Merge pull request #47 from tk0miya/do_mypy_in_ci

Do mypy check in CI

.github/workflows/test.yml

@@ -55,7 +55,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        env: [flake8]
+        env: [flake8, mypy]
 
     steps:
       - name: Checkout code

setup.cfg

@@ -19,3 +19,6 @@ release = check -r -s egg_info -Db ''
 ;show-source=true
 max-line-length=95
 
+[mypy]
+ignore_missing_imports = True
+strict_optional = False

sphinx_intl/pycompat.py

@@ -53,5 +53,5 @@ def execfile_(filepath: str, _globals: Any, open: Callable = open) -> None:
         warnings.warn('Support for evaluating Python 2 syntax is deprecated '
                       'and will be removed in sphinx-intl 4.0. '
                       'Convert %s to Python 3 syntax.',
-                      filepath)
+                      source=filepath)
     exec(code, _globals)

tox.ini

@@ -1,7 +1,8 @@
 [tox]
 envlist =
     py{35,36,37,38,39,310-dev},
-    flake8
+    flake8,
+    mypy
 
 [gh-actions]
 python =
@@ -25,6 +26,11 @@ usedevelop=True
 deps=flake8
 commands=flake8 sphinx_intl
 
+[testenv:mypy]
+usedevelop=True
+deps=mypy
+commands=mypy sphinx_intl
+
 [testenv:sdist]
 usedevelop=True
 deps=