python - Implementing Selenium to use authentication proxies that change

Question

I am trying to get selenium to use a proxy that will change at a certain point.

from seleniumwire import webdriver
def proxyManage():
    proxyChange("test.com", "8000", "user1", "password1")

def proxyChange(host, port, username, password):
    options = {
        'proxy': {
            'http': 'http://'+username+':'+password+'@'+host+':'+port, 
            'https': 'https://'+username+':'+password+'@'+host+':'+port,
        }
    }
    PATH = "D:/Programming/undetectable chrome/chromedriver.exe"
    browser = webdriver.Chrome(PATH, options=options)
    browser.get("https://whatismyipaddress.com/")
    

proxyManage()

So I import seleniumwire as I am unsure how normal selenium uses proxies. Now when I try to run the program to test on the website if it works I get an error below,

Traceback (most recent call last):
  File "D:ProgrammingPythonproxyTest.py", line 20, in <module>
    proxyManage()
  File "D:ProgrammingPythonproxyTest.py", line 6, in proxyManage
    proxyChange("test.com", "8000", "user1", "password1")
  File "D:ProgrammingPythonproxyTest.py", line 16, in proxyChange
    browser = webdriver.Chrome(PATH, options=options)
  File "C:UsersUserAppDataLocalProgramsPythonPython39libsite-packagesseleniumwirewebdriverrowser.py", line 97, in __init__
    chrome_options.add_argument('proxy-bypass-list=<-loopback>')
AttributeError: 'dict' object has no attribute 'add_argument'

So first is there a way I can pass these arguments to proxyChange() without the error. The idea is to have a counter in proxyManage() and every time it runs it will move the next line in the proxy.txt file and then parse these arguments to proxyChange() and hopefully it will update without the program closing again? Would be nice to multithread this.

Answer 1

You can try to construct it first before passing it to the dict:

http_proxy = f"'http://{username}:{password}@{host}:{port}"
https_proxy = f"'https://{username}:{password}@{host}:{port}"
options = {
        'proxy': {
            'http': http_proxy,
            'https': https_proxy
        }
    }

This only works for Python >=3.6. If you're using lower version, concentrate strings should work as well.