Update mypy 0.740 -> 0.750

Release notes:
https://mypy-lang.blogspot.com/2019/11/mypy-0.html

.pre-commit-config.yaml

@@ -38,7 +38,7 @@ repos:
     -   id: pyupgrade
         args: [--py3-plus]
 -   repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v0.740
+    rev: v0.750
     hooks:
     -   id: mypy
         files: ^(src/|testing/)

src/_pytest/_code/code.py

@@ -479,7 +479,7 @@ class ExceptionInfo(Generic[_E]):
         assert tup[1] is not None, "no current exception"
         assert tup[2] is not None, "no current exception"
         exc_info = (tup[0], tup[1], tup[2])
-        return cls.from_exc_info(exc_info, exprinfo)
+        return ExceptionInfo.from_exc_info(exc_info, exprinfo)
 
     @classmethod
     def for_later(cls) -> "ExceptionInfo[_E]":

src/_pytest/_code/source.py

@@ -339,7 +339,9 @@ def getstatementrange_ast(
         block_finder.started = source.lines[start][0].isspace()
         it = ((x + "\n") for x in source.lines[start:end])
         try:
-            for tok in tokenize.generate_tokens(lambda: next(it)):
+            # Type ignored until next mypy release.
+            # https://github.com/python/typeshed/commit/c0d46a20353b733befb85d8b9cc24e5b0bcd8f9a
+            for tok in tokenize.generate_tokens(lambda: next(it)):  # type: ignore
                 block_finder.tokeneater(*tok)
         except (inspect.EndOfBlock, IndentationError):
             end = block_finder.last + start

src/_pytest/assertion/rewrite.py

@@ -1074,14 +1074,13 @@ def try_makedirs(cache_dir) -> bool:
 
 def get_cache_dir(file_path: Path) -> Path:
     """Returns the cache directory to write .pyc files for the given .py file path"""
-    # Type ignored until added in next mypy release.
-    if sys.version_info >= (3, 8) and sys.pycache_prefix:  # type: ignore
+    if sys.version_info >= (3, 8) and sys.pycache_prefix:
         # given:
         #   prefix = '/tmp/pycs'
         #   path = '/home/user/proj/test_app.py'
         # we want:
         #   '/tmp/pycs/home/user/proj'
-        return Path(sys.pycache_prefix) / Path(*file_path.parts[1:-1])  # type: ignore
+        return Path(sys.pycache_prefix) / Path(*file_path.parts[1:-1])
     else:
         # classic pycache directory
         return file_path.parent / "__pycache__"

src/_pytest/compat.py

@@ -43,8 +43,7 @@ MODULE_NOT_FOUND_ERROR = (
 
 
 if sys.version_info >= (3, 8):
-    # Type ignored until next mypy release.
-    from importlib import metadata as importlib_metadata  # type: ignore
+    from importlib import metadata as importlib_metadata
 else:
     import importlib_metadata  # noqa: F401
 
@@ -385,9 +384,7 @@ else:
 
 
 if sys.version_info >= (3, 8):
-    # TODO: Remove type ignore on next mypy update.
-    # https://github.com/python/typeshed/commit/add0b5e930a1db16560fde45a3b710eefc625709
-    from functools import cached_property  # type: ignore
+    from functools import cached_property
 else:
 
     class cached_property(Generic[_S, _T]):

src/_pytest/recwarn.py

@@ -129,7 +129,9 @@ def warns(  # noqa: F811
             return func(*args[1:], **kwargs)
 
 
-class WarningsRecorder(warnings.catch_warnings):
+# Type ignored until next mypy release. Regression fixed by:
+# https://github.com/python/typeshed/commit/41bf6a19822d6694973449d795f8bfe1d50d5a03
+class WarningsRecorder(warnings.catch_warnings):  # type: ignore
     """A context manager to record raised warnings.
 
     Adapted from `warnings.catch_warnings`.