ``..-..`         ``...`.``         `   ```` ``-ssso```
+     .s:-y-   .+osssssso/.     ./ossss+:so+:`    :+o-`/osso:+sssssssso/
+     .s::y-   osss+.``.``     -ssss+-.`-ossso`   ssssso/::..::+ssss:::.
+     .s::y-   /ssss+//:-.`   `ssss+     `ssss+   sssso`       :ssss`
+     .s::y-   `-/+oossssso/  `ssss/      sssso   ssss/        :ssss`
+     .y-/y-       ````:ssss`  ossso.    :ssss:   ssss/        :ssss.
+     `/so:`    `-//::/osss+   `+ssss+-/ossso:    /sso-        `osssso/.
+       \/      `-/oooo++/-      .:/++:/++/-`      ..           `://++/.
+
+
+         isort your Python imports for you so you don't have to
+
+                            VERSION {0}
+
+\########################################################################/
+""".format(__version__)
+
+shebang_re = re.compile(br'^#!.*\bpython[23w]?\b')
+
+
+def is_python_file(path):
+    _root, ext = os.path.splitext(path)
+    if ext in ('.py', '.pyi'):
+        return True
+    if ext in ('.pex', ):
+        return False
+
+    # Skip editor backup files.
+    if path.endswith('~'):
+        return False
+
+    try:
+        with open(path, 'rb') as fp:
+            line = fp.readline(100)
+    except IOError:
+        return False
+    else:
+        return bool(shebang_re.match(line))
+
+
+class SortAttempt(object):
+    def __init__(self, incorrectly_sorted, skipped):
+        self.incorrectly_sorted = incorrectly_sorted
+        self.skipped = skipped
+
+
+def sort_imports(file_name, **arguments):
+    try:
+        result = SortImports(file_name, **arguments)
+        return SortAttempt(result.incorrectly_sorted, result.skipped)
+    except IOError as e:
+        print("WARNING: Unable to parse file {0} due to {1}".format(file_name, e))
+        return None
+
+
+def iter_source_code(paths, config, skipped):
+    """Iterate over all Python source files defined in paths."""
+    if 'not_skip' in config:
+        config['skip'] = list(set(config['skip']).difference(config['not_skip']))
+
+    for path in paths:
+        if os.path.isdir(path):
+            for dirpath, dirnames, filenames in os.walk(path, topdown=True, followlinks=True):
+                for dirname in list(dirnames):
+                    if should_skip(dirname, config, dirpath):
+                        skipped.append(dirname)
+                        dirnames.remove(dirname)
+                for filename in filenames:
+                    filepath = os.path.join(dirpath, filename)
+                    if is_python_file(filepath):
+                        relative_file = os.path.relpath(filepath, path)
+                        if should_skip(relative_file, config, path):
+                            skipped.append(filename)
+                        else:
+                            yield filepath
+        else:
+            yield path
+
+
+class ISortCommand(setuptools.Command):
+    """The :class:`ISortCommand` class is used by setuptools to perform
+    imports checks on registered modules.
+    """
+
+    description = "Run isort on modules registered in setuptools"
+    user_options = []
+
+    def initialize_options(self):
+        default_settings = default.copy()
+        for key, value in default_settings.items():
+            setattr(self, key, value)
+
+    def finalize_options(self):
+        "Get options from config files."
+        self.arguments = {}
+        computed_settings = from_path(os.getcwd())
+        for key, value in computed_settings.items():
+            self.arguments[key] = value
+
+    def distribution_files(self):
+        """Find distribution packages."""
+        # This is verbatim from flake8
+        if self.distribution.packages:
+            package_dirs = self.distribution.package_dir or {}
+            for package in self.distribution.packages:
+                pkg_dir = package
+                if package in package_dirs:
+                    pkg_dir = package_dirs[package]
+                elif '' in package_dirs:
+                    pkg_dir = package_dirs[''] + os.path.sep + pkg_dir
+                yield pkg_dir.replace('.', os.path.sep)
+
+        if self.distribution.py_modules:
+            for filename in self.distribution.py_modules:
+                yield "%s.py" % filename
+        # Don't miss the setup.py file itself
+        yield "setup.py"
+
+    def run(self):
+        arguments = self.arguments
+        wrong_sorted_files = False
+        arguments['check'] = True
+        for path in self.distribution_files():
+            for python_file in glob.iglob(os.path.join(path, '*.py')):
+                try:
+                    incorrectly_sorted = SortImports(python_file, **arguments).incorrectly_sorted
+                    if incorrectly_sorted:
+                        wrong_sorted_files = True
+                except IOError as e:
+                    print("WARNING: Unable to parse file {0} due to {1}".format(python_file, e))
+        if wrong_sorted_files:
+            sys.exit(1)
+
+
+def parse_args(argv=None):
+    parser = argparse.ArgumentParser(description='Sort Python import definitions alphabetically '
+                                                 'within logical sections. Run with no arguments to run '
+                                                 'interactively. Run with `-` as the first argument to read from '
+                                                 'stdin. Otherwise provide a list of files to sort.')
+    inline_args_group = parser.add_mutually_exclusive_group()
+    parser.add_argument('-a', '--add-import', dest='add_imports', action='append',
+                        help='Adds the specified import line to all files, '
+                             'automatically determining correct placement.')
+    parser.add_argument('-ac', '--atomic', dest='atomic', action='store_true',
+                        help="Ensures the output doesn't save if the resulting file contains syntax errors.")
+    parser.add_argument('-af', '--force-adds', dest='force_adds', action='store_true',
+                        help='Forces import adds even if the original file is empty.')
+    parser.add_argument('-b', '--builtin', dest='known_standard_library', action='append',
+                        help='Force sortImports to recognize a module as part of the python standard library.')
+    parser.add_argument('-c', '--check-only', action='store_true', dest="check",
+                        help='Checks the file for unsorted / unformatted imports and prints them to the '
+                             'command line without modifying the file.')
+    parser.add_argument('-ca', '--combine-as', dest='combine_as_imports', action='store_true',
+                        help="Combines as imports on the same line.")
+    parser.add_argument('-cs', '--combine-star', dest='combine_star', action='store_true',
+                        help="Ensures that if a star import is present, nothing else is imported from that namespace.")
+    parser.add_argument('-d', '--stdout', help='Force resulting output to stdout, instead of in-place.',
+                        dest='write_to_stdout', action='store_true')
+    parser.add_argument('-df', '--diff', dest='show_diff', action='store_true',
+                        help="Prints a diff of all the changes isort would make to a file, instead of "
+                             "changing it in place")
+    parser.add_argument('-ds', '--no-sections', help='Put all imports into the same section bucket', dest='no_sections',
+                        action='store_true')
+    parser.add_argument('-dt', '--dont-order-by-type', dest='dont_order_by_type',
+                        action='store_true', help='Only order imports alphabetically, do not attempt type ordering')
+    parser.add_argument('-e', '--balanced', dest='balanced_wrapping', action='store_true',
+                        help='Balances wrapping to produce the most consistent line length possible')
+    parser.add_argument('-f', '--future', dest='known_future_library', action='append',
+                        help='Force sortImports to recognize a module as part of the future compatibility libraries.')
+    parser.add_argument('-fas', '--force-alphabetical-sort', action='store_true', dest="force_alphabetical_sort",
+                        help='Force all imports to be sorted as a single section')
+    parser.add_argument('-fass', '--force-alphabetical-sort-within-sections', action='store_true',
+                        dest="force_alphabetical_sort", help='Force all imports to be sorted alphabetically within a '
+                                                             'section')
+    parser.add_argument('-ff', '--from-first', dest='from_first',
+                        help="Switches the typical ordering preference, showing from imports first then straight ones.")
+    parser.add_argument('-fgw', '--force-grid-wrap', nargs='?', const=2, type=int, dest="force_grid_wrap",
+                        help='Force number of from imports (defaults to 2) to be grid wrapped regardless of line '
+                             'length')
+    parser.add_argument('-fss', '--force-sort-within-sections', action='store_true', dest="force_sort_within_sections",
+                        help='Force imports to be sorted by module, independent of import_type')
+    parser.add_argument('-i', '--indent', help='String to place for indents defaults to "    " (4 spaces).',
+                        dest='indent', type=str)
+    parser.add_argument('-j', '--jobs', help='Number of files to process in parallel.',
+                        dest='jobs', type=int)
+    parser.add_argument('-k', '--keep-direct-and-as', dest='keep_direct_and_as_imports', action='store_true',
+                        help="Turns off default behavior that removes direct imports when as imports exist.")
+    parser.add_argument('-l', '--lines', help='[Deprecated] The max length of an import line (used for wrapping '
+                        'long imports).',
+                        dest='line_length', type=int)
+    parser.add_argument('-lai', '--lines-after-imports', dest='lines_after_imports', type=int)
+    parser.add_argument('-lbt', '--lines-between-types', dest='lines_between_types', type=int)
+    parser.add_argument('-le', '--line-ending', dest='line_ending',
+                        help="Forces line endings to the specified value. If not set, values will be guessed per-file.")
+    parser.add_argument('-ls', '--length-sort', help='Sort imports by their string length.',
+                        dest='length_sort', action='store_true')
+    parser.add_argument('-m', '--multi-line', dest='multi_line_output', type=int, choices=range(len(WrapModes)),
+                        help='Multi line output (0-grid, 1-vertical, 2-hanging, 3-vert-hanging, 4-vert-grid, '
+                        '5-vert-grid-grouped, 6-vert-grid-grouped-no-comma).')
+    inline_args_group.add_argument('-nis', '--no-inline-sort', dest='no_inline_sort', action='store_true',
+                        help='Leaves `from` imports with multiple imports \'as-is\' (e.g. `from foo import a, c ,b`).')
+    parser.add_argument('-nlb', '--no-lines-before', help='Sections which should not be split with previous by empty lines',
+                        dest='no_lines_before', action='append')
+    parser.add_argument('-ns', '--dont-skip', help='Files that sort imports should never skip over.',
+                        dest='not_skip', action='append')
+    parser.add_argument('-o', '--thirdparty', dest='known_third_party', action='append',
+                        help='Force sortImports to recognize a module as being part of a third party library.')
+    parser.add_argument('-ot', '--order-by-type', dest='order_by_type',
+                        action='store_true', help='Order imports by type in addition to alphabetically')
+    parser.add_argument('-p', '--project', dest='known_first_party', action='append',
+                        help='Force sortImports to recognize a module as being part of the current python project.')
+    parser.add_argument('-q', '--quiet', action='store_true', dest="quiet",
+                        help='Shows extra quiet output, only errors are outputted.')
+    parser.add_argument('-r', dest='ambiguous_r_flag', action='store_true')
+    parser.add_argument('-rm', '--remove-import', dest='remove_imports', action='append',
+                        help='Removes the specified import from all files.')
+    parser.add_argument('-rr', '--reverse-relative', dest='reverse_relative', action='store_true',
+                        help='Reverse order of relative imports.')
+    parser.add_argument('-rc', '--recursive', dest='recursive', action='store_true',
+                        help='Recursively look for Python files of which to sort imports')
+    parser.add_argument('-s', '--skip', help='Files that sort imports should skip over. If you want to skip multiple '
+                        'files you should specify twice: --skip file1 --skip file2.', dest='skip', action='append')
+    parser.add_argument('-sd', '--section-default', dest='default_section',
+                        help='Sets the default section for imports (by default FIRSTPARTY) options: ' +
+                        str(DEFAULT_SECTIONS))
+    parser.add_argument('-sg', '--skip-glob', help='Files that sort imports should skip over.', dest='skip_glob',
+                        action='append')
+    inline_args_group.add_argument('-sl', '--force-single-line-imports', dest='force_single_line', action='store_true',
+                        help='Forces all from imports to appear on their own line')
+    parser.add_argument('-sp', '--settings-path', dest="settings_path",
+                        help='Explicitly set the settings path instead of auto determining based on file location.')
+    parser.add_argument('-t', '--top', help='Force specific imports to the top of their appropriate section.',
+                        dest='force_to_top', action='append')
+    parser.add_argument('-tc', '--trailing-comma', dest='include_trailing_comma', action='store_true',
+                        help='Includes a trailing comma on multi line imports that include parentheses.')
+    parser.add_argument('-up', '--use-parentheses', dest='use_parentheses', action='store_true',
+                        help='Use parenthesis for line continuation on length limit instead of slashes.')
+    parser.add_argument('-v', '--version', action='store_true', dest='show_version')
+    parser.add_argument('-vb', '--verbose', action='store_true', dest="verbose",
+                        help='Shows verbose output, such as when files are skipped or when a check is successful.')
+    parser.add_argument('--virtual-env', dest='virtual_env',
+                        help='Virtual environment to use for determining whether a package is third-party')
+    parser.add_argument('--conda-env', dest='conda_env',
+                        help='Conda environment to use for determining whether a package is third-party')
+    parser.add_argument('-vn', '--version-number', action='version', version=__version__,
+                        help='Returns just the current version number without the logo')
+    parser.add_argument('-w', '--line-width', help='The max length of an import line (used for wrapping long imports).',
+                        dest='line_length', type=int)
+    parser.add_argument('-wl', '--wrap-length', dest='wrap_length',
+                        help="Specifies how long lines that are wrapped should be, if not set line_length is used.")
+    parser.add_argument('-ws', '--ignore-whitespace', action='store_true', dest="ignore_whitespace",
+                        help='Tells isort to ignore whitespace differences when --check-only is being used.')
+    parser.add_argument('-y', '--apply', dest='apply', action='store_true',
+                        help='Tells isort to apply changes recursively without asking')
+    parser.add_argument('--unsafe', dest='unsafe', action='store_true',
+                        help='Tells isort to look for files in standard library directories, etc. '
+                             'where it may not be safe to operate in')
+    parser.add_argument('--case-sensitive', dest='case_sensitive', action='store_true',
+                        help='Tells isort to include casing when sorting module names')
+    parser.add_argument('--filter-files', dest='filter_files', action='store_true',
+                        help='Tells isort to filter files even when they are explicitly passed in as part of the command')
+    parser.add_argument('files', nargs='*', help='One or more Python source files that need their imports sorted.')
+
+    arguments = {key: value for key, value in vars(parser.parse_args(argv)).items() if value}
+    if 'dont_order_by_type' in arguments:
+        arguments['order_by_type'] = False
+    if arguments.pop('unsafe', False):
+        arguments['safety_excludes'] = False
+    return arguments
+
+
+def main(argv=None):
+    arguments = parse_args(argv)
+    if arguments.get('show_version'):
+        print(INTRO)
+        return
+
+    if arguments.get('ambiguous_r_flag'):
+        print('ERROR: Deprecated -r flag set. This flag has been replaced with -rm to remove ambiguity between it and '
+              '-rc for recursive')
+        sys.exit(1)
+
+    arguments['check_skip'] = False
+    if 'settings_path' in arguments:
+        sp = arguments['settings_path']
+        arguments['settings_path'] = os.path.abspath(sp) if os.path.isdir(sp) else os.path.dirname(os.path.abspath(sp))
+        if not os.path.isdir(arguments['settings_path']):
+            print("WARNING: settings_path dir does not exist: {0}".format(arguments['settings_path']))
+
+    if 'virtual_env' in arguments:
+        venv = arguments['virtual_env']
+        arguments['virtual_env'] = os.path.abspath(venv)
+        if not os.path.isdir(arguments['virtual_env']):
+            print("WARNING: virtual_env dir does not exist: {0}".format(arguments['virtual_env']))
+
+    file_names = arguments.pop('files', [])
+    if file_names == ['-']:
+        try:
+            # python 3
+            file_ = sys.stdin.buffer
+        except AttributeError:
+            # python 2
+            file_ = sys.stdin
+        SortImports(file_=file_, write_to_stdout=True, **arguments)
+    else:
+        if not file_names:
+            file_names = ['.']
+            arguments['recursive'] = True
+            if not arguments.get('apply', False):
+                arguments['ask_to_apply'] = True
+
+        config = from_path(arguments.get('settings_path', '') or os.path.abspath(file_names[0]) or os.getcwd()).copy()
+        config.update(arguments)
+        wrong_sorted_files = False
+        skipped = []
+
+        if config.get('filter_files'):
+            filtered_files = []
+            for file_name in file_names:
+                if should_skip(file_name, config):
+                    skipped.append(file_name)
+                else:
+                    filtered_files.append(file_name)
+            file_names = filtered_files
+
+        if arguments.get('recursive', False):
+            file_names = iter_source_code(file_names, config, skipped)
+        num_skipped = 0
+        if config['verbose'] or config.get('show_logo', False):
+            print(INTRO)
+
+        jobs = arguments.get('jobs')
+        if jobs:
+            import multiprocessing
+            executor = multiprocessing.Pool(jobs)
+            attempt_iterator = executor.imap(functools.partial(sort_imports, **arguments), file_names)
+        else:
+            attempt_iterator = (sort_imports(file_name, **arguments) for file_name in file_names)
+
+        for sort_attempt in attempt_iterator:
+            if not sort_attempt:
+                continue
+            incorrectly_sorted = sort_attempt.incorrectly_sorted
+            if arguments.get('check', False) and incorrectly_sorted:
+                wrong_sorted_files = True
+            if sort_attempt.skipped:
+                num_skipped += 1
+
+        if wrong_sorted_files:
+            sys.exit(1)
+
+        num_skipped += len(skipped)
+        if num_skipped and not arguments.get('quiet', False):
+            if config['verbose']:
+                for was_skipped in skipped:
+                    print("WARNING: {0} was skipped as it's listed in 'skip' setting"
+                        " or matches a glob in 'skip_glob' setting".format(was_skipped))
+            print("Skipped {0} files".format(num_skipped))
+
+
+if __name__ == "__main__":
+    main()

venv/lib/python3.6/site-packages/isort/natural.py

@@ -0,0 +1,47 @@
+"""isort/natural.py.
+
+Enables sorting strings that contain numbers naturally
+
+usage:
+    natural.nsorted(list)
+
+Copyright (C) 2013  Timothy Edmund Crosley
+
+Implementation originally from @HappyLeapSecond stack overflow user in response to:
+   https://stackoverflow.com/questions/5967500/how-to-correctly-sort-a-string-with-a-number-inside
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
+to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or
+substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+"""
+import re
+
+
+def _atoi(text):
+    return int(text) if text.isdigit() else text
+
+
+def _natural_keys(text):
+    return [_atoi(c) for c in re.split(r'(\d+)', text)]
+
+
+def nsorted(to_sort, key=None):
+    """Returns a naturally sorted list"""
+    if key is None:
+        key_callback = _natural_keys
+    else:
+        def key_callback(item):
+            return _natural_keys(key(item))
+
+    return sorted(to_sort, key=key_callback)

venv/lib/python3.6/site-packages/isort/pie_slice.py

@@ -0,0 +1,154 @@
+"""pie_slice/overrides.py.
+
+Overrides Python syntax to conform to the Python3 version as much as possible using a '*' import
+
+Copyright (C) 2013  Timothy Edmund Crosley
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
+to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or
+substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+"""
+from __future__ import absolute_import
+
+import collections
+import sys
+
+__version__ = "1.1.0"
+
+PY2 = sys.version_info[0] == 2
+PY3 = sys.version_info[0] == 3
+VERSION = sys.version_info
+
+__all__ = ['PY2', 'PY3', 'lru_cache', 'apply_changes_to_python_environment']
+
+
+if PY3:
+    input = input
+
+    def apply_changes_to_python_environment():
+        pass
+else:
+    input = raw_input  # noqa: F821
+
+    python_environment_changes_applied = False
+
+    import sys
+    stdout = sys.stdout
+    stderr = sys.stderr
+
+    def apply_changes_to_python_environment():
+        global python_environment_changes_applied
+        if python_environment_changes_applied or sys.getdefaultencoding() == 'utf-8':
+            python_environment_changes_applied = True
+            return
+
+        try:
+            reload(sys)
+            sys.stdout = stdout
+            sys.stderr = stderr
+            sys.setdefaultencoding('utf-8')
+        except NameError:  # Python 3
+            sys.exit('This should not happen!')
+
+        python_environment_changes_applied = True
+
+
+if sys.version_info < (3, 2):
+    try:
+        from threading import Lock
+    except ImportError:
+        from dummy_threading import Lock
+
+    from functools import wraps
+
+    _CacheInfo = collections.namedtuple("CacheInfo", "hits misses maxsize currsize")
+
+    def lru_cache(maxsize=100):
+        """Least-recently-used cache decorator.
+        Taking from: https://github.com/MiCHiLU/python-functools32/blob/master/functools32/functools32.py
+        with slight modifications.
+        If *maxsize* is set to None, the LRU features are disabled and the cache
+        can grow without bound.
+        Arguments to the cached function must be hashable.
+        View the cache statistics named tuple (hits, misses, maxsize, currsize) with
+        f.cache_info().  Clear the cache and statistics with f.cache_clear().
+        Access the underlying function with f.__wrapped__.
+        See: https://en.wikipedia.org/wiki/Cache_algorithms#Least_Recently_Used
+
+        """
+        def decorating_function(user_function, tuple=tuple, sorted=sorted, len=len, KeyError=KeyError):
+            hits, misses = [0], [0]
+            kwd_mark = (object(),)          # separates positional and keyword args
+            lock = Lock()
+
+            if maxsize is None:
+                CACHE = {}
+
+                @wraps(user_function)
+                def wrapper(*args, **kwds):
+                    key = args
+                    if kwds:
+                        key += kwd_mark + tuple(sorted(kwds.items()))
+                    try:
+                        result = CACHE[key]
+                        hits[0] += 1
+                        return result
+                    except KeyError:
+                        pass
+                    result = user_function(*args, **kwds)
+                    CACHE[key] = result
+                    misses[0] += 1
+                    return result
+            else:
+                CACHE = collections.OrderedDict()
+
+                @wraps(user_function)
+                def wrapper(*args, **kwds):
+                    key = args
+                    if kwds:
+                        key += kwd_mark + tuple(sorted(kwds.items()))
+                    with lock:
+                        cached = CACHE.get(key, None)
+                        if cached:
+                            del CACHE[key]
+                            CACHE[key] = cached
+                            hits[0] += 1
+                            return cached
+                    result = user_function(*args, **kwds)
+                    with lock:
+                        CACHE[key] = result     # record recent use of this key
+                        misses[0] += 1
+                        while len(CACHE) > maxsize:
+                            CACHE.popitem(last=False)
+                    return result
+
+            def cache_info():
+                """Report CACHE statistics."""
+                with lock:
+                    return _CacheInfo(hits[0], misses[0], maxsize, len(CACHE))
+
+            def cache_clear():
+                """Clear the CACHE and CACHE statistics."""
+                with lock:
+                    CACHE.clear()
+                    hits[0] = misses[0] = 0
+
+            wrapper.cache_info = cache_info
+            wrapper.cache_clear = cache_clear
+            return wrapper
+
+        return decorating_function
+
+else:
+    from functools import lru_cache

venv/lib/python3.6/site-packages/isort/pylama_isort.py

@@ -0,0 +1,29 @@
+import os
+import sys
+
+from pylama.lint import Linter as BaseLinter
+
+from .isort import SortImports
+
+
+class Linter(BaseLinter):
+
+    def allow(self, path):
+        """Determine if this path should be linted."""
+        return path.endswith('.py')
+
+    def run(self, path, **meta):
+        """Lint the file. Return an array of error dicts if appropriate."""
+        with open(os.devnull, 'w') as devnull:
+            # Suppress isort messages
+            sys.stdout = devnull
+
+            if SortImports(path, check=True).incorrectly_sorted:
+                return [{
+                    'lnum': 0,
+                    'col': 0,
+                    'text': 'Incorrectly sorted imports.',
+                    'type': 'ISORT'
+                }]
+            else:
+                return []

venv/lib/python3.6/site-packages/isort/settings.py

@@ -0,0 +1,356 @@
+"""isort/settings.py.
+
+Defines how the default settings for isort should be loaded
+
+(First from the default setting dictionary at the top of the file, then overridden by any settings
+ in ~/.isort.cfg or $XDG_CONFIG_HOME/isort.cfg if there are any)
+
+Copyright (C) 2013  Timothy Edmund Crosley
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
+to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or
+substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+"""
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+import fnmatch
+import io
+import os
+import posixpath
+import re
+import sys
+import warnings
+from collections import namedtuple
+from distutils.util import strtobool
+
+from .pie_slice import lru_cache
+from .utils import difference, union
+
+try:
+    import configparser
+except ImportError:
+    import ConfigParser as configparser
+
+try:
+    import toml
+except ImportError:
+    toml = False
+
+try:
+    import appdirs
+    if appdirs.system == 'darwin':
+        appdirs.system = 'linux2'
+except ImportError:
+    appdirs = None
+
+MAX_CONFIG_SEARCH_DEPTH = 25  # The number of parent directories isort will look for a config file within
+DEFAULT_SECTIONS = ('FUTURE', 'STDLIB', 'THIRDPARTY', 'FIRSTPARTY', 'LOCALFOLDER')
+
+safety_exclude_re = re.compile(
+    r"/(\.eggs|\.git|\.hg|\.mypy_cache|\.nox|\.tox|\.venv|_build|buck-out|build|dist|\.pants\.d"
+    r"|lib/python[0-9].[0-9]+)/"
+)
+
+WrapModes = ('GRID', 'VERTICAL', 'HANGING_INDENT', 'VERTICAL_HANGING_INDENT', 'VERTICAL_GRID', 'VERTICAL_GRID_GROUPED',
+             'VERTICAL_GRID_GROUPED_NO_COMMA', 'NOQA')
+WrapModes = namedtuple('WrapModes', WrapModes)(*range(len(WrapModes)))
+
+# Note that none of these lists must be complete as they are simply fallbacks for when included auto-detection fails.
+default = {'force_to_top': [],
+           'skip': [],
+           'skip_glob': [],
+           'line_length': 79,
+           'wrap_length': 0,
+           'line_ending': None,
+           'sections': DEFAULT_SECTIONS,
+           'no_sections': False,
+           'known_future_library': ['__future__'],
+           'known_standard_library': ['AL', 'BaseHTTPServer', 'Bastion', 'CGIHTTPServer', 'Carbon', 'ColorPicker',
+                                      'ConfigParser', 'Cookie', 'DEVICE', 'DocXMLRPCServer', 'EasyDialogs', 'FL',
+                                      'FrameWork', 'GL', 'HTMLParser', 'MacOS', 'MimeWriter', 'MiniAEFrame', 'Nav',
+                                      'PixMapWrapper', 'Queue', 'SUNAUDIODEV', 'ScrolledText', 'SimpleHTTPServer',
+                                      'SimpleXMLRPCServer', 'SocketServer', 'StringIO', 'Tix', 'Tkinter', 'UserDict',
+                                      'UserList', 'UserString', 'W', '__builtin__', 'abc', 'aepack', 'aetools',
+                                      'aetypes', 'aifc', 'al', 'anydbm', 'applesingle', 'argparse', 'array', 'ast',
+                                      'asynchat', 'asyncio', 'asyncore', 'atexit', 'audioop', 'autoGIL', 'base64',
+                                      'bdb', 'binascii', 'binhex', 'bisect', 'bsddb', 'buildtools', 'builtins',
+                                      'bz2', 'cPickle', 'cProfile', 'cStringIO', 'calendar', 'cd', 'cfmfile', 'cgi',
+                                      'cgitb', 'chunk', 'cmath', 'cmd', 'code', 'codecs', 'codeop', 'collections',
+                                      'colorsys', 'commands', 'compileall', 'compiler', 'concurrent', 'configparser',
+                                      'contextlib', 'contextvars', 'cookielib', 'copy', 'copy_reg', 'copyreg', 'crypt', 'csv',
+                                      'ctypes', 'curses', 'dataclasses', 'datetime', 'dbhash', 'dbm', 'decimal', 'difflib',
+                                      'dircache', 'dis', 'distutils', 'dl', 'doctest', 'dumbdbm', 'dummy_thread',
+                                      'dummy_threading', 'email', 'encodings', 'ensurepip', 'enum', 'errno',
+                                      'exceptions', 'faulthandler', 'fcntl', 'filecmp', 'fileinput', 'findertools',
+                                      'fl', 'flp', 'fm', 'fnmatch', 'formatter', 'fpectl', 'fpformat', 'fractions',
+                                      'ftplib', 'functools', 'future_builtins', 'gc', 'gdbm', 'gensuitemodule',
+                                      'getopt', 'getpass', 'gettext', 'gl', 'glob', 'grp', 'gzip', 'hashlib',
+                                      'heapq', 'hmac', 'hotshot', 'html', 'htmlentitydefs', 'htmllib', 'http',
+                                      'httplib', 'ic', 'icopen', 'imageop', 'imaplib', 'imgfile', 'imghdr', 'imp',
+                                      'importlib', 'imputil', 'inspect', 'io', 'ipaddress', 'itertools', 'jpeg',
+                                      'json', 'keyword', 'lib2to3', 'linecache', 'locale', 'logging', 'lzma',
+                                      'macerrors', 'macostools', 'macpath', 'macresource', 'mailbox', 'mailcap',
+                                      'marshal', 'math', 'md5', 'mhlib', 'mimetools', 'mimetypes', 'mimify', 'mmap',
+                                      'modulefinder', 'msilib', 'msvcrt', 'multifile', 'multiprocessing', 'mutex',
+                                      'netrc', 'new', 'nis', 'nntplib', 'numbers', 'operator', 'optparse', 'os',
+                                      'ossaudiodev', 'parser', 'pathlib', 'pdb', 'pickle', 'pickletools', 'pipes',
+                                      'pkgutil', 'platform', 'plistlib', 'popen2', 'poplib', 'posix', 'posixfile',
+                                      'pprint', 'profile', 'pstats', 'pty', 'pwd', 'py_compile', 'pyclbr', 'pydoc',
+                                      'queue', 'quopri', 'random', 're', 'readline', 'reprlib', 'resource', 'rexec',
+                                      'rfc822', 'rlcompleter', 'robotparser', 'runpy', 'sched', 'secrets', 'select',
+                                      'selectors', 'sets', 'sgmllib', 'sha', 'shelve', 'shlex', 'shutil', 'signal',
+                                      'site', 'sitecustomize', 'smtpd', 'smtplib', 'sndhdr', 'socket', 'socketserver',
+                                      'spwd', 'sqlite3', 'ssl', 'stat', 'statistics', 'statvfs', 'string', 'stringprep',
+                                      'struct', 'subprocess', 'sunau', 'sunaudiodev', 'symbol', 'symtable', 'sys',
+                                      'sysconfig', 'syslog', 'tabnanny', 'tarfile', 'telnetlib', 'tempfile', 'termios',
+                                      'test', 'textwrap', 'this', 'thread', 'threading', 'time', 'timeit', 'tkinter',
+                                      'token', 'tokenize', 'trace', 'traceback', 'tracemalloc', 'ttk', 'tty', 'turtle',
+                                      'turtledemo', 'types', 'typing', 'unicodedata', 'unittest', 'urllib', 'urllib2',
+                                      'urlparse', 'usercustomize', 'uu', 'uuid', 'venv', 'videoreader',
+                                      'warnings', 'wave', 'weakref', 'webbrowser', 'whichdb', 'winreg', 'winsound',
+                                      'wsgiref', 'xdrlib', 'xml', 'xmlrpc', 'xmlrpclib', 'zipapp', 'zipfile',
+                                      'zipimport', 'zlib'],
+           'known_third_party': ['google.appengine.api'],
+           'known_first_party': [],
+           'multi_line_output': WrapModes.GRID,
+           'forced_separate': [],
+           'indent': ' ' * 4,
+           'comment_prefix': '  #',
+           'length_sort': False,
+           'add_imports': [],
+           'remove_imports': [],
+           'reverse_relative': False,
+           'force_single_line': False,
+           'default_section': 'FIRSTPARTY',
+           'import_heading_future': '',
+           'import_heading_stdlib': '',
+           'import_heading_thirdparty': '',
+           'import_heading_firstparty': '',
+           'import_heading_localfolder': '',
+           'balanced_wrapping': False,
+           'use_parentheses': False,
+           'order_by_type': True,
+           'atomic': False,
+           'lines_after_imports': -1,
+           'lines_between_sections': 1,
+           'lines_between_types': 0,
+           'combine_as_imports': False,
+           'combine_star': False,
+           'keep_direct_and_as_imports': False,
+           'include_trailing_comma': False,
+           'from_first': False,
+           'verbose': False,
+           'quiet': False,
+           'force_adds': False,
+           'force_alphabetical_sort_within_sections': False,
+           'force_alphabetical_sort': False,
+           'force_grid_wrap': 0,
+           'force_sort_within_sections': False,
+           'show_diff': False,
+           'ignore_whitespace': False,
+           'no_lines_before': [],
+           'no_inline_sort': False,
+           'ignore_comments': False,
+           'safety_excludes': True,
+           'case_sensitive': False}
+
+
+@lru_cache()
+def from_path(path):
+    computed_settings = default.copy()
+    isort_defaults = ['~/.isort.cfg']
+    if appdirs:
+        isort_defaults = [appdirs.user_config_dir('isort.cfg')] + isort_defaults
+
+    _update_settings_with_config(path, '.editorconfig', ['~/.editorconfig'], ('*', '*.py', '**.py'), computed_settings)
+    _update_settings_with_config(path, 'pyproject.toml', [], ('tool.isort', ), computed_settings)
+    _update_settings_with_config(path, '.isort.cfg', isort_defaults, ('settings', 'isort'), computed_settings)
+    _update_settings_with_config(path, 'setup.cfg', [], ('isort', 'tool:isort'), computed_settings)
+    _update_settings_with_config(path, 'tox.ini', [], ('isort', 'tool:isort'), computed_settings)
+    return computed_settings
+
+
+def _update_settings_with_config(path, name, default, sections, computed_settings):
+    editor_config_file = None
+    for potential_settings_path in default:
+        expanded = os.path.expanduser(potential_settings_path)
+        if os.path.exists(expanded):
+            editor_config_file = expanded
+            break
+
+    tries = 0
+    current_directory = path
+    while current_directory and tries < MAX_CONFIG_SEARCH_DEPTH:
+        potential_path = os.path.join(current_directory, str(name))
+        if os.path.exists(potential_path):
+            editor_config_file = potential_path
+            break
+
+        new_directory = os.path.split(current_directory)[0]
+        if current_directory == new_directory:
+            break
+        current_directory = new_directory
+        tries += 1
+
+    if editor_config_file and os.path.exists(editor_config_file):
+        _update_with_config_file(editor_config_file, sections, computed_settings)
+
+
+def _update_with_config_file(file_path, sections, computed_settings):
+    cwd = os.path.dirname(file_path)
+    settings = _get_config_data(file_path, sections).copy()
+    if not settings:
+        return
+
+    if file_path.endswith('.editorconfig'):
+        indent_style = settings.pop('indent_style', '').strip()
+        indent_size = settings.pop('indent_size', '').strip()
+        if indent_size == "tab":
+            indent_size = settings.pop('tab_width', '').strip()
+
+        if indent_style == 'space':
+            computed_settings['indent'] = ' ' * (indent_size and int(indent_size) or 4)
+        elif indent_style == 'tab':
+            computed_settings['indent'] = '\t' * (indent_size and int(indent_size) or 1)
+
+        max_line_length = settings.pop('max_line_length', '').strip()
+        if max_line_length:
+            computed_settings['line_length'] = float('inf') if max_line_length == 'off' else int(max_line_length)
+
+    for key, value in settings.items():
+        access_key = key.replace('not_', '').lower()
+        existing_value_type = type(default.get(access_key, ''))
+        if existing_value_type in (list, tuple):
+            # sections has fixed order values; no adding or substraction from any set
+            if access_key == 'sections':
+                computed_settings[access_key] = tuple(_as_list(value))
+            else:
+                existing_data = set(computed_settings.get(access_key, default.get(access_key)))
+                if key.startswith('not_'):
+                    computed_settings[access_key] = difference(existing_data, _as_list(value))
+                elif key.startswith('known_'):
+                    computed_settings[access_key] = union(existing_data, _abspaths(cwd, _as_list(value)))
+                else:
+                    computed_settings[access_key] = union(existing_data, _as_list(value))
+        elif existing_value_type == bool:
+            # Only some configuration formats support native boolean values.
+            if not isinstance(value, bool):
+                value = bool(strtobool(value))
+            computed_settings[access_key] = value
+        elif key.startswith('known_'):
+            computed_settings[access_key] = list(_abspaths(cwd, _as_list(value)))
+        elif key == 'force_grid_wrap':
+            try:
+                result = existing_value_type(value)
+            except ValueError:
+                # backwards compat
+                result = default.get(access_key) if value.lower().strip() == 'false' else 2
+            computed_settings[access_key] = result
+        else:
+            computed_settings[access_key] = existing_value_type(value)
+
+
+def _as_list(value):
+    if not isinstance(value, list):
+        value = value.replace('\n', ',').split(',')
+
+    return filter(bool, [item.strip() for item in value])
+
+
+def _abspaths(cwd, values):
+    paths = [
+        os.path.join(cwd, value)
+        if not value.startswith(os.path.sep) and value.endswith(os.path.sep)
+        else value
+        for value in values
+    ]
+    return paths
+
+
+@lru_cache()
+def _get_config_data(file_path, sections):
+    settings = {}
+
+    with io.open(file_path) as config_file:
+        if file_path.endswith('.toml'):
+            if toml:
+                config = toml.load(config_file)
+                for section in sections:
+                    config_section = config
+                    for key in section.split('.'):
+                        config_section = config_section.get(key, {})
+                    settings.update(config_section)
+            else:
+                if '[tool.isort]' in config_file.read():
+                    warnings.warn("Found {} with [tool.isort] section, but toml package is not installed. "
+                                  "To configure isort with {}, install with 'isort[pyproject]'.".format(file_path,
+                                                                                                        file_path))
+        else:
+            if file_path.endswith('.editorconfig'):
+                line = '\n'
+                last_position = config_file.tell()
+                while line:
+                    line = config_file.readline()
+                    if '[' in line:
+                        config_file.seek(last_position)
+                        break
+                    last_position = config_file.tell()
+
+            if sys.version_info >= (3, 2):
+                config = configparser.ConfigParser(strict=False)
+                config.read_file(config_file)
+            else:
+                config = configparser.SafeConfigParser()
+                config.readfp(config_file)
+
+            for section in sections:
+                if config.has_section(section):
+                    settings.update(config.items(section))
+
+    return settings
+
+
+def should_skip(filename, config, path=''):
+    """Returns True if the file and/or folder should be skipped based on the passed in settings."""
+    os_path = os.path.join(path, filename)
+
+    normalized_path = os_path.replace('\\', '/')
+    if normalized_path[1:2] == ':':
+        normalized_path = normalized_path[2:]
+
+    if path and config['safety_excludes']:
+        check_exclude = '/' + filename.replace('\\', '/') + '/'
+        if path and os.path.basename(path) in ('lib', ):
+            check_exclude = '/' + os.path.basename(path) + check_exclude
+        if safety_exclude_re.search(check_exclude):
+            return True
+
+    for skip_path in config['skip']:
+        if posixpath.abspath(normalized_path) == posixpath.abspath(skip_path.replace('\\', '/')):
+            return True
+
+    position = os.path.split(filename)
+    while position[1]:
+        if position[1] in config['skip']:
+            return True
+        position = os.path.split(position[0])
+
+    for glob in config['skip_glob']:
+        if fnmatch.fnmatch(filename, glob) or fnmatch.fnmatch('/' + filename, glob):
+            return True
+
+    if not (os.path.isfile(os_path) or os.path.isdir(os_path) or os.path.islink(os_path)):
+        return True
+
+    return False

venv/lib/python3.6/site-packages/isort/utils.py

@@ -0,0 +1,53 @@
+import os
+import sys
+from contextlib import contextmanager
+
+
+def exists_case_sensitive(path):
+    """
+    Returns if the given path exists and also matches the case on Windows.
+
+    When finding files that can be imported, it is important for the cases to match because while
+    file os.path.exists("module.py") and os.path.exists("MODULE.py") both return True on Windows, Python
+    can only import using the case of the real file.
+    """
+    result = os.path.exists(path)
+    if (sys.platform.startswith('win') or sys.platform == 'darwin') and result:
+        directory, basename = os.path.split(path)
+        result = basename in os.listdir(directory)
+    return result
+
+
+@contextmanager
+def chdir(path):
+    """Context manager for changing dir and restoring previous workdir after exit.
+    """
+    curdir = os.getcwd()
+    os.chdir(path)
+    try:
+        yield
+    finally:
+        os.chdir(curdir)
+
+
+def union(a, b):
+    """ Return a list of items that are in `a` or `b`
+    """
+    u = []
+    for item in a:
+        if item not in u:
+            u.append(item)
+    for item in b:
+        if item not in u:
+            u.append(item)
+    return u
+
+
+def difference(a, b):
+    """ Return a list of items from `a` that are not in `b`.
+    """
+    d = []
+    for item in a:
+        if item not in b:
+            d.append(item)
+    return d