像写 shell 一样写 Python

from functools import partial

ret = None

class pipe:
    def __init__(self, data):
        self.data = data

    def __or__(self, right):
        if right is ret:
            return self.data
        elif isinstance(right, tuple):
            return pipe(partial(*right)(self.data))
        else:
            return pipe(right(self.data))

# with partial function
pipe(10) | range | partial(map, lambda x: x ** 2) | list | print
# simplify partial function
pipe(10) | range | (map, lambda x: x ** 2) | list | print
# assign return value to x
x = pipe(10) | range | (map, lambda x: x ** 2) | list | ret

另外两个成果：

https://github.com/czheo/czheo.github.io/issues/9

https://github.com/czheo/czheo.github.io/issues/10