python 安装第三方库，超时报错--Read timed out.（亲测有效）
参考自：https://www.cnblogs.com/xiaoduc-org/p/5958973.html
1、报错如下：
Collecting keras
Using cached https://files.pythonhosted.org/packages/5e/10/aa32dad071ce52b5502266b5c659451cfd6ffcbf14e6c8c4f16c0ff5aaab/Keras-2.2.4-py2.py3-none-any.whl
Requirement already satisfied: six>=1.9.0 in d:\pyprojects\dsj\venv\lib\site-packages (from keras)
Collecting pyyaml (from keras)
Using cached https://files.pythonhosted.org/packages/71/f7/5513e0982417c0a497b5194cc975831755447ab5e64c5fe4c877c1706a7a/PyYAML-5.1.1-cp36-cp36m-win_amd64.whl
Requirement already satisfied: numpy>=1.9.1 in d:\pyprojects\dsj\venv\lib\site-packages (from keras)
Collecting keras-preprocessing>=1.0.5 (from keras)
Using cached https://files.pythonhosted.org/packages/28/6a/8c1f62c37212d9fc441a7e26736df51ce6f0e38455816445471f10da4f0a/Keras_Preprocessing-1.1.0-py2.py3-none-any.whl
Collecting keras-applications>=1.0.6 (from keras)
Using cached https://files.pythonhosted.org/packages/71/e3/19762fdfc62877ae9102edf6342d71b28fbfd9dea3d2f96a882ce099b03f/Keras_Applications-1.0.8-py3-none-any.whl
Requirement already satisfied: scipy>=0.14 in d:\pyprojects\dsj\venv\lib\site-packages (from keras)
Collecting h5py (from keras)
Downloading https://files.pythonhosted.org/packages/01/1e/115c4403544a91001d9c618748b2e8786db45544e36b8a6cf3c525e9b57f/h5py-2.9.0-cp36-cp36m-win_amd64.whl (2.4MB)
6% |██ | 153kB 9.5kB/s eta 0:03:55Exception:
Traceback (most recent call last):
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\_vendor\urllib3\response.py", line 302, in _error_catcher
yield
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\_vendor\urllib3\response.py", line 384, in read
data = self._fp.read(amt)
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\_vendor\cachecontrol\filewrapper.py", line 60, in read
data = self.__fp.read(amt)
File "D:\devSoft\Python36\lib\http\client.py", line 449, in read
n = self.readinto(b)
File "D:\devSoft\Python36\lib\http\client.py", line 493, in readinto
n = self.fp.readinto(b)
File "D:\devSoft\Python36\lib\socket.py", line 586, in readinto
return self._sock.recv_into(b)
File "D:\devSoft\Python36\lib\ssl.py", line 1009, in recv_into
return self.read(nbytes, buffer)
File "D:\devSoft\Python36\lib\ssl.py", line 871, in read
return self._sslobj.read(len, buffer)
File "D:\devSoft\Python36\lib\ssl.py", line 631, 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:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\basecommand.py", line 215, in main
status = self.run(options, args)
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\commands\install.py", line 324, in run
requirement_set.prepare_files(finder)
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\req\req_set.py", line 380, in prepare_files
ignore_dependencies=self.ignore_dependencies))
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\req\req_set.py", line 620, in _prepare_file
session=self.session, hashes=hashes)
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\download.py", line 821, in unpack_url
hashes=hashes
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\download.py", line 659, in unpack_http_url
hashes)
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\download.py", line 882, in _download_http_url
_download_url(resp, link, content_file, hashes)
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\download.py", line 603, in _download_url
hashes.check_against_chunks(downloaded_chunks)
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\utils\hashes.py", line 46, in check_against_chunks
for chunk in chunks:
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\download.py", line 571, in written_chunks
for chunk in chunks:
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\utils\ui.py", line 139, in iter
for x in it:
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\download.py", line 560, in resp_read
decode_content=False):
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\_vendor\urllib3\response.py", line 436, in stream
data = self.read(amt=amt, decode_content=decode_content)
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\_vendor\urllib3\response.py", line 401, in read
raise IncompleteRead(self._fp_bytes_read, self.length_remaining)
File "D:\devSoft\Python36\lib\contextlib.py", line 99, in __exit__
self.gen.throw(type, value, traceback)
File "D:\pyProjects\dsj\venv\lib\site-packages\pip-9.0.3-py3.6.egg\pip\_vendor\urllib3\response.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.
2、解决方法：
1）cmd， cd到项目所在文件的Scripts目录，我的目录如下图：
2）设置超时时间
pip --default-timeout=100 install -U Pillow
3）在重新执行pip install xxx （xxx为你需要安装的包名称）
