Topic Python
Proxies for Camoufox: the proxy dict, geoip and one IP per browser
Camoufox matches timezone and locale to the proxy's IP with geoip=True, but looks the IP up once per process. Which proxy lines keep it right, in 0.5.6.
Proxies for nodriver: browser_args, create_context and the login
nodriver ignores a login in browser_args. Where a proxy with a username and password goes (create_context), and what its local forwarder does, in 0.50.3.
Proxies for Scrapling: proxy=, ProxyRotator and the three fetchers
Scrapling takes a proxy per fetcher, per session or through ProxyRotator. The formats, the rotation and where the password shows up, read in 0.4.15.
Proxies for SeleniumBase: the proxy string, the login and Chrome 142
SeleniumBase takes a proxy as one string with the login inside. How each mode answers the login, what Chrome 142 changed, and how to run several at once.
Proxies for yfinance: the setting moved, and what 429 means
yfinance 1.7.0 dropped the per-call proxy argument. Where the setting lives now, which shape of proxy Yahoo tolerates, and what a proxy does not fix.
Proxies for undetected-chromedriver: Setup, Authentication and SOCKS5 (Measured on Chrome 151)
undetected-chromedriver proxy setup: --proxy-server, why user:pass in the URL fails, three fixes that work, SOCKS5 and headless, measured on Chrome 151.
pip Behind a Proxy: Fix "Cannot Connect to Proxy", 407, and Certificate Errors
How pip finds its proxy, the --proxy flag and pip.conf keys, and the fix for each error: cannot connect to proxy, 407 in the tunnel, and certificate verify failed.
How to Use Proxies With aiohttp (async Python)
How to use proxies with aiohttp: the proxy argument, BasicAuth, trust_env, SOCKS5 through aiohttp-socks, rotating a pool across concurrent tasks, timeouts and retries.
How to Use Proxies With LangChain
How to use proxies with LangChain: route WebBaseLoader, document loaders and scraping tools through a proxy, and why you proxy the data side, not the model call.
requests vs httpx vs aiohttp: Proxies Compared
How the three Python HTTP clients handle proxies: the config each one uses, SOCKS support, sync versus async, connection reuse, and which to pick for a scraper.
How to Use Proxies With HTTPX (proxy, mounts, SOCKS5, async)
Proxy code for httpx 0.28: the proxy argument, mounts per host, AsyncClient, SOCKS5 via httpx[socks], and every error text, measured on a live proxy.
How to use proxies with Python requests
How to send Python requests through a proxy: the proxies dictionary, passwords, sessions, SOCKS5, proxy variables and trust_env, timeouts, retries, and the error each failure raises. Tested with requests 2.34.2 in September 2026.
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Proxies that don't die mid-job
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