ansible/utils/: PEP8 compliancy (#24686)

- Make PEP8 compliant

lib/ansible/utils/vars.py

@@ -23,20 +23,20 @@ import ast
 import random
 import uuid
 
-from json import dumps
 from collections import MutableMapping
+from json import dumps
 
-from ansible.module_utils.six import iteritems, string_types
 
 from ansible import constants as C
 from ansible.errors import AnsibleError, AnsibleOptionsError
-from ansible.parsing.splitter import parse_kv
+from ansible.module_utils.six import iteritems, string_types
 from ansible.module_utils._text import to_native, to_text
+from ansible.parsing.splitter import parse_kv
 
 
-_MAXSIZE   = 2**32
-cur_id     = 0
-node_mac   = ("%012x" % uuid.getnode())[:12]
+_MAXSIZE = 2 ** 32
+cur_id = 0
+node_mac = ("%012x" % uuid.getnode())[:12]
 random_int = ("%08x" % random.randint(0, _MAXSIZE))[:8]
 
 
@@ -51,6 +51,7 @@ def get_unique_id():
         ("%012x" % cur_id)[:12],
     ])
 
+
 def _validate_mutable_mappings(a, b):
     """
     Internal convenience function to ensure arguments are MutableMappings