address mypy strict findings

.pre-commit-config.yaml

@@ -2,7 +2,7 @@ ci:
   autoupdate_schedule: monthly
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.1.5
+    rev: v0.1.13
     hooks:
       - id: ruff
       - id: ruff-format

CHANGES.rst

@@ -8,6 +8,7 @@ Unreleased
 -   Session data is untagged without relying on the built-in ``json.loads``
     ``object_hook``. This allows other JSON providers that don't implement that.
     :issue:`5381`
+-   Address more type findings when using mypy strict mode. :pr:`5383`
 
 
 Version 3.0.0

pyproject.toml

@@ -82,21 +82,7 @@ python_version = "3.8"
 files = ["src/flask", "tests/typing"]
 show_error_codes = true
 pretty = true
-#strict = true
-allow_redefinition = true
-disallow_subclassing_any = true
-#disallow_untyped_calls = true
-#disallow_untyped_defs = true
-#disallow_incomplete_defs = true
-no_implicit_optional = true
-local_partial_types = true
-#no_implicit_reexport = true
-strict_equality = true
-warn_redundant_casts = true
-warn_unused_configs = true
-warn_unused_ignores = true
-#warn_return_any = true
-#warn_unreachable = true
+strict = true
 
 [[tool.mypy.overrides]]
 module = [

requirements/dev.txt

@@ -4,17 +4,19 @@
 #
 #    pip-compile dev.in
 #
-alabaster==0.7.13
+alabaster==0.7.16
     # via sphinx
 asgiref==3.7.2
-    # via -r tests.in
-babel==2.13.1
+    # via
+    #   -r tests.in
+    #   -r typing.in
+babel==2.14.0
     # via sphinx
 build==1.0.3
     # via pip-tools
 cachetools==5.3.2
     # via tox
-certifi==2023.7.22
+certifi==2023.11.17
     # via requests
 cffi==1.16.0
     # via cryptography
@@ -28,9 +30,9 @@ click==8.1.7
     # via pip-tools
 colorama==0.4.6
     # via tox
-cryptography==41.0.5
+cryptography==41.0.7
     # via -r typing.in
-distlib==0.3.7
+distlib==0.3.8
     # via virtualenv
 docutils==0.18.1
     # via
@@ -40,19 +42,19 @@ filelock==3.13.1
     # via
     #   tox
     #   virtualenv
-identify==2.5.31
+identify==2.5.33
     # via pre-commit
-idna==3.4
+idna==3.6
     # via requests
 imagesize==1.4.1
     # via sphinx
 iniconfig==2.0.0
     # via pytest
-jinja2==3.1.2
+jinja2==3.1.3
     # via sphinx
 markupsafe==2.1.3
     # via jinja2
-mypy==1.6.1
+mypy==1.8.0
     # via -r typing.in
 mypy-extensions==1.0.0
     # via mypy
@@ -70,30 +72,32 @@ pallets-sphinx-themes==2.1.1
     # via -r docs.in
 pip-tools==7.3.0
     # via -r dev.in
-platformdirs==3.11.0
+platformdirs==4.1.0
     # via
     #   tox
     #   virtualenv
 pluggy==1.3.0
     # via
     #   pytest
     #   tox
-pre-commit==3.5.0
+pre-commit==3.6.0
     # via -r dev.in
 pycparser==2.21
     # via cffi
-pygments==2.16.1
+pygments==2.17.2
     # via
     #   sphinx
     #   sphinx-tabs
 pyproject-api==1.6.1
     # via tox
 pyproject-hooks==1.0.0
     # via build
-pytest==7.4.3
+pytest==7.4.4
     # via -r tests.in
 python-dotenv==1.0.0
-    # via -r tests.in
+    # via
+    #   -r tests.in
+    #   -r typing.in
 pyyaml==6.0.1
     # via pre-commit
 requests==2.31.0
@@ -106,45 +110,40 @@ sphinx==7.2.6
     #   pallets-sphinx-themes
     #   sphinx-issues
     #   sphinx-tabs
-    #   sphinxcontrib-applehelp
-    #   sphinxcontrib-devhelp
-    #   sphinxcontrib-htmlhelp
     #   sphinxcontrib-log-cabinet
-    #   sphinxcontrib-qthelp
-    #   sphinxcontrib-serializinghtml
 sphinx-issues==3.0.1
     # via -r docs.in
 sphinx-tabs==3.4.4
     # via -r docs.in
-sphinxcontrib-applehelp==1.0.7
+sphinxcontrib-applehelp==1.0.8
     # via sphinx
-sphinxcontrib-devhelp==1.0.5
+sphinxcontrib-devhelp==1.0.6
     # via sphinx
-sphinxcontrib-htmlhelp==2.0.4
+sphinxcontrib-htmlhelp==2.0.5
     # via sphinx
 sphinxcontrib-jsmath==1.0.1
     # via sphinx
 sphinxcontrib-log-cabinet==1.0.1
     # via -r docs.in
-sphinxcontrib-qthelp==1.0.6
+sphinxcontrib-qthelp==1.0.7
     # via sphinx
-sphinxcontrib-serializinghtml==1.1.9
+sphinxcontrib-serializinghtml==1.1.10
     # via sphinx
-tox==4.11.3
+tox==4.12.0
     # via -r dev.in
 types-contextvars==2.4.7.3
     # via -r typing.in
 types-dataclasses==0.6.6
     # via -r typing.in
-typing-extensions==4.8.0
+typing-extensions==4.9.0
     # via mypy
-urllib3==2.0.7
+urllib3==2.1.0
     # via requests
-virtualenv==20.24.6
+virtualenv==20.25.0
     # via
     #   pre-commit
     #   tox
-wheel==0.41.3
+wheel==0.42.0
     # via pip-tools
 
 # The following packages are considered to be unsafe in a requirements file:

requirements/docs.txt

@@ -4,23 +4,23 @@
 #
 #    pip-compile docs.in
 #
-alabaster==0.7.13
+alabaster==0.7.16
     # via sphinx
-babel==2.13.1
+babel==2.14.0
     # via sphinx
-certifi==2023.7.22
+certifi==2023.11.17
     # via requests
 charset-normalizer==3.3.2
     # via requests
 docutils==0.18.1
     # via
     #   sphinx
     #   sphinx-tabs
-idna==3.4
+idna==3.6
     # via requests
 imagesize==1.4.1
     # via sphinx
-jinja2==3.1.2
+jinja2==3.1.3
     # via sphinx
 markupsafe==2.1.3
     # via jinja2
@@ -30,7 +30,7 @@ packaging==23.2
     #   sphinx
 pallets-sphinx-themes==2.1.1
     # via -r docs.in
-pygments==2.16.1
+pygments==2.17.2
     # via
     #   sphinx
     #   sphinx-tabs
@@ -44,29 +44,24 @@ sphinx==7.2.6
     #   pallets-sphinx-themes
     #   sphinx-issues
     #   sphinx-tabs
-    #   sphinxcontrib-applehelp
-    #   sphinxcontrib-devhelp
-    #   sphinxcontrib-htmlhelp
     #   sphinxcontrib-log-cabinet
-    #   sphinxcontrib-qthelp
-    #   sphinxcontrib-serializinghtml
 sphinx-issues==3.0.1
     # via -r docs.in
 sphinx-tabs==3.4.4
     # via -r docs.in
-sphinxcontrib-applehelp==1.0.7
+sphinxcontrib-applehelp==1.0.8
     # via sphinx
-sphinxcontrib-devhelp==1.0.5
+sphinxcontrib-devhelp==1.0.6
     # via sphinx
-sphinxcontrib-htmlhelp==2.0.4
+sphinxcontrib-htmlhelp==2.0.5
     # via sphinx
 sphinxcontrib-jsmath==1.0.1
     # via sphinx
 sphinxcontrib-log-cabinet==1.0.1
     # via -r docs.in
-sphinxcontrib-qthelp==1.0.6
+sphinxcontrib-qthelp==1.0.7
     # via sphinx
-sphinxcontrib-serializinghtml==1.1.9
+sphinxcontrib-serializinghtml==1.1.10
     # via sphinx
-urllib3==2.0.7
+urllib3==2.1.0
     # via requests

requirements/tests.txt

@@ -12,7 +12,7 @@ packaging==23.2
     # via pytest
 pluggy==1.3.0
     # via pytest
-pytest==7.4.3
+pytest==7.4.4
     # via -r tests.in
 python-dotenv==1.0.0
     # via -r tests.in

requirements/typing.in

@@ -1,4 +1,6 @@
 mypy
 types-contextvars
 types-dataclasses
+asgiref
 cryptography
+python-dotenv

requirements/typing.txt

@@ -4,19 +4,23 @@
 #
 #    pip-compile typing.in
 #
+asgiref==3.7.2
+    # via -r typing.in
 cffi==1.16.0
     # via cryptography
-cryptography==41.0.5
+cryptography==41.0.7
     # via -r typing.in
-mypy==1.6.1
+mypy==1.8.0
     # via -r typing.in
 mypy-extensions==1.0.0
     # via mypy
 pycparser==2.21
     # via cffi
+python-dotenv==1.0.0
+    # via -r typing.in
 types-contextvars==2.4.7.3
     # via -r typing.in
 types-dataclasses==0.6.6
     # via -r typing.in
-typing-extensions==4.8.0
+typing-extensions==4.9.0
     # via mypy