tools.py 文件源码

def afilter(function, sequence):
    """Equivalent of filter() that takes an async filter function.

    Returns a list.

    """
    if function is None:
        result(filter(None, sequence)); return
    should_include = yield [function.asynq(elt) for elt in sequence]
    result(list(itertools.compress(sequence, should_include))); return