Minor refactoring based on feedback from GitHub community

Author: thinkingserious

sendgrid/resources/asm_groups.py

@@ -39,8 +39,7 @@ def client(self):
     def get(self, id=None):
         if id == None:
             return self.client.get(self)
-        
-        if isinstance(id, int):
+        else:
             self._endpoint = self._base_endpoint + "/" + str(id)
 
         return self.client.get(self)