pip install gfwlist2pac

usage: gfwlist2pac [-h] [-i GFWLIST] -f PAC -p PROXY [--user-rule USER_RULE]

optional arguments:
  -h, --help            show this help message and exit
  -i GFWLIST, --input GFWLIST
                        path to gfwlist
  -f PAC, --file PAC    path to output pac
  -p PROXY, --proxy PROXY
                        the proxy parameter in the pac file, for example,
                        "SOCKS5 127.0.0.1:1080;"
  --user-rule USER_RULE
                        user rule file, which will be appended to gfwlist

Testing pac generated by gfwlist2pac
total: 35.115832999999995ms
avg: 0.5074542341040461ns

Testing pac generated by switchysharp
total: 58800.679729ms
avg: 849.72080533237ns