[nginxctl/helpers.py] Fixed Python 2.7 support ; linting

Author: SamuelMarks

nginxctl/helpers.py

@@ -5,11 +5,13 @@
 
 if version_info[0] == 2:
     from codecs import open
-    from string import maketrans
+
+    maketrans = string.maketrans
+    string_types = basestring,
 else:
     maketrans = str.maketrans
+    string_types = str,
 
-string_types = (basestring,) if version_info.major == 2 else (str,)  # noqa: F821
 pp = PrettyPrinter(indent=4).pprint
 
 
@@ -112,9 +114,11 @@ def get_dict_by_key_val(obj, key, value):
             "get_dict_by_key_val for {!r} {}".format(type(obj), obj)
         )
 
+
 def rpartial(func, *args):
     return lambda *a: func(*(a + args))
 
+
 def strings(filename, minimum=4):
     with open(filename, errors="ignore") as f:
         result = ""