python中安装包出现Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None))

Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘ProxyError(‘Cannot connect to proxy.’, NewConnectionError(’<pip._vendor.urllib3.connection.HTTPSConnection object at 0x00000255D4FE7088>: Failed to establish a new connection: [WinError 10061] 由于目标计算机积极拒绝，无法连接。’))’: /simple/tensorflow/

win+R输入regedit找到