Merge pull request #747 from consideRatio/pr/pre-adding-pre-commit-fixes

Small fixes for flake8 and other smaller pre-commit tools

.flake8

@@ -0,0 +1,12 @@
+[flake8]
+# Ignore style and complexity
+# E: style errors
+# W: style warnings
+# C: complexity
+# F841: local variable assigned but never used
+ignore = E, C, W, F841
+builtins =
+    c
+    load_subconfig
+exclude =
+    build/

.github/integration-test.py

@@ -104,7 +104,7 @@ def run_test(image_name, test_name, bootstrap_pip_spec, test_files, upgrade, ins
     if upgrade:
         run_container_command(
             test_name,
-            f'curl -L https://tljh.jupyter.org/bootstrap.py | python3 -'
+            'curl -L https://tljh.jupyter.org/bootstrap.py | python3 -'
         )
 
     run_container_command(

.github/workflows/integration-test.yaml

@@ -24,7 +24,6 @@ on:
   workflow_dispatch:
 
 jobs:
-
   # This job is used as a workaround to a limitation when using a matrix of
   # variations that a job should be executed against. The limitation is that a
   # matrix once defined can't include any conditions.

bootstrap/bootstrap.py

@@ -211,7 +211,7 @@ def ensure_host_system_can_install_tljh():
 class ProgressPageRequestHandler(SimpleHTTPRequestHandler):
     def do_GET(self):
         if self.path == "/logs":
-            with open("/opt/tljh/installer.log", "r") as log_file:
+            with open("/opt/tljh/installer.log") as log_file:
                 logs = log_file.read()
 
             self.send_response(200)

docs/PULL_REQUEST_TEMPLATE.md

@@ -1,4 +1,4 @@
- - [ ] Add / update documentation
- - [ ] Add tests
+- [ ] Add / update documentation
+- [ ] Add tests
 
  <!-- Read more about our code-review guidelines at https://the-littlest-jupyterhub.readthedocs.io/en/latest/contributing/code-review.html -->

docs/howto/admin/enable-extensions.rst

@@ -56,5 +56,3 @@ Enabling extensions via the command line
 
    .. image:: ../../images/admin/enable-spellcheck.png
       :alt: spellcheck-interface-changes
-
-

docs/howto/providers/azure.rst

@@ -34,5 +34,3 @@ If you no longer need any of your resources you can delete the entire resource g
 * Go to "Reosurce groups" on the left hand panel
 * Click on your resource group
 * Click on "Delete resource group" you will then be asked to confirm the operation.  This operation will take between 5 and 10 minutes.
-
-

docs/install/custom-server.rst

@@ -97,4 +97,3 @@ Step 4: Setup HTTPS
 
 Once you are ready to run your server for real, and have a domain, it's a good
 idea to proceed directly to :ref:`howto/admin/https`.
-

docs/troubleshooting/restart.rst

@@ -27,5 +27,3 @@ This calls systemctl and restarts Traefik. The user may call systemctl and resta
 .. code-block:: console
 
      $ sudo tljh-config reload hub
-
-

integration-tests/test_admin_installer.py

@@ -2,7 +2,6 @@ from hubtraf.user import User
 from hubtraf.auth.dummy import login_dummy
 import pytest
 from functools import partial
-import asyncio
 
 
 @pytest.mark.asyncio

integration-tests/test_extensions.py

@@ -1,4 +1,3 @@
-import os
 import subprocess
 
 
@@ -39,7 +38,7 @@ def test_nbextensions():
     ]
 
     for e in extensions:
-        assert '{} \x1b[32m enabled \x1b[0m'.format(e) in proc.stdout.decode()
+        assert f'{e} \x1b[32m enabled \x1b[0m' in proc.stdout.decode()
 
     # Ensure we have 'OK' messages in our stdout, to make sure everything is importable
     assert proc.stderr.decode() == '      - Validating: \x1b[32mOK\x1b[0m\n' * len(extensions)

integration-tests/test_hub.py

@@ -8,7 +8,6 @@ from functools import partial
 import asyncio
 import pwd
 import grp
-import sys
 import subprocess
 from os import system
 from tljh.normalize import generate_system_username

integration-tests/test_proxy.py

@@ -12,7 +12,6 @@ import pytest
 from tljh.config import (
     reload_component,
     set_config_value,
-    unset_config_value,
     CONFIG_FILE,
     CONFIG_DIR,
     STATE_DIR,

integration-tests/test_simplest_plugin.py

@@ -84,7 +84,7 @@ def test_new_user_create():
     # Call ensure_user to make sure the user plugin gets called
     user.ensure_user(username)
 
-    with open(f"test_new_user_create") as f:
+    with open("test_new_user_create") as f:
         content = f.read()
 
     assert content == username

tests/test_conda.py

@@ -59,7 +59,7 @@ def test_ensure_pip_requirements(prefix):
     conda.ensure_conda_packages(prefix, ['pip'])
     with tempfile.NamedTemporaryFile() as f:
         # Sample small package to test
-        f.write('there'.encode())
+        f.write(b'there')
         f.flush()
         conda.ensure_pip_requirements(prefix, f.name)
     subprocess.check_call([

tests/test_configurer.py

@@ -2,7 +2,6 @@
 Test configurer
 """
 
-from traitlets import Dict
 from traitlets.config import Config
 import os
 import sys

tests/test_installer.py

@@ -31,7 +31,7 @@ def test_ensure_admins(tljh_dir, admins, expected_config):
 	installer.ensure_admins(admins)
 
 	config_path = installer.CONFIG_FILE
-	with open(config_path, 'r') as f:
+	with open(config_path) as f:
 	    config = yaml.load(f)
 
 	# verify the list was flattened

tests/test_traefik.py

@@ -1,6 +1,5 @@
 """Test traefik configuration"""
 import os
-from unittest import mock
 
 import toml
 import pytest

tljh/conda.py

@@ -72,7 +72,7 @@ def fix_permissions(prefix):
     Run after each install command.
     """
     utils.run_subprocess(
-        ["chown", "-R", "{}:{}".format(os.getuid(), os.getgid()), prefix]
+        ["chown", "-R", f"{os.getuid()}:{os.getgid()}", prefix]
     )
     utils.run_subprocess(["chmod", "-R", "o-w", prefix])
 

tljh/config.py

@@ -13,7 +13,6 @@ tljh-config show firstlevel.second_level
 """
 
 import argparse
-import asyncio
 from collections.abc import Sequence, Mapping
 from copy import deepcopy
 import os

tljh/configurer.py

@@ -121,7 +121,7 @@ def load_traefik_api_credentials():
     proxy_secret_path = os.path.join(STATE_DIR, 'traefik-api.secret')
     if not os.path.exists(proxy_secret_path):
         return {}
-    with open(proxy_secret_path, 'r') as f:
+    with open(proxy_secret_path) as f:
         password = f.read()
     return {
         'traefik_api': {

tljh/installer.py

@@ -16,7 +16,6 @@ import bcrypt
 import pluggy
 import requests
 from requests.packages.urllib3.exceptions import InsecureRequestWarning
-from getpass import getpass
 
 from tljh import (
     apt,
@@ -26,7 +25,6 @@ from tljh import (
     systemd,
     traefik,
     user,
-    utils
 )
 from .config import (
     CONFIG_DIR,
@@ -227,7 +225,7 @@ def ensure_admins(admin_password_list):
     logger.info("Setting up admin users")
     config_path = CONFIG_FILE
     if os.path.exists(config_path):
-        with open(config_path, 'r') as f:
+        with open(config_path) as f:
             config = yaml.load(f)
     else:
         config = {}
@@ -263,7 +261,7 @@ def ensure_jupyterhub_running(times=20):
 
     for i in range(times):
         try:
-            logger.info('Waiting for JupyterHub to come up ({}/{} tries)'.format(i + 1, times))
+            logger.info(f'Waiting for JupyterHub to come up ({i + 1}/{times} tries)')
             # Because we don't care at this level that SSL is valid, we can suppress
             # InsecureRequestWarning for this request.
             with warnings.catch_warnings():
@@ -285,7 +283,7 @@ def ensure_jupyterhub_running(times=20):
             # Everything else should immediately abort
             raise
 
-    raise Exception("Installation failed: JupyterHub did not start in {}s".format(times))
+    raise Exception(f"Installation failed: JupyterHub did not start in {times}s")
 
 
 def ensure_symlinks(prefix):
@@ -390,7 +388,7 @@ def ensure_config_yaml(plugin_manager):
     migrator.migrate_config_files()
 
     if os.path.exists(CONFIG_FILE):
-        with open(CONFIG_FILE, 'r') as f:
+        with open(CONFIG_FILE) as f:
             config = yaml.load(f)
     else:
         config = {}

tljh/jupyterhub_config.py

@@ -5,7 +5,6 @@ JupyterHub config for the littlest jupyterhub.
 from glob import glob
 import os
 
-from systemdspawner import SystemdSpawner
 from tljh import configurer
 from tljh.config import INSTALL_PREFIX, USER_ENV_PREFIX, CONFIG_DIR
 from tljh.utils import get_plugin_manager

tljh/traefik.py

@@ -69,7 +69,7 @@ def ensure_traefik_binary(prefix):
     # verify that we got what we expected
     checksum = checksum_file(traefik_bin)
     if checksum != checksums[plat]:
-        raise IOError(f"Checksum failed {traefik_bin}: {checksum} != {checksums[plat]}")
+        raise OSError(f"Checksum failed {traefik_bin}: {checksum} != {checksums[plat]}")
 
 
 def compute_basic_auth(username, password):

tljh/user.py

@@ -34,7 +34,7 @@ def ensure_user(username):
     subprocess.check_call([
         'chmod',
         'o-rwx',
-        expanduser('~{username}'.format(username=username))
+        expanduser(f'~{username}')
     ])
 
     pm = get_plugin_manager()