Merge pull request #893 from asottile/os-error-is-an-alias

also rewrite os.error -> OSError

Author: asottile

pyupgrade/_data.py

@@ -40,6 +40,7 @@ class State(NamedTuple):
     '__future__',
     'functools',
     'mmap',
+    'os',
     'select',
     'six',
     'six.moves',

pyupgrade/_plugins/oserror_aliases.py

@@ -17,7 +17,7 @@
 from pyupgrade._token_helpers import replace_name
 
 ERROR_NAMES = frozenset(('EnvironmentError', 'IOError', 'WindowsError'))
-ERROR_MODULES = frozenset(('mmap', 'select', 'socket'))
+ERROR_MODULES = frozenset(('mmap', 'select', 'socket', 'os'))
 
 
 def _fix_oserror_except(