Code climate: mypy: fix union-attr in several trivial cases

Author: stanislaw

strictdoc/export/html/form_objects/rows/row_with_grammar_element_form_object.py

@@ -1,4 +1,3 @@
-# mypy: disable-error-code="union-attr"
 from dataclasses import dataclass
 from typing import Any, Dict, List
 

strictdoc/export/html/generators/view_objects/document_screen_view_object.py

@@ -1,4 +1,3 @@
-# mypy: disable-error-code="union-attr"
 from dataclasses import dataclass
 from datetime import datetime
 from typing import Any, Iterator, List, Optional, Sequence, Tuple, Union
@@ -305,6 +304,7 @@ def get_document_by_path(self, full_path: str) -> SDocDocument:
         )
 
     def get_grammar_elements(self) -> List[GrammarElement]:
+        assert self.document.grammar is not None
         return self.document.grammar.elements
 
     def table_of_contents(

strictdoc/export/html/generators/view_objects/search_screen_view_object.py

@@ -1,4 +1,3 @@
-# mypy: disable-error-code="union-attr"
 from dataclasses import dataclass
 from typing import Iterator, List, Optional, Union
 

strictdoc/export/html/generators/view_objects/source_file_view_object.py

@@ -1,4 +1,3 @@
-# mypy: disable-error-code="union-attr"
 from dataclasses import dataclass
 from typing import Any, List, Optional, Union