pip install failing with 407 Proxy Authentication

问题:

I am trying to use the below pip install command, but its failing with Proxy authentication required issue. I have already configured my proxies inside my RHEL7.x Server.

Command Used: `pip install --proxy https://'username:pwd'@proxy:host  --upgrade pip`

Logs:

Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', error('Tunnel connection failed: 407 Proxy Authentication Required',))': /simple/pip/
Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', error('Tunnel connection failed: 407 Proxy Authentication Required',))': /simple/pip/
Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', error('Tunnel connection failed: 407 Proxy Authentication Required',))': /simple/pip/
Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', error('Tunnel connection failed: 407 Proxy Authentication Required',))': /simple/pip/
Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', error('Tunnel connection failed: 407 Proxy Authentication Required',))': /simple/pip/

回答1:

This is the first thing you should try:

Open the command prompt(CMD).

Export the proxy settings :

:\set http_proxy=http://username:password@proxyAddress:port

:\set https_proxy=https://username:password@proxyAddress:port

Install the package you want to install:

:\pip install PackageName

回答2:

Error 407 means that the authentication for the proxy is missing / wrong. Remove the ' from the username:pwd part, i.e. use: pip install --proxy https://username:pwd@proxy:host.

Try opening an internet connection from that server just prior to installing the Python package, as another option.

If this is not helping, try the the options given in the answers to the questions here, here and here.