Enable flake8-logging-format

.pre-commit-config.yaml

@@ -21,7 +21,8 @@ repos:
   hooks:
   - id: flake8
     additional_dependencies: [
-        'flake8-bugbear==20.1.4'
+        'flake8-bugbear==20.1.4',
+        'flake8-logging-format==0.6.0',
     ]
     exclude: tests/data
 

setup.cfg

@@ -23,7 +23,14 @@ exclude =
     .scratch,
     _vendor,
     data
+enable-extensions = G
+ignore =
+    G200, G202,
+    # pycodestyle checks ignored in the default configuration
+    E121, E123, E126, E133, E226, E241, E242, E704, W503, W504, W505,
 per-file-ignores =
+    # G: The plugin logging-format treats every .log and .error as logging.
+    noxfile.py: G
     # B011: Do not call assert False since python -O removes these calls
     tests/*: B011
     # TODO: Remove IOError from except (OSError, IOError) blocks in
@@ -33,6 +40,7 @@ per-file-ignores =
     src/pip/_internal/utils/filesystem.py: B014
     src/pip/_internal/network/cache.py: B014
     src/pip/_internal/utils/misc.py: B014
+
 [mypy]
 follow_imports = silent
 ignore_missing_imports = True

src/pip/_internal/cache.py

@@ -228,11 +228,9 @@ class SimpleWheelCache(Cache):
                 continue
             if canonicalize_name(wheel.name) != canonical_package_name:
                 logger.debug(
-                    "Ignoring cached wheel {} for {} as it "
-                    "does not match the expected distribution name {}.".format(
-                        wheel_name, link, package_name
-                    )
-                )
+                    "Ignoring cached wheel %s for %s as it "
+                    "does not match the expected distribution name %s.",
+                    wheel_name, link, package_name)
                 continue
             if not wheel.supported(supported_tags):
                 # Built for a different python/arch/etc

src/pip/_internal/cli/cmdoptions.py

@@ -831,11 +831,11 @@ def _handle_merge_hash(option, opt_str, value, parser):
     try:
         algo, digest = value.split(':', 1)
     except ValueError:
-        parser.error('Arguments to {} must be a hash name '
+        parser.error('Arguments to {} must be a hash name '  # noqa
                      'followed by a value, like --hash=sha256:'
                      'abcde...'.format(opt_str))
     if algo not in STRONG_HASHES:
-        parser.error('Allowed hash algorithms for {} are {}.'.format(
+        parser.error('Allowed hash algorithms for {} are {}.'.format(  # noqa
                      opt_str, ', '.join(STRONG_HASHES)))
     parser.values.hashes.setdefault(algo, []).append(digest)
 

src/pip/_internal/commands/cache.py

@@ -59,9 +59,8 @@ class CacheCommand(Command):
 
         # Determine action
         if not args or args[0] not in handlers:
-            logger.error("Need an action ({}) to perform.".format(
-                ", ".join(sorted(handlers)))
-            )
+            logger.error("Need an action (%s) to perform.",
+                         ", ".join(sorted(handlers)))
             return ERROR
 
         action = args[0]

src/pip/_internal/commands/configuration.py

@@ -105,9 +105,8 @@ class ConfigurationCommand(Command):
 
         # Determine action
         if not args or args[0] not in handlers:
-            logger.error("Need an action ({}) to perform.".format(
-                ", ".join(sorted(handlers)))
-            )
+            logger.error("Need an action (%s) to perform.",
+                         ", ".join(sorted(handlers)))
             return ERROR
 
         action = args[0]

src/pip/_internal/commands/debug.py

@@ -29,7 +29,7 @@ logger = logging.getLogger(__name__)
 
 def show_value(name, value):
     # type: (str, Optional[str]) -> None
-    logger.info('{}: {}'.format(name, value))
+    logger.info('%s: %s', name, value)
 
 
 def show_sys_implementation():
@@ -102,9 +102,9 @@ def get_vendor_version_from_module(module_name):
 
 def show_actual_vendor_versions(vendor_txt_versions):
     # type: (Dict[str, str]) -> None
-    # Logs the actual version and print extra info
-    # if there is a conflict or if the actual version could not be imported.
-
+    """Log the actual version and print extra info if there is
+    a conflict or if the actual version could not be imported.
+    """
     for module_name, expected_version in vendor_txt_versions.items():
         extra_message = ''
         actual_version = get_vendor_version_from_module(module_name)
@@ -115,14 +115,7 @@ def show_actual_vendor_versions(vendor_txt_versions):
         elif actual_version != expected_version:
             extra_message = ' (CONFLICT: vendor.txt suggests version should'\
                             ' be {})'.format(expected_version)
-
-        logger.info(
-            '{name}=={actual}{extra}'.format(
-                name=module_name,
-                actual=actual_version,
-                extra=extra_message
-            )
-        )
+        logger.info('%s==%s%s', module_name, actual_version, extra_message)
 
 
 def show_vendor_versions():

src/pip/_internal/commands/install.py

@@ -436,7 +436,7 @@ class InstallCommand(RequirementCommand):
             message = create_env_error_message(
                 error, show_traceback, options.use_user_site,
             )
-            logger.error(message, exc_info=show_traceback)
+            logger.error(message, exc_info=show_traceback)  # noqa
 
             return ERROR
 

src/pip/_internal/index/collector.py

@@ -529,9 +529,7 @@ def group_locations(locations, expand_dir=False):
                     urls.append(url)
                 else:
                     logger.warning(
-                        "Path '{0}' is ignored: "
-                        "it is a directory.".format(path),
-                    )
+                        "Path '%s' is ignored: it is a directory.", path)
             elif os.path.isfile(path):
                 sort_path(path)
             else:

src/pip/_internal/models/search_scope.py

@@ -95,8 +95,8 @@ class SearchScope(object):
                 # exceptions for malformed URLs
                 if not purl.scheme and not purl.netloc:
                     logger.warning(
-                        'The index url "{}" seems invalid, '
-                        'please provide a scheme.'.format(redacted_index_url))
+                        'The index url "%s" seems invalid, '
+                        'please provide a scheme.', redacted_index_url)
 
                 redacted_index_urls.append(redacted_index_url)
 

src/pip/_internal/operations/install/wheel.py

@@ -308,9 +308,7 @@ def get_csv_rows_for_installed(
     installed_rows = []  # type: List[InstalledCSVRow]
     for row in old_csv_rows:
         if len(row) > 3:
-            logger.warning(
-                'RECORD line has more than three elements: {}'.format(row)
-            )
+            logger.warning('RECORD line has more than three elements: %s', row)
         old_record_path = _parse_record_path(row[0])
         new_record_path = installed.pop(old_record_path, old_record_path)
         if new_record_path in changed:

src/pip/_internal/req/constructors.py

@@ -173,8 +173,8 @@ def deduce_helpful_msg(req):
                     " the packages specified within it."
                 ).format(req)
         except RequirementParseError:
-            logger.debug("Cannot parse '{}' as requirements \
-            file".format(req), exc_info=True)
+            logger.debug("Cannot parse '%s' as requirements file",
+                         req, exc_info=True)
     else:
         msg += " File '{}' does not exist.".format(req)
     return msg

src/pip/_internal/req/req_uninstall.py

@@ -612,9 +612,7 @@ class UninstallPthEntries(object):
         # If the file doesn't exist, log a warning and return
         if not os.path.isfile(self.file):
             logger.warning(
-                "Cannot remove entries from nonexistent file {}".format(
-                    self.file)
-            )
+                "Cannot remove entries from nonexistent file %s", self.file)
             return
         with open(self.file, 'rb') as fh:
             # windows uses '\r\n' with py3k, but uses '\n' with py2.x

src/pip/_internal/resolution/resolvelib/factory.py

@@ -377,13 +377,13 @@ class Factory(object):
         # satisfied. We just report that case.
         if len(e.causes) == 1:
             req, parent = e.causes[0]
+            if parent is None:
+                req_disp = str(req)
+            else:
+                req_disp = '{} (from {})'.format(req, parent.name)
             logger.critical(
-                "Could not find a version that satisfies " +
-                "the requirement " +
-                str(req) +
-                ("" if parent is None else " (from {})".format(
-                    parent.name
-                ))
+                "Could not find a version that satisfies the requirement %s",
+                req_disp,
             )
             return DistributionNotFound(
                 'No matching distribution found for {}'.format(req)

src/pip/_internal/utils/subprocess.py

@@ -241,10 +241,8 @@ def call_subprocess(
             ).format(proc.returncode, command_desc)
             raise InstallationError(exc_msg)
         elif on_returncode == 'warn':
-            subprocess_logger.warning(
-                'Command "{}" had error code {} in {}'.format(
-                    command_desc, proc.returncode, cwd)
-            )
+            subprocess_logger.warning('Command "%s" had error code %s in %s',
+                                      command_desc, proc.returncode, cwd)
         elif on_returncode == 'ignore':
             pass
         else:

src/pip/_internal/utils/temp_dir.py

@@ -183,9 +183,8 @@ class TempDirectory(object):
         # scripts, so we canonicalize the path by traversing potential
         # symlinks here.
         path = os.path.realpath(
-            tempfile.mkdtemp(prefix="pip-{}-".format(kind))
-        )
-        logger.debug("Created temporary directory: {}".format(path))
+            tempfile.mkdtemp(prefix="pip-{}-".format(kind)))
+        logger.debug("Created temporary directory: %s", path)
         return path
 
     def cleanup(self):
@@ -267,8 +266,7 @@ class AdjacentTempDirectory(TempDirectory):
         else:
             # Final fallback on the default behavior.
             path = os.path.realpath(
-                tempfile.mkdtemp(prefix="pip-{}-".format(kind))
-            )
+                tempfile.mkdtemp(prefix="pip-{}-".format(kind)))
 
-        logger.debug("Created temporary directory: {}".format(path))
+        logger.debug("Created temporary directory: %s", path)
         return path