Fix flake8 warnings.

Author: alexitkes

pandas/tests/util/test_deprecate_nonkeyword_arguments.py

@@ -21,16 +21,16 @@ def test_two_arguments(x):
     Check whether no future warning is produced if two
     positional arguments given.
     """
-    assert f(1, 5) = 6
+    assert f(1, 5) == 6
 
 
-def test_two_arguments(x):
+def test_two_and_two_arguments(x):
     """
     Check whether no future warning is produced if two
     positional arguments and two keyword arguments are
     given.
     """
-    assert f(1, 3, c=3, d=5) = 12
+    assert f(1, 3, c=3, d=5) == 12
 
 
 def test_four_arguments(x):
@@ -39,4 +39,4 @@ def test_four_arguments(x):
     positional arguments given.
     """
     with tm.assert_produces_warning(FutureWarning):
-        assert f(1, 2, 3, 4) = 10
+        assert f(1, 2, 3, 4) == 10

pandas/util/_decorators.py

@@ -214,10 +214,10 @@ def wrapper(*args, **kwargs):
 
 def deprecate_nonkeyword_arguments(
     version: str,
-    allowed_args:,
+    allowed_args,
     *,
-    stacklevel : int = 2
-) -> Callable
+    stacklevel : int = 2,
+) -> Callable:
     """
     Decorator to deprecate a use of non-keyword arguments of a function.