python - 传递 **kwargs 和尾随逗号的语法错误

Question

我想知道为什么这是 Python 3.4 中的语法错误:

some_function(
  filename = "foobar.c",
  **kwargs,
)

在删除 **kwargs 后的尾随逗号时有效。

Answer 1

正如 vaultah 所指出的(出于某种原因他懒得发布答案)，这是 reported on the issue tracker从那以后就改变了。从 Python 3.6 开始，语法将正常工作。

To be explicit, yes, I want to allow trailing comma even after *args or **kwds. And that's what the patch does. —Guido van Rossum