我看到“：”是错误的，但我找不到解决方法。
ValueError: Invalid header name b':authority'
这是错误：
File "tmall.py", line 23, in get_url
response = sessions.get(url=url,headers =headers)
File "E:\python\lib\site-packages\requests\sessions.py", line 501, in get
return self.request('GET', url, **kwargs)
File "E:\python\lib\site-packages\requests\sessions.py", line 488, in request
resp = self.send(prep, **send_kwargs)
File "E:\python\lib\site-packages\requests\sessions.py", line 609, in send
r = adapter.send(request, **kwargs)
File "E:\python\lib\site-packages\requests\adapters.py", line 423, in send
timeout=timeout
File "E:\python\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 600, in urlopen
chunked=chunked)
File "E:\python\lib\site-packages\requests\packages\urllib3\connectionpool.py", line 356, in _make_request
conn.request(method, url, **httplib_request_kw)
File "E:\python\lib\http\client.py", line 1239, in request
self._send_request(method, url, body, headers, …