diff --git a/IPython/core/tests/print_argv.py b/IPython/core/tests/print_argv.py
index 0e92bdd..4ec9e27 100644
--- a/IPython/core/tests/print_argv.py
+++ b/IPython/core/tests/print_argv.py
@@ -1,2 +1,3 @@
 import sys
+
 print(sys.argv[1:])
diff --git a/IPython/core/tests/test_autocall.py b/IPython/core/tests/test_autocall.py
index ded9f78..925a1cc 100644
--- a/IPython/core/tests/test_autocall.py
+++ b/IPython/core/tests/test_autocall.py
@@ -8,6 +8,7 @@ with better-isolated tests that don't rely on the global instance in iptest.
 from IPython.core.splitinput import LineInfo
 from IPython.core.prefilter import AutocallChecker
 
+
 def doctest_autocall():
     """
     In [1]: def f1(a,b,c):
diff --git a/IPython/core/tests/test_splitinput.py b/IPython/core/tests/test_splitinput.py
index 8969da2..1462e7f 100644
--- a/IPython/core/tests/test_splitinput.py
+++ b/IPython/core/tests/test_splitinput.py
@@ -32,6 +32,7 @@ tests.append(("Pérez Fernando", ("", "", "Pérez", "Fernando")))
 def test_split_user_input():
     return tt.check_pairs(split_user_input, tests)
 
+
 def test_LineInfo():
     """Simple test for LineInfo construction and str()"""
     linfo = LineInfo("  %cd /home")
diff --git a/IPython/lib/tests/test_clipboard.py b/IPython/lib/tests/test_clipboard.py
index 802f753..6597c94 100644
--- a/IPython/lib/tests/test_clipboard.py
+++ b/IPython/lib/tests/test_clipboard.py
@@ -2,6 +2,7 @@ from IPython.core.error import TryNext
 from IPython.lib.clipboard import ClipboardEmpty
 from IPython.testing.decorators import skip_if_no_x11
 
+
 @skip_if_no_x11
 def test_clipboard_get():
     # Smoketest for clipboard access - we can't easily guarantee that the
diff --git a/IPython/utils/contexts.py b/IPython/utils/contexts.py
index 7f95d44..73c3f2e 100644
--- a/IPython/utils/contexts.py
+++ b/IPython/utils/contexts.py
@@ -7,6 +7,7 @@ import warnings
 # Copyright (c) IPython Development Team.
 # Distributed under the terms of the Modified BSD License.
 
+
 class preserve_keys(object):
     """Preserve a set of keys in a dictionary.
 
diff --git a/IPython/utils/eventful.py b/IPython/utils/eventful.py
index 661851e..837c6e0 100644
--- a/IPython/utils/eventful.py
+++ b/IPython/utils/eventful.py
@@ -1,4 +1,3 @@
-
 from warnings import warn
 
 warn("IPython.utils.eventful has moved to traitlets.eventful", stacklevel=2)
diff --git a/IPython/utils/log.py b/IPython/utils/log.py
index bb262ed..f9dea91 100644
--- a/IPython/utils/log.py
+++ b/IPython/utils/log.py
@@ -1,4 +1,3 @@
-
 from warnings import warn
 
 warn("IPython.utils.log has moved to traitlets.log", stacklevel=2)
diff --git a/IPython/utils/tempdir.py b/IPython/utils/tempdir.py
index 5afc5d6..a233c73 100644
--- a/IPython/utils/tempdir.py
+++ b/IPython/utils/tempdir.py
@@ -48,6 +48,7 @@ class TemporaryWorkingDirectory(TemporaryDirectory):
         with TemporaryWorkingDirectory() as tmpdir:
             ...
     """
+
     def __enter__(self):
         self.old_wd = Path.cwd()
         _os.chdir(self.name)