pip安装新的模块时出现read time out

现象：使用pip安装时出现如下错误：

Traceback (most recent call last):

File "d:\anaconda 3\lib\site-packages\pip\_vendor\urllib3\response.py", line 425, in _error_catcher

yield

File "d:\anaconda 3\lib\site-packages\pip\_vendor\urllib3\response.py", line 507, in read

data = self._fp.read(amt) if not fp_closed else b""

File "d:\anaconda 3\lib\site-packages\pip\_vendor\cachecontrol\filewrapper.py", line 62, in read

data = self.__fp.read(amt)

File "d:\anaconda 3\lib\http\client.py", line 447, in read

n = self.readinto(b)

File "d:\anaconda 3\lib\http\client.py", line 491, in readinto

n = self.fp.readinto(b)

File "d:\anaconda 3\lib\socket.py", line 589, in readinto

return self._sock.recv_into(b)

File "d:\anaconda 3\lib\ssl.py", line 1049, in recv_into

return self.read(nbytes, buffer)

File "d:\anaconda 3\lib\ssl.py", line 908, in read

return 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:\anaconda 3\lib\site-packages\pip\_internal\cli\base_command.py", line 188, in _main

status = self.run(options, args)

File "d:\anaconda 3\lib\site-packages\pip\_internal\cli\req_command.py", line 185, in wrapper

return func(self, options, args)

File "d:\anaconda 3\lib\site-packages\pip\_internal\commands\install.py", line 333, in run

reqs, check_supported_wheels=not options.target_dir

File "d:\anaconda 3\lib\site-packages\pip\_internal\resolution\legacy\resolver.py", line 179, in resolve

discovered_reqs.extend(self._resolve_one(requirement_set, req))

File "d:\anaconda 3\lib\site-packages\pip\_internal\resolution\legacy\resolver.py", line 362, in _resolve_one

abstract_dist = self._get_abstract_dist_for(req_to_install)

File "d:\anaconda 3\lib\site-packages\pip\_internal\resolution\legacy\resolver.py", line 314, in _get_abstract_dist_for

abstract_dist = self.preparer.prepare_linked_requirement(req)

File "d:\anaconda 3\lib\site-packages\pip\_internal\operations\prepare.py", line 469, in prepare_linked_requirement

hashes=hashes,

File "d:\anaconda 3\lib\site-packages\pip\_internal\operations\prepare.py", line 259, in unpack_url

hashes=hashes,

File "d:\anaconda 3\lib\site-packages\pip\_internal\operations\prepare.py", line 130, in get_http_url

link, downloader, temp_dir.path, hashes

File "d:\anaconda 3\lib\site-packages\pip\_internal\operations\prepare.py", line 281, in _download_http_url

for chunk in download.chunks:

File "d:\anaconda 3\lib\site-packages\pip\_internal\cli\progress_bars.py", line 166, in iter

for x in it:

File "d:\anaconda 3\lib\site-packages\pip\_internal\network\utils.py", line 39, in response_chunks

decode_content=False,

File "d:\anaconda 3\lib\site-packages\pip\_vendor\urllib3\response.py", line 564, in stream

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

File "d:\anaconda 3\lib\site-packages\pip\_vendor\urllib3\response.py", line 529, in read

raise IncompleteRead(self._fp_bytes_read, self.length_remaining)

File "d:\anaconda 3\lib\contextlib.py", line 130, in __exit__

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

File "d:\anaconda 3\lib\site-packages\pip\_vendor\urllib3\response.py", line 430, in _error_catcher

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

pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='pypi.tuna.tsinghua.edu.cn', port=443): Read timed out.

原因：由于频繁访问网站或请求造成的，可以通过更换国内源的方法来解决此问题。

解决：

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

附加几个国内常用镜像：

中国科技大学 https://pypi.mirrors.ustc.edu.cn/simple/

清华大学 https://pypi.tuna.tsinghua.edu.cn/simple/

阿里云 http://mirrors.aliyun.com/pypi/simple/

中国科学技术大学 http://pypi.mirrors.ustc.edu.cn/simple/

豆瓣(douban) http://pypi.douban.com/simple/