Python Learning notes-using PIP to install modules

We often need to install a variety of modules when using Python, and Pip is a very powerful module installation tool, similar to the Linux yum, the installation of modules can automatically resolve dependencies, etc., summarized as follows:

First, install PIP:

PIP is installed automatically when you install Python

Second, use PIP:

1. Upgrade Pip

　　　　python-m pip Install--upgrade pip

2. Installation Module

　　　　pip install gevent #安装指定模块

　　　　pip install-r requirements.txt # List of modules defined in the installation requirements.txt file

Third, change the PIP source

When the PIP installs the third party module, the default from the Python official module library: https://pypi.python.org download, but due to often blocked by the firewall or slow download, and so on, so need to replace the next domestic mirror

There are many sources available on the web, such as

Watercress: http://pypi.douban.com/simple/
Tsinghua: Https://pypi.tuna.tsinghua.edu.cn/simple

Recently used more and more handy is Tsinghua University's PIP source, it is the image of the official website PyPI, every 5 minutes synchronization, the address is https://pypi.tuna.tsinghua.edu.cn/simple

1. Temporary use:

You can add the parameter-I https://pypi.tuna.tsinghua.edu.cn/simple when using PIP

For example: Pip install-i https://pypi.tuna.tsinghua.edu.cn/simple gevent, this will be from the Tsinghua side of the mirror to install the Gevent library.

2, permanent modification, once and for all :

Under Linux, modify the ~/.pip/pip.conf (without creating one), modify Index-url to tuna, and read as follows:

[Global]
Index-url = Https://pypi.tuna.tsinghua.edu.cn/simple

Under Windows, create a PIP directory directly in the user directory, such as: C:\Users\xx\pip, new file Pip.ini, the following

[Global]
Index-url = Https://pypi.tuna.tsinghua.edu.cn/simple

　　　　

Python Learning notes-using PIP to install modules