diff --git a/setup.cfg b/setup.cfg
index 6ce66a6f2bdbd..d278deac66f43 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -71,28 +71,44 @@ parentdir_prefix = pandas-
 [flake8]
 max-line-length = 88
 ignore =
-    E203,  # space before : (needed for how black formats slicing)
-    W503,  # line break before binary operator
-    W504,  # line break after binary operator
-    E402,  # module level import not at top of file
-    E731,  # do not assign a lambda expression, use a def
-    S001,  # found modulo formatter (incorrect picks up mod operations)
-    B005,  # controversial
-    B006,  # controversial
-    B007,  # controversial
-    B008,  # controversial
-    B009,  # setattr is used to side-step mypy
-    B010,  # getattr is used to side-step mypy
-    B011,  # tests use assert False
-    B015,  # tests use comparisons but not their returned value
-    B301   # false positives
+    # space before : (needed for how black formats slicing)
+    E203,
+    # line break before binary operator
+    W503,
+    # line break after binary operator
+    W504,
+    # module level import not at top of file
+    E402,
+    # do not assign a lambda expression, use a def
+    E731,
+    # found modulo formatter (incorrect picks up mod operations)
+    S001,
+    # controversial
+    B005,
+    # controversial
+    B006,
+    # controversial
+    B007,
+    # controversial
+    B008,
+    # setattr is used to side-step mypy
+    B009,
+    # getattr is used to side-step mypy
+    B010,
+    # tests use assert False
+    B011,
+    # tests use comparisons but not their returned value
+    B015,
+    # false positives
+    B301
 exclude =
     doc/sphinxext/*.py,
     doc/build/*.py,
     doc/temp/*.py,
     .eggs/*.py,
     versioneer.py,
-    env  # exclude asv benchmark environments from linting
+    # exclude asv benchmark environments from linting
+    env
 per-file-ignores =
     # private import across modules
     pandas/tests/*:PDF020
@@ -109,18 +125,27 @@ max-line-length = 84
 bootstrap =
     import numpy as np
     import pandas as pd
-    np  # avoiding error when importing again numpy or pandas
-    pd  # (in some cases we want to do it to show users)
+    # avoiding error when importing again numpy or pandas
+    np
+    # (in some cases we want to do it to show users)
+    pd
 ignore =
-    E203,  # space before : (needed for how black formats slicing)
-    E402,  # module level import not at top of file
-    W503,  # line break before binary operator
+    # space before : (needed for how black formats slicing)
+    E203,
+    # module level import not at top of file
+    E402,
+    # line break before binary operator
+    W503,
     # Classes/functions in different blocks can generate those errors
-    E302,  # expected 2 blank lines, found 0
-    E305,  # expected 2 blank lines after class or function definition, found 0
+    # expected 2 blank lines, found 0
+    E302,
+    # expected 2 blank lines after class or function definition, found 0
+    E305,
     # We use semicolon at the end to avoid displaying plot objects
-    E703,  # statement ends with a semicolon
-    E711,  # comparison to none should be 'if cond is none:'
+    # statement ends with a semicolon
+    E703,
+    # comparison to none should be 'if cond is none:'
+    E711,
 exclude =
     doc/source/development/contributing_docstring.rst,
     # work around issue of undefined variable warnings