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N�CERT_)r( � isinstance�strr r7 �� candidate�resr r r �resolve_cert_reqs� s ri c C s@ | du r t S t| t�r<tt| d�}|du r8ttd| �}|S | S )z like resolve_cert_reqs N� PROTOCOL_)r, rd re r r7 rf r r r �resolve_ssl_version� s rk c s� | r | t krt} t| �� � �|p"t� |du r4tjn|}|du rdd}|tO }|tO }|t O }|t O }� j |O _ |tjks�t j dkr�t� dd�dur�d� _� fdd�}|tjkr�|� _|� n |� |� _t� d�r�tj�d �}|r�|� _� S ) a All arguments have the same meaning as ``ssl_wrap_socket``. By default, this function does a lot of the same work that ``ssl.create_default_context`` does on Python 3.4+. It: - Disables SSLv2, SSLv3, and compression - Sets a restricted set of server ciphers If you wish to enable SSLv3, you can do:: from pip._vendor.urllib3.util import ssl_ context = ssl_.create_urllib3_context() context.options &= ~ssl_.OP_NO_SSLv3 You can do the same to enable compression (substituting ``COMPRESSION`` for ``SSLv3`` in the last line above). :param ssl_version: The desired protocol version to use. 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