cleanup

IPython/core/tests/test_magic_terminal.py

@@ -8,17 +8,12 b' Needs to be run by nose (to make ipython session available).'
 #-----------------------------------------------------------------------------
 
 import sys
+from io import StringIO
 from unittest import TestCase
 
 import nose.tools as nt
 
 from IPython.testing import tools as tt
-from IPython.utils.py3compat import PY3
-
-if PY3:
-    from io import StringIO
-else:
-    from StringIO import StringIO
 
 #-----------------------------------------------------------------------------
 # Globals

IPython/core/tests/test_ultratb.py

@@ -16,7 +16,6 b' from IPython.testing import tools as tt'
 from IPython.testing.decorators import onlyif_unicode_paths
 from IPython.utils.syspathcontext import prepended_to_syspath
 from IPython.utils.tempdir import TemporaryDirectory
-from IPython.utils.py3compat import PY3
 
 ip = get_ipython()
 
@@ -226,17 +225,14 b' except Exception:'
     """
 
     def test_direct_cause_error(self):
-        if PY3:
             with tt.AssertPrints(["KeyError", "NameError", "direct cause"]):
                 ip.run_cell(self.DIRECT_CAUSE_ERROR_CODE)
 
     def test_exception_during_handling_error(self):
-        if PY3:
             with tt.AssertPrints(["KeyError", "NameError", "During handling"]):
                 ip.run_cell(self.EXCEPTION_DURING_HANDLING_CODE)
 
     def test_suppress_exception_chaining(self):
-        if PY3:
             with tt.AssertNotPrints("ZeroDivisionError"), \
                     tt.AssertPrints("ValueError", suppress=False):
                 ip.run_cell(self.SUPPRESS_CHAINING_CODE)