Fix bare 'except:' to placate errors in new flake8 version.

- fixes E722 errors from latest version of flake8
- requires us to not use 'bare except:' and catch BaseException instead

lib/spack/llnl/util/filesystem.py

@@ -130,7 +130,7 @@ def groupid_to_group(x):
         try:
             for line in fileinput.input(filename, inplace=True):
                 print(re.sub(regex, repl, line.rstrip('\n')))
-        except:
+        except BaseException:
             # clean up the original file on failure.
             shutil.move(backup_filename, filename)
             raise

lib/spack/llnl/util/tty/__init__.py

@@ -250,7 +250,7 @@ def ioctl_GWINSZ(fd):
         try:
             rc = struct.unpack('hh', fcntl.ioctl(
                 fd, termios.TIOCGWINSZ, '1234'))
-        except:
+        except BaseException:
             return
         return rc
     rc = ioctl_GWINSZ(0) or ioctl_GWINSZ(1) or ioctl_GWINSZ(2)
@@ -259,7 +259,7 @@ def ioctl_GWINSZ(fd):
             fd = os.open(os.ctermid(), os.O_RDONLY)
             rc = ioctl_GWINSZ(fd)
             os.close(fd)
-        except:
+        except BaseException:
             pass
     if not rc:
         rc = (os.environ.get('LINES', 25), os.environ.get('COLUMNS', 80))

lib/spack/llnl/util/tty/colify.py

@@ -167,7 +167,7 @@ def colify(elts, **options):
             r, c = env_size.split('x')
             console_rows, console_cols = int(r), int(c)
             tty = True
-        except:
+        except BaseException:
             pass
 
     # Use only one column if not a tty.

lib/spack/llnl/util/tty/log.py

@@ -166,7 +166,7 @@ def _file_descriptors_work(*streams):
         for stream in streams:
             stream.fileno()
         return True
-    except:
+    except BaseException:
         return False
 
 
@@ -310,7 +310,7 @@ def __enter__(self):
             # need to pass this b/c multiprocessing closes stdin in child.
             try:
                 input_stream = os.fdopen(os.dup(sys.stdin.fileno()))
-            except:
+            except BaseException:
                 input_stream = None  # just don't forward input if this fails
 
             self.process = multiprocessing.Process(
@@ -483,7 +483,7 @@ def _writer_daemon(self, stdin):
                             force_echo = True
                         if xoff in controls:
                             force_echo = False
-        except:
+        except BaseException:
             tty.error("Exception occurred in writer daemon!")
             traceback.print_exc()
 

lib/spack/spack/build_environment.py

@@ -567,7 +567,7 @@ def child_process(child_pipe, input_stream):
             tty.msg(e.message)
             child_pipe.send(None)
 
-        except:
+        except BaseException:
             # catch ANYTHING that goes wrong in the child process
             exc_type, exc, tb = sys.exc_info()
 

lib/spack/spack/cmd/create.py

@@ -34,7 +34,7 @@
 from llnl.util.filesystem import mkdirp
 from spack.repository import Repo
 from spack.spec import Spec
-from spack.util.executable import which
+from spack.util.executable import which, ProcessError
 from spack.util.naming import mod_to_class
 from spack.util.naming import simplify_name, valid_fully_qualified_module_name
 from spack.url import UndetectableNameError, UndetectableVersionError
@@ -471,14 +471,14 @@ def __call__(self, stage, url):
             try:
                 unzip  = which('unzip')
                 output = unzip('-lq', stage.archive_file, output=str)
-            except:
+            except ProcessError:
                 output = ''
         else:
             try:
                 tar    = which('tar')
                 output = tar('--exclude=*/*/*', '-tf',
                              stage.archive_file, output=str)
-            except:
+            except ProcessError:
                 output = ''
         lines = output.split('\n')
 

lib/spack/spack/cmd/install.py

@@ -286,7 +286,7 @@ def wrapper(self, *args, ** kwargs):
                     message='Unexpected exception thrown during install',
                     text=text
                 )
-            except:
+            except BaseException:
                 # Anything else is also an error
                 duration = time.time() - start_time
                 test_case.set_duration(duration)

lib/spack/spack/database.py

@@ -491,7 +491,7 @@ def _read_suppress_error():
 
                 self._check_ref_counts()
 
-            except:
+            except BaseException:
                 # If anything explodes, restore old data, skip write.
                 self._data = old_data
                 raise
@@ -544,7 +544,7 @@ def _write(self, type, value, traceback):
             with open(temp_file, 'w') as f:
                 self._write_to_file(f)
             os.rename(temp_file, self._index_path)
-        except:
+        except BaseException:
             # Clean up temp file if something goes wrong.
             if os.path.exists(temp_file):
                 os.remove(temp_file)

lib/spack/spack/fetch_strategy.py

@@ -970,7 +970,7 @@ def from_list_url(pkg):
             except KeyError:
                 tty.msg("Can not find version %s in url_list" %
                         pkg.version)
-        except:
+        except BaseException:
             tty.msg("Could not determine url from list_url.")
 
 

lib/spack/spack/main.py

@@ -410,8 +410,8 @@ def __call__(self, *argv, **kwargs):
         except SystemExit as e:
             self.returncode = e.code
 
-        except:
-            self.error = sys.exc_info()[1]
+        except BaseException as e:
+            self.error = e
             if fail_on_error:
                 raise
 

lib/spack/spack/test/llnl/util/lock.py

@@ -98,7 +98,7 @@
     comm = MPI.COMM_WORLD
     if comm.size > 1:
         mpi = True
-except:
+except ImportError:
     pass
 
 
@@ -234,7 +234,7 @@ def wait(self):
     if include:
         try:
             functions[subcomm.rank](subcomm_barrier())
-        except:
+        except BaseException:
             # aborting is the best we can do for MPI tests without
             # hanging, since we're using MPI barriers. This will fail
             # early and it loses the nice pytest output, but at least it

lib/spack/spack/util/module_cmd.py

@@ -82,13 +82,13 @@ def get_module_cmd_from_bash(bashopts=''):
     try:
         find_exec = re.search(r'.*`(.*(:? bash | sh ).*)`.*', module_func)
         exec_line = find_exec.group(1)
-    except:
+    except BaseException:
         try:
             # This will fail with nested parentheses. TODO: expand regex.
             find_exec = re.search(r'.*\(([^()]*(:? bash | sh )[^()]*)\).*',
                                   module_func)
             exec_line = find_exec.group(1)
-        except:
+        except BaseException:
             raise ModuleError('get_module_cmd cannot '
                               'determine the module command from bash')