flake8 fixups

Author: jbrockmendel

pandas/tests/tseries/test_offsets.py

@@ -181,7 +181,7 @@ def test_immutable(self):
                 offset._inc = 'foo'
         if hasattr(offset, 'delta'):
             with pytest.raises(TypeError):
-                offset.delta = 6*offset._inc
+                offset.delta = 6 * offset._inc
 
 
 class TestCommon(Base):

pandas/tseries/offsets.py

@@ -140,6 +140,7 @@ class CacheableOffset(object):
     'hour', 'minute', 'second', 'microsecond'
 )
 
+
 def _determine_offset(kwds):
     # timedelta is used for sub-daily plural offsets and all singular
     # offsets relativedelta is used for plural offsets of daily length or
@@ -621,6 +622,7 @@ def __setstate__(self, state):
             # default for prior pickles
             self.normalize = False
 
+
 class BusinessDay(BusinessMixin, SingleConstructorOffset):
     """
     DateOffset subclass representing possibly n business days