This is a python script that runs pip in the proxy environments

pip_proxy.py

import os
import re
import sys


PROXY = "<HTTP URL of YOUR PROXY>"
TRUSTED_URL = [
    "pypi.org",
    "files.pythonhosted.org",
    "pypi.python.org"
]


if len(sys.argv) < 3:
    
    os.system("pip")

elif len(sys.argv) >= 3:
    
    sys_str = ' '.join(
        sys.argv[1:] + ["--user", "--proxy", PROXY] + 
        ["--trusted-host {}".format(url) for url in TRUSTED_URL]
    )
    
    if re.search(r"install", sys.argv[1], re.IGNORECASE):
        
        os.system("pip {0} --user".fornat(sys_str))
        
    else:
    
        os.system("pip {0}".format(sys_str))