Proxier is a library to provide free access Proxy server's hosts as code. Please, check https://proxier.io/.
It consumes data provided by proxier.io APIs.
$ pip install proxier
import proxier
import requests
response = requests.get("http://bot.whatismyipaddress.com/", proxies=proxier.get_requests_proxy())
print("my ip: " + response.text)