Python URL Request under corporate proxy

Question

I'm writing this application where the user can perform a web search to obtain some information from a particular website. Everything works well except when I'm connected to the Internet via Proxy (it's a corporate proxy). The thing is, it works sometimes. By sometimes I mean that if it stops working, all I have to do is to use any web browser (Chrome, IE, etc.) to surf the internet and then python's requests start working as before. The error I get is: OSError('Tunnel connection failed: 407 Proxy Authentication Required',) My guess is that some sort of credentials are validated and the proxy tunnel is up again. I tried with the proxies handlers but it remains the same. My doubts are:

1. How do I know if the proxy need authentication, and if so, how to do it without hardcoding the username and password since this application will be used by others?
2. Is there a way to use the Windows default proxy configuration so it will work like the browsers do?
3. What do you think that happens when I surf the internet and then the python requests start working again?

I tried with requests and urllib.request

Any help is appreciated.

Thank you!

• Nir Alfasi: Possible duplicate of Python requests API using proxy for https request get 407 Proxy Authentication Required

Answer 1

Check if there is any proxy setting in chrome

• bleand: Yes, there is a proxy setting
• bleand: Thanks, but as I said, I've tried with proxies configuration and nothing changed. I also don't want to hardcode the password and if possible avoid asking it. I'm also not sure if that would help since I did a test hardcoding my username and password and nothing changed