diff --git a/_pytest/compat.py b/_pytest/compat.py
index 8499e8882..263305861 100644
--- a/_pytest/compat.py
+++ b/_pytest/compat.py
@@ -14,7 +14,6 @@ import py
 import _pytest
 from _pytest.outcomes import TEST_OUTCOME
 
-
 try:
     import enum
 except ImportError:  # pragma: no cover
@@ -110,11 +109,10 @@ def getfuncargnames(function, is_method=False, cls=None):
     # ordered mapping of parameter names to Parameter instances.  This
     # creates a tuple of the names of the parameters that don't have
     # defaults.
-    arg_names = tuple(
-        p.name for p in signature(function).parameters.values()
-        if (p.kind is Parameter.POSITIONAL_OR_KEYWORD
-            or p.kind is Parameter.KEYWORD_ONLY) and
-        p.default is Parameter.empty)
+    arg_names = tuple(p.name for p in signature(function).parameters.values()
+                      if (p.kind is Parameter.POSITIONAL_OR_KEYWORD or
+                          p.kind is Parameter.KEYWORD_ONLY) and
+                      p.default is Parameter.empty)
     # If this function should be treated as a bound method even though
     # it's passed as an unbound method or function, remove the first
     # parameter name.
@@ -173,8 +171,6 @@ else:
     STRING_TYPES = bytes, str, unicode
     UNICODE_TYPES = unicode,
 
-    from itertools import imap, izip  # NOQA
-
     def ascii_escaped(val):
         """In py2 bytes and str are the same type, so return if it's a bytes
         object, return it unchanged if it is a full ascii string,
diff --git a/_pytest/pytester.py b/_pytest/pytester.py
index 345a1acd0..a65e3f027 100644
--- a/_pytest/pytester.py
+++ b/_pytest/pytester.py
@@ -23,9 +23,7 @@ from _pytest.main import Session, EXIT_OK
 from _pytest.assertion.rewrite import AssertionRewritingHook
 
 
-PYTEST_FULLPATH = os.path.abspath(
-    pytest.__file__.rstrip("oc")
-    ).replace("$py.class", ".py")
+PYTEST_FULLPATH = os.path.abspath(pytest.__file__.rstrip("oc")).replace("$py.class", ".py")
 
 
 def pytest_addoption(parser):
diff --git a/_pytest/recwarn.py b/_pytest/recwarn.py
index c9f86a483..4fceb10a7 100644
--- a/_pytest/recwarn.py
+++ b/_pytest/recwarn.py
@@ -232,7 +232,5 @@ class WarningsChecker(WarningsRecorder):
                     else:
                         fail("DID NOT WARN. No warnings of type {0} matching"
                              " ('{1}') was emitted. The list of emitted warnings"
-                             " is: {2}.".format(
-                                self.expected_warning,
-                                self.match_expr,
-                                [each.message for each in self]))
+                             " is: {2}.".format(self.expected_warning, self.match_expr,
+                                                [each.message for each in self]))
diff --git a/testing/logging/test_fixture.py b/testing/logging/test_fixture.py
index b5bee4233..c27b31137 100644
--- a/testing/logging/test_fixture.py
+++ b/testing/logging/test_fixture.py
@@ -3,7 +3,7 @@ import logging
 
 
 logger = logging.getLogger(__name__)
-sublogger = logging.getLogger(__name__+'.baz')
+sublogger = logging.getLogger(__name__ + '.baz')
 
 
 def test_fixture_help(testdir):