pip install 安装第三方库报错

Traceback (most recent call last):
File "F:Python3pythonlibsite-packagespip\_vendorurllib3 esponse.py", line 302, in _error_catcher
yield
File "F:Python3pythonlibsite-packagespip\_vendorurllib3 esponse.py", line 384, in read
data = self._fp.read(amt)
File "F:Python3pythonlibsite-packagespip\_vendorcachecontrolfilewrapper.py", line 60, in read
data = self.__fp.read(amt)
File "F:Python3pythonlibhttpclient.py", line 447, in read
n = self.readinto(b)
File "F:Python3pythonlibhttpclient.py", line 491, in readinto
n = self.fp.readinto(b)
File "F:Python3pythonlibsocket.py", line 589, in readinto
return self._sock.recv_into(b)
File "F:Python3pythonlibssl.py", line 1052, in recv_into
return self.read(nbytes, buffer)
File "F:Python3pythonlibssl.py", line 911, 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 "F:Python3pythonlibsite-packagespip\_internalasecommand.py", line 228, in main
status = self.run(options, args)
File "F:Python3pythonlibsite-packagespip\_internalcommandsinstall.py", line 291, in run
resolver.resolve(requirement_set)
File "F:Python3pythonlibsite-packagespip\_internal esolve.py", line 103, in resolve
self._resolve_one(requirement_set, req)
File "F:Python3pythonlibsite-packagespip\_internal esolve.py", line 257, in _resolve_one
abstract_dist = self._get_abstract_dist_for(req_to_install)
File "F:Python3pythonlibsite-packagespip\_internal esolve.py", line 210, in _get_abstract_dist_for
self.require_hashes
File "F:Python3pythonlibsite-packagespip\_internaloperationsprepare.py", line 310, in prepare_linked_requirement
progress_bar=self.progress_bar
File "F:Python3pythonlibsite-packagespip\_internaldownload.py", line 837, in unpack_url
progress_bar=progress_bar
File "F:Python3pythonlibsite-packagespip\_internaldownload.py", line 674, in unpack_http_url
progress_bar)
File "F:Python3pythonlibsite-packagespip\_internaldownload.py", line 898, in _download_http_url
_download_url(resp, link, content_file, hashes, progress_bar)
File "F:Python3pythonlibsite-packagespip\_internaldownload.py", line 618, in _download_url
hashes.check_against_chunks(downloaded_chunks)
File "F:Python3pythonlibsite-packagespip\_internalutilshashes.py", line 48, in check_against_chunks
for chunk in chunks:
File "F:Python3pythonlibsite-packagespip\_internaldownload.py", line 586, in written_chunks
for chunk in chunks:
File "F:Python3pythonlibsite-packagespip\_internalutilsui.py", line 159, in iter
for x in it:
File "F:Python3pythonlibsite-packagespip\_internaldownload.py", line 575, in resp_read
decode_content=False):
File "F:Python3pythonlibsite-packagespip\_vendorurllib3 esponse.py", line 436, in stream
data = self.read(amt=amt, decode_content=decode_content)
File "F:Python3pythonlibsite-packagespip\_vendorurllib3 esponse.py", line 401, in read
raise IncompleteRead(self._fp_bytes_read, self.length_remaining)
File "F:Python3pythonlibcontextlib.py", line 130, in __exit__
self.gen.throw(type, value, traceback)
File "F:Python3pythonlibsite-packagespip\_vendorurllib3 esponse.py", line 307, in _error_catcher
raise ReadTimeoutError(self._pool, None, 'Read timed out.')
pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
You are using pip version 19.0.3, however version 20.0.2 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

方案一：

设置延迟时间

命令：pip --default-timeout=100 install XXX 

方案三：

在pip安装路径下，创建python文件（.py）

import os  
ini="""[global] 
index-url = https://pypi.doubanio.com/simple/ 
[install] 
trusted-host=pypi.doubanio.com 
""" 
pippath=os.environ["USERPROFILE"]+"\pip\" 

if not os.path.exists(pippath):  
    os.mkdir(pippath)  
with open(pippath+"pip.ini","w+") as f:  
    f.write(ini)  

在cmd上运行这个python文件，之后再用pip install命令安装速度非常快。