Python을 사용하여 원시 HTTP 요청을 캡처하고 인쇄하는 방법은 무엇입니까?

<code class="python">import requests

req = requests.Request('POST','http://stackoverflow.com',headers={'X-Custom':'Test'},data='a=1&amp;b=2')
prepared = req.prepare()

def pretty_print_POST(req):
    """
    Pretty-print the prepared request.

    Note: The formatting used here may differ from the actual request.
    """
    print('{}\n{}\r\n{}\r\n\r\n{}'.format(
        '-----------START-----------',
        req.method + ' ' + req.url,
        '\r\n'.join('{}: {}'.format(k, v) for k, v in req.headers.items()),
        req.body,
    ))

pretty_print_POST(prepared)</code>

<code class="python">s = requests.Session()
s.send(prepared)</code>