refactor: improve types and avoid nested loop, add types for untyped functions

commitizen/changelog.py

@@ -29,7 +29,7 @@
 
 import re
 from collections import OrderedDict, defaultdict
-from collections.abc import Generator, Iterable, Mapping
+from collections.abc import Generator, Iterable, Mapping, Sequence
 from dataclasses import dataclass
 from datetime import date
 from typing import TYPE_CHECKING, Any
@@ -63,7 +63,7 @@ class Metadata:
     latest_version_position: int | None = None
     latest_version_tag: str | None = None
 
-    def __post_init__(self):
+    def __post_init__(self) -> None:
         if self.latest_version and not self.latest_version_tag:
             # Test syntactic sugar
             # latest version tag is optional if same as latest version
@@ -169,8 +169,8 @@ def process_commit_message(
     commit: GitCommit,
     changes: dict[str | None, list],
     change_type_map: dict[str, str] | None = None,
-):
-    message: dict = {
+) -> None:
+    message: dict[str, Any] = {
         "sha1": commit.rev,
         "parents": commit.parents,
         "author": commit.author,
@@ -225,7 +225,7 @@ def render_changelog(
     tree: Iterable,
     loader: BaseLoader,
     template: str,
-    **kwargs,
+    **kwargs: Any,
 ) -> str:
     jinja_template = get_changelog_template(loader, template)
     changelog: str = jinja_template.render(tree=tree, **kwargs)
@@ -282,7 +282,7 @@ def incremental_build(
 
 
 def get_smart_tag_range(
-    tags: list[GitTag], newest: str, oldest: str | None = None
+    tags: Sequence[GitTag], newest: str, oldest: str | None = None
 ) -> list[GitTag]:
     """Smart because it finds the N+1 tag.
 
@@ -308,10 +308,10 @@ def get_smart_tag_range(
 
 
 def get_oldest_and_newest_rev(
-    tags: list[GitTag],
+    tags: Sequence[GitTag],
     version: str,
     rules: TagRules,
-) -> tuple[str | None, str | None]:
+) -> tuple[str | None, str]:
     """Find the tags for the given version.
 
     `version` may come in different formats:

commitizen/changelog_formats/__init__.py

@@ -25,7 +25,7 @@ class ChangelogFormat(Protocol):
 
     config: BaseConfig
 
-    def __init__(self, config: BaseConfig):
+    def __init__(self, config: BaseConfig) -> None:
         self.config = config
 
     @property

commitizen/changelog_formats/base.py

@@ -20,7 +20,7 @@ class BaseFormat(ChangelogFormat, metaclass=ABCMeta):
     extension: ClassVar[str] = ""
     alternative_extensions: ClassVar[set[str]] = set()
 
-    def __init__(self, config: BaseConfig):
+    def __init__(self, config: BaseConfig) -> None:
         # Constructor needs to be redefined because `Protocol` prevent instantiation by default
         # See: https://bugs.python.org/issue44807
         self.config = config

commitizen/cli.py

@@ -3,12 +3,11 @@
 import argparse
 import logging
 import sys
-from collections.abc import Sequence
 from copy import deepcopy
 from functools import partial
 from pathlib import Path
 from types import TracebackType
-from typing import TYPE_CHECKING, Any, cast
+from typing import TYPE_CHECKING, cast
 
 import argcomplete
 from decli import cli
@@ -48,9 +47,9 @@ def __call__(
         self,
         parser: argparse.ArgumentParser,
         namespace: argparse.Namespace,
-        kwarg: str | Sequence[Any] | None,
+        kwarg: object,
         option_string: str | None = None,
-    ):
+    ) -> None:
         if not isinstance(kwarg, str):
             return
         if "=" not in kwarg:
@@ -550,8 +549,12 @@ def __call__(
 
 
 def commitizen_excepthook(
-    type, value, traceback, debug=False, no_raise: list[int] | None = None
-):
+    type: type[BaseException],
+    value: BaseException,
+    traceback: TracebackType | None,
+    debug: bool = False,
+    no_raise: list[int] | None = None,
+) -> None:
     traceback = traceback if isinstance(traceback, TracebackType) else None
     if not isinstance(value, CommitizenException):
         original_excepthook(type, value, traceback)
@@ -581,7 +584,7 @@ def parse_no_raise(comma_separated_no_raise: str) -> list[int]:
     represents the exit code found in exceptions.
     """
     no_raise_items: list[str] = comma_separated_no_raise.split(",")
-    no_raise_codes = []
+    no_raise_codes: list[int] = []
     for item in no_raise_items:
         if item.isdecimal():
             no_raise_codes.append(int(item))
@@ -621,7 +624,7 @@ class Args(argparse.Namespace):
         ]
 
 
-def main():
+def main() -> None:
     parser: argparse.ArgumentParser = cli(data)
     argcomplete.autocomplete(parser)
     # Show help if no arg provided
@@ -676,7 +679,7 @@ def main():
         )
         sys.excepthook = no_raise_debug_excepthook
 
-    args.func(conf, arguments)()
+    args.func(conf, arguments)()  # type: ignore
 
 
 if __name__ == "__main__":

commitizen/cmd.py

@@ -1,5 +1,8 @@
+from __future__ import annotations
+
 import os
 import subprocess
+from collections.abc import Mapping
 from typing import NamedTuple
 
 from charset_normalizer import from_bytes
@@ -28,7 +31,7 @@ def _try_decode(bytes_: bytes) -> str:
             raise CharacterSetDecodeError() from e
 
 
-def run(cmd: str, env=None) -> Command:
+def run(cmd: str, env: Mapping[str, str] | None = None) -> Command:
     if env is not None:
         env = {**os.environ, **env}
     process = subprocess.Popen(