Python's three major artifacts

There are many excellent packages in Python. This article mainly talks about pip, virtualenv, fabric

1. pip is used for package management

Documentation: https://pip.pypa.io/en/latest/installing.html

# Installation, you can specify the version number

(sudo) pip install Django==1.6.8

# Upgrade

(sudo) pip install bpython --upgrade

# Install multiple at one time

(sudo) pip install BeautifulSoup4 fabric virtualenv

# Install from the text, the text is the package name, one per line, you can specify the version number

(sudo) pip install –r requirements.txt

# Delete

(sudo) pip uninstall xlrd

# Export the currently installed package

pip freeze > requirements.txt

2. virtualenv independent Python environment management

Documentation: http://virtualenvwrapper .readthedocs.org/en/latest/

virtualenv is a package that creates a Python independent environment. virtualenvwrapper makes virtualenv easier to use

# Installation:

(sudo) pip install virtualenv virtualenvwrapper

# Modify .bash_profile and add the following statement

export WORKON_HOME=$HOME/.virtualenvs

export PROJECT_HOME=$HOME/YunPan/workspace

source /usr/local/bin/virtualenvwrapper.sh

mkvirtualenv ENV: Create a running environment ENV

rmvirtualenv ENV: Delete a running environment ENV

mkproject mic: Create a mic project and running environment mic

mktmpenv: Create a temporary running environment

workon bsp: Work in the bsp running environment

lsvirtualenv: Column List the available running environments

lssitepackages: List the packages installed in the current environment

The created environment is independent and does not interfere with each other. You can use pip to manage packages without sudo permissions.

The following is a usage demonstration diagram:

3. Fabric server management and application release

Official website: http://www.fabfile.org/

Documentation: http://docs.fabfile.org/

fabric: application deployment or systems administration tasks

#coding:utf-8

from fabric.api import *

# Server list

env.hosts = ['user@server1' ,'user2@server2']

def ls_home():

with cd('/home/bae/'):

run('ls')

'''

Commonly used Command

lcd(dir): Enter a directory on the local machine

local(cmd): Execute the command on the local machine

cd(dir): Enter a directory on the server

run(cmd): Execute the command on the server

''

Save the above file as fabfile.py Enter the directory of the file on the terminal and execute

fab function name

For example:

fab ls_home

Please refer to the official documentation for more usage methods.