chore: update pre-commit hooks

.pre-commit-config.yaml

@@ -15,7 +15,7 @@
 repos:
 # Standard hooks
 - repo: https://github.com/pre-commit/pre-commit-hooks
-  rev: v3.4.0
+  rev: v4.0.1
   hooks:
   - id: check-added-large-files
   - id: check-case-conflict
@@ -32,7 +32,7 @@ repos:
 
 # Black, the code formatter, natively supports pre-commit
 - repo: https://github.com/psf/black
-  rev: 20.8b1
+  rev: 21.6b0
   hooks:
   - id: black
     # By default, this ignores pyi files, though black supports them
@@ -41,13 +41,13 @@ repos:
 
 # Changes tabs to spaces
 - repo: https://github.com/Lucas-C/pre-commit-hooks
-  rev: v1.1.9
+  rev: v1.1.10
   hooks:
   - id: remove-tabs
 
 # Flake8 also supports pre-commit natively (same author)
 - repo: https://gitlab.com/pycqa/flake8
-  rev: 3.8.4
+  rev: 3.9.2
   hooks:
   - id: flake8
     additional_dependencies: [flake8-bugbear, pep8-naming]
@@ -64,7 +64,7 @@ repos:
 
 # Check static types with mypy
 - repo: https://github.com/pre-commit/mirrors-mypy
-  rev: v0.800
+  rev: v0.910
   hooks:
   - id: mypy
     # The default Python type ignores .pyi files, so let's rerun if detected
@@ -72,6 +72,7 @@ repos:
     files: ^pybind11.*\.pyi?$
     # Running per-file misbehaves a bit, so just run on all files, it's fast
     pass_filenames: false
+    additional_dependencies: [typed_ast]
 
 # Checks the manifest for missing files (native support)
 - repo: https://github.com/mgedmin/check-manifest

tests/test_class.py

@@ -321,7 +321,7 @@ def test_bind_protected_functions():
 
 
 def test_brace_initialization():
-    """ Tests that simple POD classes can be constructed using C++11 brace initialization """
+    """Tests that simple POD classes can be constructed using C++11 brace initialization"""
     a = m.BraceInitialization(123, "test")
     assert a.field1 == 123
     assert a.field2 == "test"

tests/test_sequences_and_iterators.py

@@ -104,7 +104,7 @@ def test_sequence():
 
 
 def test_sequence_length():
-    """#2076: Exception raised by len(arg) should be propagated """
+    """#2076: Exception raised by len(arg) should be propagated"""
 
     class BadLen(RuntimeError):
         pass
@@ -187,7 +187,7 @@ def test_iterator_passthrough():
 
 
 def test_iterator_rvp():
-    """#388: Can't make iterators via make_iterator() with different r/v policies """
+    """#388: Can't make iterators via make_iterator() with different r/v policies"""
     import pybind11_tests.sequences_and_iterators as m
 
     assert list(m.make_iterator_1()) == [1, 2, 3]

tests/test_stl.py

@@ -278,7 +278,7 @@ def test_array_cast_sequence():
 
 
 def test_issue_1561():
-    """ check fix for issue #1561 """
+    """check fix for issue #1561"""
     bar = m.Issue1561Outer()
     bar.list = [m.Issue1561Inner("bar")]
     bar.list