将我的生成器转换为生成器理解

Question

函数式编程忍者的问题。这是我的发电机：

def get_interesting_line(file,*searches):
    with open(file,'r') as f:
        for line in f:
            if all(search in line for search in searches):
                yield line

我怀疑这可以变成生成器表达式。不过，当我尝试制作它们时，我的头往往会受伤。可能吗？

编辑：这是我的尝试，但没有成功（生成一个生成器对象）：

def test(file, *searches):
    with open(file) as f:
        yield (line for line in f if all(search in line for search in searches))

lines = test('myfile')
next(lines)

Answer 1

您的代码无效，因为

yield (line for line in f if all(search in line for search in searches))

将您的函数变成一个生成器，生成器生成另一个生成器（由生成器表达式构成）。

你需要的是 yield from (Python 3.3+):

yield from (line for line in f if all(search in line for search in searches))

将我的生成器转换为生成器理解

Convert my generator to a generator comprehension

python

list-comprehension

python-3.x