Method run

mutable_defaults.py:30–42

(self)

        self.tree = tree

    def run(self):
        for node in ast.walk(self.tree):
            if isinstance(node, ast.FunctionDef):
                for default in node.args.defaults:
                    if any([
                        isinstance(default, mutable_type)
                        for mutable_type in mutable_types
                    ]):
                        error_msg = self._error_tmpl.format(
                            self._code, type(default).__name__
                        )
                        yield (default.lineno, default.col_offset,
                               error_msg, type(self))