make_lazy_extractors.py 文件源码

def build_lazy_ie(ie, name):
    valid_url = getattr(ie, '_VALID_URL', None)
    s = ie_template.format(
        name=name,
        bases=', '.join(map(get_base_name, ie.__bases__)),
        valid_url=valid_url,
        module=ie.__module__)
    if ie.suitable.__func__ is not InfoExtractor.suitable.__func__:
        s += '\n' + getsource(ie.suitable)
    if hasattr(ie, '_make_valid_url'):
        # search extractors
        s += make_valid_template.format(valid_url=ie._make_valid_url())
    return s


# find the correct sorting and add the required base classes so that sublcasses
# can be correctly created