Turning on/off Proxies via client method!

Originally opened by @AmericanY on 2022-04-23 03:49:12 in encode/httpx

import trio
import httpx


proxies = {
    'all://': 'http:127.0.0.1:8866'
}


async def main():
    async with httpx.AsyncClient(timeout=10, proxies=proxies) as client:
        # how do i access proxies here which i previously set?
        # print(client.proxies)

        # imagine that i will do some operations here and then i would like to turn off proxies
        # client.proxies = False


if __name__ == "__main__":
    trio.run(main)

Start by examining how httpx.AsyncClient accepts and stores the proxies argument, including the client lifecycle shown in the example. Define the expected public behavior for inspecting and turning proxies off after initialization, then add coverage demonstrating proxy use followed by disabled-proxy operations.