prepped (PreparedRequest Object) has:
body : request body to send to the server.
url: HTTP URL to send the request to.
headers : dictionary of HTTP headers.
hooks : dictionary of callback hooks, for internal usage.
method : HTTP verb to send to the server.
path_url: Build the path URL to use.
deregister_hook(event, hook): Deregister a previously registered hook. Returns True if the hook existed, False if not.
prepare(method=None, url=None, headers=None, files=None, data=None, params=None, auth=None, cookies=None, hooks=None, json=None): Prepares the entire request with the given parameters.
prepare_auth(auth, url=''): Prepares the given HTTP auth data.
prepare_body(data, files, json=None): Prepares the given HTTP body data.
prepare_cookies(cookies):Prepares the given HTTP cookie data.
prepare_headers(headers): Prepares the given HTTP headers.
prepare_hooks(hooks): Prepares the given hooks.
prepare_method(method): Prepares the given HTTP method.
prepare_url(url, params): Prepares the given HTTP URL.
register_hook(event, hook): Properly register a hook.
You can access them prepped.what_you_want.
Reference