Method lookup

mypy/semanal.py:6507–6515

(
        self, name: str, ctx: Context, suppress_errors: bool = False
    )

    #

    def lookup(
        self, name: str, ctx: Context, suppress_errors: bool = False
    ) -> SymbolTableNode | None:
        node = self._lookup(name, ctx, suppress_errors)
        if node is not None:
            # This call is unfortunate from performance point of view, but
            # needed for rare cases like e.g. testIncrementalChangingAlias.
            self.record_imported_symbol(node)
        return node

    def record_imported_symbol(self, sym: SymbolTableNode) -> None:
        """If the symbol was not defined in current module, add its module to module_refs."""