reformat

Author: Carreau

ipykernel/inprocess/tests/test_kernel.py

@@ -103,21 +103,19 @@ def test_stdout(self):
         reason="Currently don't capture during test as pytest does its own capturing"
     )
     def test_capfd(self):
-        """ Does correctly capture fd
-        """
+        """Does correctly capture fd"""
         kernel = InProcessKernel()
 
         with capture_output() as io:
             kernel.shell.run_cell('print("foo")')
-        assert io.stdout == 'foo\n'
+        assert io.stdout == "foo\n"
 
         kc = BlockingInProcessKernelClient(kernel=kernel, session=kernel.session)
         kernel.frontends.append(kc)
-        kc.execute('import os')
+        kc.execute("import os")
         kc.execute('os.system("echo capfd")')
         out, err = assemble_output(kc.iopub_channel)
-        assert out == 'capfd\n'
-
+        assert out == "capfd\n"
 
     def test_getpass_stream(self):
         "Tests that kernel getpass accept the stream parameter"

ipykernel/iostream.py

@@ -15,7 +15,6 @@
 import traceback
 from io import StringIO, TextIOBase
 import io
-import os
 
 import zmq
 if zmq.pyzmq_version_info() >= (17, 0):
@@ -39,6 +38,7 @@
 # IO classes
 #-----------------------------------------------------------------------------
 
+
 class IOPubThread(object):
     """An object for sending IOPub messages in a background thread
 
@@ -293,7 +293,7 @@ def fileno(self):
         """
         Things like subprocess will peak and write to the fileno() of stderr/stdout.
         """
-        if getattr(self, '_original_stdstream_copy', None) is not None:
+        if getattr(self, "_original_stdstream_copy", None) is not None:
             return self._original_stdstream_copy
         else:
             raise io.UnsupportedOperation("fileno")