Errors should be optional

ekampf · ekampf · commit f827c6b53d7a · 2019-02-06T11:31:17.000-08:00
diff --git a/gql/renderer_dataclasses.py b/gql/renderer_dataclasses.py
@@ -58,7 +58,7 @@ def get_operation_class_name(parsed_query: ParsedQuery):
     def __render_header(self, buffer: CodeChunk):
         buffer.write('# AUTOGENERATED file. Do not Change!')
         buffer.write('from functools import partial')
-        buffer.write('from typing import Any, Callable, Mapping, List')
+        buffer.write('from typing import Optional, Any, Callable, Mapping, List')
         buffer.write('from enum import Enum')
         buffer.write('from dataclasses import dataclass, field')
         buffer.write('from dataclasses_json import dataclass_json')
@@ -126,7 +126,7 @@ def __render_operation(self, parsed_query: ParsedQuery, buffer: CodeChunk, parse
             # operation fields
             buffer.write('')
             buffer.write(f'data: {parsed_op.name}Data = None')
-            buffer.write('errors: Any = None')
+            buffer.write('errors: Optional[Any] = None')
             buffer.write('')
 
             # Execution functions
