Class LambdaExpr

mypy/nodes.py:2869–2890

Lambda expression

class LambdaExpr(FuncItem, Expression):
    """Lambda expression"""

    __match_args__ = ("arguments", "arg_names", "arg_kinds", "body")

    @property
    def name(self) -> str:
        return LAMBDA_NAME

    def expr(self) -> Expression:
        """Return the expression (the body) of the lambda."""
        ret = self.body.body[-1]
        assert isinstance(ret, ReturnStmt)
        expr = ret.expr
        assert expr is not None  # lambda can't have empty body
        return expr

    def accept(self, visitor: ExpressionVisitor[T]) -> T:
        return visitor.visit_lambda_expr(self)

    def is_dynamic(self) -> bool:
        return False


class ListExpr(Expression):