diff options
Diffstat (limited to 'pylint/checkers/variables.py')
| -rw-r--r-- | pylint/checkers/variables.py | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/pylint/checkers/variables.py b/pylint/checkers/variables.py index b4027d602..44044f76b 100644 --- a/pylint/checkers/variables.py +++ b/pylint/checkers/variables.py @@ -1186,6 +1186,8 @@ class VariablesChecker(BaseChecker): ) elif current_consumer.scope_type == "lambda": self.add_message("undefined-variable", node=node, args=name) + elif self._is_only_type_assignment(node, name, defstmt): + self.add_message("undefined-variable", node=node, args=name) current_consumer.mark_as_consumed(name, found_nodes) # check it's not a loop variable used outside the loop @@ -1548,6 +1550,22 @@ class VariablesChecker(BaseChecker): return maybee0601, annotation_return, use_outer_definition + @staticmethod + def _is_only_type_assignment( + node: nodes.Name, name: str, defstmt: nodes.Statement + ) -> bool: + """Check if variable only gets assigned a type and never a value""" + if not isinstance(defstmt, nodes.AnnAssign) or defstmt.value: + return False + for ref_node in node.scope().locals[name][1:]: + if ref_node.lineno < node.lineno: + if not ( + isinstance(ref_node.parent, nodes.AnnAssign) + and ref_node.parent.value + ): + return False + return True + def _ignore_class_scope(self, node): """ Return True if the node is in a local class scope, as an assignment. |