You could try setting the environment variables for username and password. Then update the proxy string to be an f string and pass in the environment variables. Proxy setting are going to be unique to your endearment. The @proxy.acme.com:9443 is an example of how you would configure the proxy information. If you do not have a proxy then I would just comment this out and try running it again. You will also need to define the proxy headers. Hope this helps.
Fstring Example
configuration.proxy = f"http://{username}:{password}@proxy.acme.com:9443"
Proxy config using urllib3
configuration.proxy = "https://proxy.acme.com:9443/"
configuration.proxy_headers = make_headers(proxy_basic_auth=f"{username}:{mypassword}")