Replace five with six

pre_commit/five.py

@@ -1,42 +1,14 @@
 from __future__ import unicode_literals
 
-PY2 = str is bytes
-PY3 = str is not bytes
-
-if PY2:  # pragma: no cover (PY2 only)
-    text = unicode  # flake8: noqa
-    string_types = (text, bytes)
-
-    def n(s):
-        if isinstance(s, bytes):
-            return s
-        else:
-            return s.encode('UTF-8')
-
-    exec("""def reraise(tp, value, tb=None):
-    raise tp, value, tb
-""")
-else:  # pragma: no cover (PY3 only)
-    text = str
-    string_types = (text,)
-
-    def n(s):
-        if isinstance(s, text):
-            return s
-        else:
-            return s.decode('UTF-8')
-
-    def reraise(tp, value, tb=None):
-        if value is None:
-            value = tp()
-        if value.__traceback__ is not tb:
-            raise value.with_traceback(tb)
-        raise value
+import six
 
 
 def to_text(s):
-    return s if isinstance(s, text) else s.decode('UTF-8')
+    return s if isinstance(s, six.text_type) else s.decode('UTF-8')
 
 
 def to_bytes(s):
     return s if isinstance(s, bytes) else s.encode('UTF-8')
+
+
+n = to_bytes if six.PY2 else to_text