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편집 파일: package_index.cpython-38.opt-1.pyc
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Various errors may be raised if a problem occurs during downloading. r6 r� rK N)r� r r� � _download_urlrF rA r, � gen_setuprR r> r� r( r� �fetch_distribution)r r% �tmpdirr< �foundr/ r@ r& r& r' r3 - s zPackageIndex.downloadc s� �� d|� i �d}d � ����fdd� }|rH��� ��|� ||�}|s^|dk r^|||�}|dkr��jdk rx��� ||�}|dkr�|s���|� ||�}|dkr���d�r�dp�d|� n�� d|� |j|jd �S dS ) a| Obtain a distribution suitable for fulfilling `requirement` `requirement` must be a ``pkg_resources.Requirement`` instance. If necessary, or if the `force_scan` flag is set, the requirement is searched for in the (online) package index as well as the locally installed packages. If a distribution matching `requirement` is found, the returned distribution's ``location`` is the value you would have gotten from calling the ``download()`` method with the matching distribution's URL or filename. If no matching distribution is found, ``None`` is returned. 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