CI: Update version of 'black' (#36493)

Author: MarcoGorelli

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
 -   repo: https://github.com/python/black
-    rev: 19.10b0
+    rev: 20.8b1
     hooks:
     -   id: black
         language_version: python3

asv_bench/benchmarks/arithmetic.py

@@ -125,7 +125,7 @@ def setup(self, op):
         arr1 = np.random.randn(n_rows, int(n_cols / 2)).astype("f8")
         arr2 = np.random.randn(n_rows, int(n_cols / 2)).astype("f4")
         df = pd.concat(
-            [pd.DataFrame(arr1), pd.DataFrame(arr2)], axis=1, ignore_index=True,
+            [pd.DataFrame(arr1), pd.DataFrame(arr2)], axis=1, ignore_index=True
         )
         # should already be the case, but just to be sure
         df._consolidate_inplace()

doc/make.py

@@ -286,7 +286,7 @@ def main():
 
     joined = ",".join(cmds)
     argparser = argparse.ArgumentParser(
-        description="pandas documentation builder", epilog=f"Commands: {joined}",
+        description="pandas documentation builder", epilog=f"Commands: {joined}"
     )
 
     joined = ", ".join(cmds)

doc/source/conf.py

@@ -308,7 +308,7 @@
 
     for method in methods:
         # ... and each of its public methods
-        moved_api_pages.append((f"{old}.{method}", f"{new}.{method}",))
+        moved_api_pages.append((f"{old}.{method}", f"{new}.{method}"))
 
 if pattern is None:
     html_additional_pages = {

doc/source/development/contributing.rst

@@ -720,7 +720,7 @@ submitting code to run the check yourself::
 to auto-format your code. Additionally, many editors have plugins that will
 apply ``black`` as you edit files.
 
-You should use a ``black`` version >= 19.10b0 as previous versions are not compatible
+You should use a ``black`` version 20.8b1 as previous versions are not compatible
 with the pandas codebase.
 
 If you wish to run these checks automatically, we encourage you to use

environment.yml

@@ -15,7 +15,7 @@ dependencies:
   - cython>=0.29.21
 
   # code checks
-  - black=19.10b0
+  - black=20.8b1
   - cpplint
   - flake8<3.8.0  # temporary pin, GH#34150
   - flake8-comprehensions>=3.1.0  # used by flake8, linting of unnecessary comprehensions

pandas/_vendored/typing_extensions.py

@@ -2116,8 +2116,7 @@ def __init_subclass__(cls, *args, **kwargs):
             raise TypeError(f"Cannot subclass {cls.__module__}.Annotated")
 
     def _strip_annotations(t):
-        """Strips the annotations from a given type.
-        """
+        """Strips the annotations from a given type."""
         if isinstance(t, _AnnotatedAlias):
             return _strip_annotations(t.__origin__)
         if isinstance(t, typing._GenericAlias):

pandas/core/aggregation.py

@@ -387,7 +387,7 @@ def validate_func_kwargs(
 
 
 def transform(
-    obj: FrameOrSeries, func: AggFuncType, axis: Axis, *args, **kwargs,
+    obj: FrameOrSeries, func: AggFuncType, axis: Axis, *args, **kwargs
 ) -> FrameOrSeries:
     """
     Transform a DataFrame or Series

pandas/core/algorithms.py

@@ -1022,11 +1022,10 @@ def checked_add_with_arr(arr, b, arr_mask=None, b_mask=None):
         to_raise = ((np.iinfo(np.int64).max - b2 < arr) & not_nan).any()
     else:
         to_raise = (
-            ((np.iinfo(np.int64).max - b2[mask1] < arr[mask1]) & not_nan[mask1]).any()
-            or (
-                (np.iinfo(np.int64).min - b2[mask2] > arr[mask2]) & not_nan[mask2]
-            ).any()
-        )
+            (np.iinfo(np.int64).max - b2[mask1] < arr[mask1]) & not_nan[mask1]
+        ).any() or (
+            (np.iinfo(np.int64).min - b2[mask2] > arr[mask2]) & not_nan[mask2]
+        ).any()
 
     if to_raise:
         raise OverflowError("Overflow in int64 addition")

pandas/core/array_algos/replace.py

@@ -17,7 +17,7 @@
 
 
 def compare_or_regex_search(
-    a: ArrayLike, b: Union[Scalar, Pattern], regex: bool, mask: ArrayLike,
+    a: ArrayLike, b: Union[Scalar, Pattern], regex: bool, mask: ArrayLike
 ) -> Union[ArrayLike, bool]:
     """
     Compare two array_like inputs of the same shape or two scalar values