Win+r cmd opens the command line and enters pip install numpy to install the python library
What should I do if the download speed of pip installation Python library is too slow?
1. We can change the download source, the fastest and easiest way is to add parameters when downloading
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple library name
The source of Tsinghua University is used here, of course, other sources can also be selected, for example:
Alibaba Cloud: http://mirrors.aliyun.com/pypi/simple/
Douban: http://pypi.douban.com/simple/
……
2. If you don't want to copy the parameter installation every time, here is also a once-for-all solution:
Find the user directory of Windows, and create a pip.ini folder in the user directory, for example: C:\Users\xxx\pip.ini Linux is in /home/hadoop/.pip/pip.conf
Enter the following:
[global]
trusted-host=mirrors.aliyun.com
index-url=http://mirrors.aliyun.com/pypi/simple/
Here is the download source of Alibaba Cloud. If you want to change the source, just change the url.
Question 2: An error occurred while installing the package
ERROR: Cannot unpack file /tmp/pip-unpack-Bi5DIM/simple.html (downloaded from /tmp/pip-req-build-EOP5t7, content-type: text/html); cannot detect archive format
ERROR: Cannot determine archive format of /tmp/pip-req-build-EOP5t7
Solution: Use the command pip install -i https://pypi.tuna.tsinghua.edu.cn/simple --trusted-host pypi.tuna.tsinghua.edu.cn to solve the problem
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple --trusted-host pypi.tuna.tsinghua.edu.cn 包名