Proxy Connection Failed

Proxy connection failed

$ python -c "import requests; requests.get('https://example.com', proxies={'http':'http://badproxy:3128'})"
Traceback (most recent call last):
  ...
requests.exceptions.ProxyError: Cannot connect to proxy.

Why this happens

Proxy host unreachable or misconfigured.

Fix

Verify proxy address, port, and protocol; check firewall.

Wrong code

import requests
requests.get('https://example.com', proxies={'http':'http://badproxy:3128'})

Fixed code

import requests
proxies = {'http':'http://proxy.local:3128','https':'http://proxy.local:3128'}
requests.get('https://example.com', proxies=proxies, timeout=10)