Solve CI error

Author: willson-chen

jsonschema/validators.py

@@ -880,23 +880,23 @@ def store_subschema(self, schema, last_url=None):
 
             last_url:
 
-                The last url.
+                The last URL.
         """
         if not isinstance(schema, dict) \
                 or self.resolution_scope in list_schema:
             return
 
         for k in schema.keys():
             if k in [u"id", u"$id"] and isinstance(schema[k], str):
-                #Splicing the url in the last id with the url in this id,
-                #and store last_url at the same time.
+                # Splicing the url in the last id with the url in this id,
+                # and store last_url at the same time.
                 last_url = urljoin(last_url, schema[k], allow_fragments=True)
                 url, fragment = urldefrag(last_url)
 
-                #Save the schema into self.store[url]
+                # Save the schema into self.store[url]
                 self.store[url] = copy.deepcopy(schema)
 
-                #Add fragment element in self.store[url]
+                # Add fragment element in self.store[url]
                 if fragment:
                     self.store[url][fragment] = copy.deepcopy(schema)