Python Environment setup

Pyenv is a tool that can easily be toggled in multiple versions of Python


Official website: https://github.com/pyenv/pyenv

? Pyenv has the following features:
Make a global python version switch
Provide a Python version for a single project
Using environment variables allows you to rewrite the Python version
Ability to perform command searches between different versions at the same time
? Has the following characteristics:
Depends only on Python itself
Add directories to $path to use
Ability to perform VIRTUALENV management

Pyenv Installation Method
1 pyenv Installing Git
Yum Install Git-y
2 Python installation dependencies
Yum-y install gcc make patch gdbm-devel openssl-devel sqlite-devel readline-devel zlib-devel bzip2-devel
3 Creating a User Python
Useradd python
passwd python
4 signing in with a Python user
Curl-l Https://raw.githubusercontent.com/pyenv/pyenv-installer/master/bin/pyenv-installer | Bash
5 Modify the. bash_profile file in the home directory. When the user starts, the script in. Bash_profile is executed and the pyenv is started.
? Add to
0export path= "/home/python/.pyenv/bin: $PATH"
0eval "$ (pyenv init =)"
0eval "$ (pyenv virtualenv-init-)"
? Source
0source ~/.bash_profile
6 Viewing the Python version
? Python-v
7 pyenv function
? Pyenv Help Install
? Pyenv Install--list View installable version
? Pyenv Install 3.5.3-V View version 3.5.3 and view installation details
? Pyenv version View pyenv versions
? Pyenv versions view pyenv all versions
? PYENV Global 3.5.3 All windows that are logged in with a Python user are set (disabled)
? PYENV Global System
? Pyenv Shell 3.5.3 affects the current window only, session close setting ends
? Engineering
0mkdir mage/projects-p
0CD mage/projects
0pyenv local 3.5.3 Use 3.5.3 version under Mage/projects folder, subdirectory inherits Python version
0pyenv version View release information
? Create a separate virtual space using python3.5.3 *
0mkdir Mage/projects/web
0CD Mage/projects/web
0pyenv virtualenv 3.5.3 mage353 Setting the Web Directory virtual Environment version mage353
0pyenv local mage353 Set directory version
0pyenv versions View
? Understand:
0PENV Environmental Isolation
0VIRTUALENV Package Management
Pip
? PIP-V View Package Management directory
? PIP configuration file:
0mkdir. Pip
0CD. Pip
0vim pip.conf
§[global]
§index-url=https://mirrors.aliyun.com/pypi/simple/
§trusted-host=mirrors.aliyun.com
? Pip Install Redis
? Pip Install Ipython Editing Tool
? Pip Install Jupyter Web Edition Editing Tool

? Development environment and production environment package synchronization
0PIP Freeze > Requirement
0PIP install-r Requirement
? Pycharm
0https://www.jetbrains.com/pycharm/
? Python
0https://www.python.org/

? Python interpreter
0Cpython
0Ipython: Enhanced CPython
0pypy:python-Written interpreter
0Jython: The python source code is mutated into Java bytecode, running on the JVM
0IronPython:.

Python Environment setup