Add basic typing to ``pylint/reporters`` (#5978)

2 files changed, 11 insertions, 12 deletions

diff --git a/pylint/reporters/multi_reporter.py b/pylint/reporters/multi_reporter.py
index 43822f05c..855ab3c33 100644
--- a/pylint/reporters/multi_reporter.py
+++ b/pylint/reporters/multi_reporter.py
@@ -3,7 +3,7 @@
 # Copyright (c) https://github.com/PyCQA/pylint/blob/main/CONTRIBUTORS.txt
 
 import os
-from typing import IO, TYPE_CHECKING, Any, AnyStr, Callable, List, Optional
+from typing import TYPE_CHECKING, Callable, List, Optional, TextIO
 
 from pylint.interfaces import IReporter
 from pylint.message import Message
@@ -11,11 +11,9 @@ from pylint.reporters.base_reporter import BaseReporter
 from pylint.utils import LinterStats
 
 if TYPE_CHECKING:
+    from pylint.lint import PyLinter
     from pylint.reporters.ureports.nodes import Section
 
-AnyFile = IO[AnyStr]
-PyLinter = Any
-
 
 class MultiReporter:
     """Reports messages and layouts in plain text."""
@@ -34,21 +32,21 @@ class MultiReporter:
         self,
         sub_reporters: List[BaseReporter],
         close_output_files: Callable[[], None],
-        output: Optional[AnyFile] = None,
+        output: Optional[TextIO] = None,
     ):
         self._sub_reporters = sub_reporters
         self.close_output_files = close_output_files
         self._path_strip_prefix = os.getcwd() + os.sep
-        self._linter: Optional[PyLinter] = None
+        self._linter: Optional["PyLinter"] = None
         self.out = output
         self.messages: List[Message] = []
 
     @property
-    def out(self):
+    def out(self) -> Optional[TextIO]:
         return self.__out
 
     @out.setter
-    def out(self, output: Optional[AnyFile] = None):
+    def out(self, output: Optional[TextIO] = None) -> None:
         """MultiReporter doesn't have its own output.
 
         This method is only provided for API parity with BaseReporter
@@ -66,11 +64,11 @@ class MultiReporter:
         return self._path_strip_prefix
 
     @property
-    def linter(self) -> Optional[PyLinter]:
+    def linter(self) -> Optional["PyLinter"]:
         return self._linter
 
     @linter.setter
-    def linter(self, value: PyLinter) -> None:
+    def linter(self, value: "PyLinter") -> None:
         self._linter = value
         for rep in self._sub_reporters:
             rep.linter = value
diff --git a/pylint/reporters/reports_handler_mix_in.py b/pylint/reporters/reports_handler_mix_in.py
index 890d58660..180513a78 100644
--- a/pylint/reporters/reports_handler_mix_in.py
+++ b/pylint/reporters/reports_handler_mix_in.py
@@ -22,7 +22,8 @@ if TYPE_CHECKING:
     from pylint.checkers import BaseChecker
     from pylint.lint.pylinter import PyLinter
 
-ReportsDict = DefaultDict["BaseChecker", List[Tuple[str, str, Callable]]]
+ReportsCallable = Callable[[Section, LinterStats, Optional[LinterStats]], None]
+ReportsDict = DefaultDict["BaseChecker", List[Tuple[str, str, ReportsCallable]]]
 
 
 class ReportsHandlerMixIn:
@@ -39,7 +40,7 @@ class ReportsHandlerMixIn:
         return list(self._reports)
 
     def register_report(
-        self, reportid: str, r_title: str, r_cb: Callable, checker: "BaseChecker"
+        self, reportid: str, r_title: str, r_cb: ReportsCallable, checker: "BaseChecker"
     ) -> None:
         """Register a report.