python安装requests库pip不是_python pip安装requests时报错，怎么解决？

问题

D:\Python>pip install --allow-all-external requests

DEPRECATION: --allow-all-external has been deprecated and will be removed in the future. Due to changes in the repository protocol, it no longer has any effect.

Collecting requests

Downloading requests-2.12.4-py2.py3-none-any.whl (576kB)

39% |████████████▌ | 225kB 6.1kB/s eta 0:00:58Exception:

Traceback (most recent call last):

File "d:\python\lib\site-packages\pip\_vendor\requests\packages\urllib3\response.py", line 232, in _error_catcher

yield

File "d:\python\lib\site-packages\pip\_vendor\requests\packages\urllib3\response.py", line 314, in read

data = self._fp.read(amt)

File "d:\python\lib\site-packages\pip\_vendor\cachecontrol\filewrapper.py", line 60, in read

data = self.__fp.read(amt)

File "d:\python\lib\http\client.py", line 449, in read

n = self.readinto(b)

File "d:\python\lib\http\client.py", line 493, in readinto

n = self.fp.readinto(b)

File "d:\python\lib\socket.py", line 586, in readinto

return self._sock.recv_into(b)

File "d:\python\lib\ssl.py", line 1002, in recv_into

return self.read(nbytes, buffer)

File "d:\python\lib\ssl.py", line 865, in read

return self._sslobj.read(len, buffer)

File "d:\python\lib\ssl.py", line 625, in read

v = self._sslobj.read(len, buffer)

socket.timeout: The read operation timed out

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

File "d:\python\lib\site-packages\pip\basecommand.py", line 215, in main

status = self.run(options, args)

File "d:\python\lib\site-packages\pip\commands\install.py", line 324, in run

requirement_set.prepare_files(finder)

File "d:\python\lib\site-packages\pip\req\req_set.py", line 380, in prepare_files

ignore_dependencies=self.ignore_dependencies))

File "d:\python\lib\site-packages\pip\req\req_set.py", line 620, in _prepare_file

session=self.session, hashes=hashes)

File "d:\python\lib\site-packages\pip\download.py", line 821, in unpack_url

hashes=hashes

File "d:\python\lib\site-packages\pip\download.py", line 659, in unpack_http_url

hashes)

File "d:\python\lib\site-packages\pip\download.py", line 882, in _download_http_url

_download_url(resp, link, content_file, hashes)

File "d:\python\lib\site-packages\pip\download.py", line 603, in _download_url

hashes.check_against_chunks(downloaded_chunks)

File "d:\python\lib\site-packages\pip\utils\hashes.py", line 46, in check_against_chunks

for chunk in chunks:

File "d:\python\lib\site-packages\pip\download.py", line 571, in written_chunks

for chunk in chunks:

File "d:\python\lib\site-packages\pip\utils\ui.py", line 139, in iter

for x in it:

File "d:\python\lib\site-packages\pip\download.py", line 560, in resp_read

decode_content=False):

File "d:\python\lib\site-packages\pip\_vendor\requests\packages\urllib3\response.py", line 357, in stream

data = self.read(amt=amt, decode_content=decode_content)

File "d:\python\lib\site-packages\pip\_vendor\requests\packages\urllib3\response.py", line 324, in read

flush_decoder = True

File "d:\python\lib\contextlib.py", line 100, in __exit__

self.gen.throw(type, value, traceback)

File "d:\python\lib\site-packages\pip\_vendor\requests\packages\urllib3\response.py", line 237, in _error_catcher

raise ReadTimeoutError(self._pool, None, 'Read timed out.')

pip._vendor.requests.packages.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='pypi.python.org', port=443): Read timed out.

解决方案

换一个国内的更新源吧：

pip install requests -i http://pypi.douban.com/simple --trusted-host=pypi.douban.com

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