Charles抓不到python的请求，代理无效怎么办

有一天兄弟发现配置了Charles，电脑上各个应用抓包都抓到了，就是python代码一跑，不仅抓不到包，而且连网络都不通了。咋办？

原因是Charles代理开启以后，是个虚拟网卡，和本地ip不一致。
故可以通过配http_proxy环境变量解决，但不方便测试，当关闭Charles后，还得改回去，否则又连不了网。
所以，折中方案是在python代码中配置一下临时环境变量：

http.verify = False
# proxies配置代理设置无效，连不上时，使用环境变量配置代理
# http.proxies = {
#     "http": 'http://172.31.192.1:8888',
#     "https": 'http://172.31.192.1:8888',
# }
# 使用环境变量临时配置代理
os.environ["http_proxy"] = 'http://172.31.192.1:8888'
os.environ["https_proxy"] = 'http://172.31.192.1:8888'

http://172.31.192.1:8888 即Charles代理服务器地址，可通过以下方式获取

以下是联网失败报错：

test_hsl.py:43 (test_play_list)
self = 
method = 'GET', url = '/', body = None
headers = {'User-Agent': 'python-requests/2.27.1', 'Accept-Encoding': 'gzip, deflate', 'Accept': '**', 'Connection': 'keep-alive'}
retries = Retry(total=0, connect=None, read=False, redirect=None, status=None)
redirect = False, assert_same_host = False
timeout = Timeout(connect=None, read=None, total=None), pool_timeout = None
release_conn = False, chunked = False, body_pos = None
response_kw = {'decode_content': False, 'preload_content': False}
parsed_url = Url(scheme=None, auth=None, host=None, port=None, path='/', query=None, fragment=None)
destination_scheme = None, conn = None, release_this_conn = True
http_tunnel_required = True, err = None, clean_exit = False

    def urlopen(
        self,
        method,
        url,
        body=None,
        headers=None,
        retries=None,
        redirect=True,
        assert_same_host=True,
        timeout=_Default,
        pool_timeout=None,
        release_conn=None,
        chunked=False,
        body_pos=None,
        **response_kw
    ):
        """
        Get a connection from the pool and perform an HTTP request. This is the
        lowest level call for making a request, so you'll need to specify all
        the raw details.
    
        .. note::
    
           More commonly, it's appropriate to use a convenience method provided
           by :class:`.RequestMethods`, such as :meth:`request`.
    
        .. note::
    
           `release_conn` will only behave as expected if
           `preload_content=False` because we want to make
           `preload_content=False` the default behaviour someday soon without
           breaking backwards compatibility.
    
        :param method:
            HTTP request method (such as GET, POST, PUT, etc.)
    
        :param url:
            The URL to perform the request on.
    
        :param body:
            Data to send in the request body, either :class:`str`, :class:`bytes`,
            an iterable of :class:`str`/:class:`bytes`, or a file-like object.
    
        :param headers:
            Dictionary of custom headers to send, such as User-Agent,
            If-None-Match, etc. If None, pool headers are used. If provided,
            these headers completely replace any pool-specific headers.
    
        :param retries:
            Configure the number of retries to allow before raising a
            :class:`~urllib3.exceptions.MaxRetryError` exception.
    
            Pass ``None`` to retry until you receive a response. Pass a
            :class:`~urllib3.util.retry.Retry` object for fine-grained control
            over different types of retries.
            Pass an integer number to retry connection errors that many times,
            but no other types of errors. Pass zero to never retry.
    
            If ``False``, then retries are disabled and any exception is raised
            immediately. Also, instead of raising a MaxRetryError on redirects,
            the redirect response will be returned.
    
        :type retries: :class:`~urllib3.util.retry.Retry`, False, or an int.
    
        :param redirect:
            If True, automatically handle redirects (status codes 301, 302,
            303, 307, 308). Each redirect counts as a retry. Disabling retries
            will disable redirect, too.
    
        :param assert_same_host:
            If ``True``, will make sure that the host of the pool requests is
            consistent else will raise HostChangedError. When ``False``, you can
            use the pool on an HTTP proxy and request foreign hosts.
    
        :param timeout:
            If specified, overrides the default timeout for this one
            request. It may be a float (in seconds) or an instance of
            :class:`urllib3.util.Timeout`.
    
        :param pool_timeout:
            If set and the pool is set to block=True, then this method will
            block for ``pool_timeout`` seconds and raise EmptyPoolError if no
            connection is available within the time period.
    
        :param release_conn:
            If False, then the urlopen call will not release the connection
            back into the pool once a response is received (but will release if
            you read the entire contents of the response such as when
            `preload_content=True`). This is useful if you're not preloading
            the response's content immediately. You will need to call
            ``r.release_conn()`` on the response ``r`` to return the connection
            back into the pool. If None, it takes the value of
            ``response_kw.get('preload_content', True)``.
    
        :param chunked:
            If True, urllib3 will send the body using chunked transfer
            encoding. Otherwise, urllib3 will send the body using the standard
            content-length form. Defaults to False.
    
        :param int body_pos:
            Position to seek to in file-like body in the event of a retry or
            redirect. Typically this won't need to be set because urllib3 will
            auto-populate the value when needed.
    
        :param \**response_kw:
            Additional parameters are passed to
            :meth:`urllib3.response.HTTPResponse.from_httplib`
        """
    
        parsed_url = parse_url(url)
        destination_scheme = parsed_url.scheme
    
        if headers is None:
            headers = self.headers
    
        if not isinstance(retries, Retry):
            retries = Retry.from_int(retries, redirect=redirect, default=self.retries)
    
        if release_conn is None:
            release_conn = response_kw.get("preload_content", True)
    
        # Check host
        if assert_same_host and not self.is_same_host(url):
            raise HostChangedError(self, url, retries)
    
        # Ensure that the URL we're connecting to is properly encoded
        if url.startswith("/"):
            url = six.ensure_str(_encode_target(url))
        else:
            url = six.ensure_str(parsed_url.url)
    
        conn = None
    
        # Track whether `conn` needs to be released before
        # returning/raising/recursing. Update this variable if necessary, and
        # leave `release_conn` constant throughout the function. That way, if
        # the function recurses, the original value of `release_conn` will be
        # passed down into the recursive call, and its value will be respected.
        #
        # See issue #651 [1] for details.
        #
        # [1] 
        release_this_conn = release_conn
    
        http_tunnel_required = connection_requires_http_tunnel(
            self.proxy, self.proxy_config, destination_scheme
        )
    
        # Merge the proxy headers. Only done when not using HTTP CONNECT. We
        # have to copy the headers dict so we can safely change it without those
        # changes being reflected in anyone else's copy.
        if not http_tunnel_required:
            headers = headers.copy()
            headers.update(self.proxy_headers)
    
        # Must keep the exception bound to a separate variable or else Python 3
        # complains about UnboundLocalError.
        err = None
    
        # Keep track of whether we cleanly exited the except block. This
        # ensures we do proper cleanup in finally.
        clean_exit = False
    
        # Rewind body position, if needed. Record current position
        # for future rewinds in the event of a redirect/retry.
        body_pos = set_file_position(body, body_pos)
    
        try:
            # Request a connection from the queue.
            timeout_obj = self._get_timeout(timeout)
            conn = self._get_conn(timeout=pool_timeout)
    
            conn.timeout = timeout_obj.connect_timeout
    
            is_new_proxy_conn = self.proxy is not None and not getattr(
                conn, "sock", None
            )
            if is_new_proxy_conn and http_tunnel_required:
                self._prepare_proxy(conn)
    
            # Make the request on the httplib connection object.
            httplib_response = self._make_request(
                conn,
                method,
                url,
                timeout=timeout_obj,
                body=body,
                headers=headers,
                chunked=chunked,
            )
    
            # If we're going to release the connection in ``finally:``, then
            # the response doesn't need to know about the connection. Otherwise
            # it will also try to release it and we'll have a double-release
            # mess.
            response_conn = conn if not release_conn else None
    
            # Pass method to Response for length checking
            response_kw["request_method"] = method
    
            # Import httplib's response into our own wrapper object
            response = self.ResponseCls.from_httplib(
                httplib_response,
                pool=self,
                connection=response_conn,
                retries=retries,
                **response_kw
            )
    
            # Everything went great!
            clean_exit = True
    
        except EmptyPoolError:
            # Didn't get a connection from the pool, no need to clean up
            clean_exit = True
            release_this_conn = False
            raise
    
        except (
            TimeoutError,
            HTTPException,
            SocketError,
            ProtocolError,
            BaseSSLError,
            SSLError,
            CertificateError,
        ) as e:
            # Discard the connection for these exceptions. It will be
            # replaced during the next _get_conn() call.
            clean_exit = False
    
            def _is_ssl_error_message_from_http_proxy(ssl_error):
                # We're trying to detect the message 'WRONG_VERSION_NUMBER' but
                # SSLErrors are kinda all over the place when it comes to the message,
                # so we try to cover our bases here!
                message = " ".join(re.split("[^a-z]", str(ssl_error).lower()))
                return (
                    "wrong version number" in message or "unknown protocol" in message
                )
    
            # Try to detect a common user error with proxies which is to
            # set an HTTP proxy to be HTTPS when it should be 'http://'
            # (ie {'http': 'http://proxy', 'https': 'https://proxy'})
            # Instead we add a nice error message and point to a URL.
            if (
                isinstance(e, BaseSSLError)
                and self.proxy
                and _is_ssl_error_message_from_http_proxy(e)
            ):
                e = ProxyError(
                    "Your proxy appears to only use HTTP and not HTTPS, "
                    "try changing your proxy URL to be HTTP. See: "
                    "https://urllib3.readthedocs.io/en/1.26.x/advanced-usage.html"
                    "#https-proxy-error-http-proxy",
                    SSLError(e),
                )
            elif isinstance(e, (BaseSSLError, CertificateError)):
                e = SSLError(e)
            elif isinstance(e, (SocketError, NewConnectionError)) and self.proxy:
                e = ProxyError("Cannot connect to proxy.", e)
            elif isinstance(e, (SocketError, HTTPException)):
                e = ProtocolError("Connection aborted.", e)
    
>           retries = retries.increment(
                method, url, error=e, _pool=self, _stacktrace=sys.exc_info()[2]
            )

C:Python310libsite-packagesurllib3connectionpool.py:785: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = Retry(total=0, connect=None, read=False, redirect=None, status=None)
method = 'GET', url = '/', response = None
error = ProxyError('Your proxy appears to only use HTTP and not HTTPS, try changing your proxy URL to be HTTP. See: https://ur...#https-proxy-error-http-proxy', SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:997)')))
_pool = 
_stacktrace = 

    def increment(
        self,
        method=None,
        url=None,
        response=None,
        error=None,
        _pool=None,
        _stacktrace=None,
    ):
        """Return a new Retry object with incremented retry counters.
    
        :param response: A response object, or None, if the server did not
            return a response.
        :type response: :class:`~urllib3.response.HTTPResponse`
        :param Exception error: An error encountered during the request, or
            None if the response was received successfully.
    
        :return: A new ``Retry`` object.
        """
        if self.total is False and error:
            # Disabled, indicate to re-raise the error.
            raise six.reraise(type(error), error, _stacktrace)
    
        total = self.total
        if total is not None:
            total -= 1
    
        connect = self.connect
        read = self.read
        redirect = self.redirect
        status_count = self.status
        other = self.other
        cause = "unknown"
        status = None
        redirect_location = None
    
        if error and self._is_connection_error(error):
            # Connect retry?
            if connect is False:
                raise six.reraise(type(error), error, _stacktrace)
            elif connect is not None:
                connect -= 1
    
        elif error and self._is_read_error(error):
            # Read retry?
            if read is False or not self._is_method_retryable(method):
                raise six.reraise(type(error), error, _stacktrace)
            elif read is not None:
                read -= 1
    
        elif error:
            # Other retry?
            if other is not None:
                other -= 1
    
        elif response and response.get_redirect_location():
            # Redirect retry?
            if redirect is not None:
                redirect -= 1
            cause = "too many redirects"
            redirect_location = response.get_redirect_location()
            status = response.status
    
        else:
            # Incrementing because of a server error like a 500 in
            # status_forcelist and the given method is in the allowed_methods
            cause = ResponseError.GENERIC_ERROR
            if response and response.status:
                if status_count is not None:
                    status_count -= 1
                cause = ResponseError.SPECIFIC_ERROR.format(status_code=response.status)
                status = response.status
    
        history = self.history + (
            RequestHistory(method, url, error, status, redirect_location),
        )
    
        new_retry = self.new(
            total=total,
            connect=connect,
            read=read,
            redirect=redirect,
            status=status_count,
            other=other,
            history=history,
        )
    
        if new_retry.is_exhausted():
>           raise MaxRetryError(_pool, url, error or ResponseError(cause))
E           urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='www.baidu.com', port=443): Max retries exceeded with url: / (Caused by ProxyError('Your proxy appears to only use HTTP and not HTTPS, try changing your proxy URL to be HTTP. See: https://urllib3.readthedocs.io/en/1.26.x/advanced-usage.html#https-proxy-error-http-proxy', SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:997)'))))

C:Python310libsite-packagesurllib3utilretry.py:592: MaxRetryError

During handling of the above exception, another exception occurred:

    def test_play_list():
        # url = 'https://play.qiqiuyun.net/sdk_api/video/hls_stream/sd.m3u8?resNo=158c5436de284f3fbd030fd359f04657&token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJsZXZlbCI6InNkIiwicHJldmlldyI6bnVsbCwicGxheUF1ZGlvIjowLCJoZWFkIjpudWxsLCJza2lwIjpudWxsLCJubyI6IjE1OGM1NDM2ZGUyODRmM2ZiZDAzMGZkMzU5ZjA0NjU3IiwianRpIjoiYTM2YTYyMWEtNWJkYS00ZSIsInRpbWVzIjoxLCJleHAiOjE2NTE0OTU1MTksImVuY3J5cHQiOjIsIm5hdGl2ZSI6MCwiaGxzQ2xlZkVuY3J5cHRWZXJzaW9uIjozfQ.lROPARK_P93WvCJi87EK4kXBu28Pd3jKXObmY1uY89k&ssl=1'
        # http.headers = get_headers('bin.txt')
        # res = http.get(url)
        # print(res.text)
>       res = http.get("https://www.baidu.com")

test_hsl.py:49: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
C:Python310libsite-packagesrequestssessions.py:542: in get
    return self.request('GET', url, **kwargs)
C:Python310libsite-packagesrequestssessions.py:529: in request
    resp = self.send(prep, **send_kwargs)
C:Python310libsite-packagesrequestssessions.py:645: in send
    r = adapter.send(request, **kwargs)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = 
request = , stream = False
timeout = Timeout(connect=None, read=None, total=None), verify = False
cert = None
proxies = OrderedDict([('http', 'http://127.0.0.1:8888'), ('https', 'https://127.0.0.1:8888')])

    def send(self, request, stream=False, timeout=None, verify=True, cert=None, proxies=None):
        """Sends PreparedRequest object. Returns Response object.
    
        :param request: The :class:`PreparedRequest ` being sent.
        :param stream: (optional) Whether to stream the request content.
        :param timeout: (optional) How long to wait for the server to send
            data before giving up, as a float, or a :ref:`(connect timeout,
            read timeout) ` tuple.
        :type timeout: float or tuple or urllib3 Timeout object
        :param verify: (optional) Either a boolean, in which case it controls whether
            we verify the server's TLS certificate, or a string, in which case it
            must be a path to a CA bundle to use
        :param cert: (optional) Any user-provided SSL certificate to be trusted.
        :param proxies: (optional) The proxies dictionary to apply to the request.
        :rtype: requests.Response
        """
    
        try:
            conn = self.get_connection(request.url, proxies)
        except LocationValueError as e:
            raise InvalidURL(e, request=request)
    
        self.cert_verify(conn, request.url, verify, cert)
        url = self.request_url(request, proxies)
        self.add_headers(request, stream=stream, timeout=timeout, verify=verify, cert=cert, proxies=proxies)
    
        chunked = not (request.body is None or 'Content-Length' in request.headers)
    
        if isinstance(timeout, tuple):
            try:
                connect, read = timeout
                timeout = TimeoutSauce(connect=connect, read=read)
            except ValueError as e:
                # this may raise a string formatting error.
                err = ("Invalid timeout {}. Pass a (connect, read) "
                       "timeout tuple, or a single float to set "
                       "both timeouts to the same value".format(timeout))
                raise ValueError(err)
        elif isinstance(timeout, TimeoutSauce):
            pass
        else:
            timeout = TimeoutSauce(connect=timeout, read=timeout)
    
        try:
            if not chunked:
                resp = conn.urlopen(
                    method=request.method,
                    url=url,
                    body=request.body,
                    headers=request.headers,
                    redirect=False,
                    assert_same_host=False,
                    preload_content=False,
                    decode_content=False,
                    retries=self.max_retries,
                    timeout=timeout
                )
    
            # Send the request.
            else:
                if hasattr(conn, 'proxy_pool'):
                    conn = conn.proxy_pool
    
                low_conn = conn._get_conn(timeout=DEFAULT_POOL_TIMEOUT)
    
                try:
                    skip_host = 'Host' in request.headers
                    low_conn.putrequest(request.method,
                                        url,
                                        skip_accept_encoding=True,
                                        skip_host=skip_host)
    
                    for header, value in request.headers.items():
                        low_conn.putheader(header, value)
    
                    low_conn.endheaders()
    
                    for i in request.body:
                        low_conn.send(hex(len(i))[2:].encode('utf-8'))
                        low_conn.send(b'rn')
                        low_conn.send(i)
                        low_conn.send(b'rn')
                    low_conn.send(b'0rnrn')
    
                    # Receive the response from the server
                    try:
                        # For Python 2.7, use buffering of HTTP responses
                        r = low_conn.getresponse(buffering=True)
                    except TypeError:
                        # For compatibility with Python 3.3+
                        r = low_conn.getresponse()
    
                    resp = HTTPResponse.from_httplib(
                        r,
                        pool=conn,
                        connection=low_conn,
                        preload_content=False,
                        decode_content=False
                    )
                except:
                    # If we hit any problems here, clean up the connection.
                    # Then, reraise so that we can handle the actual exception.
                    low_conn.close()
                    raise
    
        except (ProtocolError, socket.error) as err:
            raise ConnectionError(err, request=request)
    
        except MaxRetryError as e:
            if isinstance(e.reason, ConnectTimeoutError):
                # TODO: Remove this in 3.0.0: see #2811
                if not isinstance(e.reason, NewConnectionError):
                    raise ConnectTimeout(e, request=request)
    
            if isinstance(e.reason, ResponseError):
                raise RetryError(e, request=request)
    
            if isinstance(e.reason, _ProxyError):
>               raise ProxyError(e, request=request)
E               requests.exceptions.ProxyError: HTTPSConnectionPool(host='www.baidu.com', port=443): Max retries exceeded with url: / (Caused by ProxyError('Your proxy appears to only use HTTP and not HTTPS, try changing your proxy URL to be HTTP. See: https://urllib3.readthedocs.io/en/1.26.x/advanced-usage.html#https-proxy-error-http-proxy', SSLError(SSLError(1, '[SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:997)'))))

C:Python310libsite-packagesrequestsadapters.py:513: ProxyError