youtube-dl/devscripts/lazy_load_template.py

# encoding: utf-8
from __future__ import unicode_literals

import re


class LazyLoadExtractor(object):
    _module = None

    @classmethod
    def ie_key(cls):
        return cls.__name__[:-2]

    def __new__(cls, *args, **kwargs):
        mod = __import__(cls._module, fromlist=(cls.__name__,))
        real_cls = getattr(mod, cls.__name__)
        instance = real_cls.__new__(real_cls)
        instance.__init__(*args, **kwargs)
        return instance
lazy extractors: specify the encoding When building with python3 the unicode characters are not escaped, python2 needs to know the encoding. 2016-02-11 21:49:02 +08:00			`# encoding: utf-8`
Add experimental support for lazy loading the info extractors 'make lazy-extractors' creates the youtube_dl/extractor/lazy_extractors.py (imported by youtube_dl/extractor/__init__.py), which contains simplified classes that only have the 'suitable' class method and that load the appropiate class with the '__new__' method when a instance is created. 2016-02-10 21:01:31 +08:00			`from __future__ import unicode_literals`

			`import re`


			`class LazyLoadExtractor(object):`
			`_module = None`

			`@classmethod`
			`def ie_key(cls):`
			`return cls.__name__[:-2]`

lazy extractors: Initialize the real info extractor According to the docs '__init__' is only called automatically if '__new__' returns an instance of the original class. 2016-02-21 19:46:14 +08:00			`def __new__(cls, args, *kwargs):`
Add experimental support for lazy loading the info extractors 'make lazy-extractors' creates the youtube_dl/extractor/lazy_extractors.py (imported by youtube_dl/extractor/__init__.py), which contains simplified classes that only have the 'suitable' class method and that load the appropiate class with the '__new__' method when a instance is created. 2016-02-10 21:01:31 +08:00			`mod = __import__(cls._module, fromlist=(cls.__name__,))`
			`real_cls = getattr(mod, cls.__name__)`
lazy extractors: Initialize the real info extractor According to the docs '__init__' is only called automatically if '__new__' returns an instance of the original class. 2016-02-21 19:46:14 +08:00			`instance = real_cls.__new__(real_cls)`
			`instance.__init__(args, *kwargs)`
			`return instance`