Virtualenv and pipenv installation

One virtualenv install windows edition

1 install

(1)、pip install virtualenv
(2)、pip install virtualenvwrapper-win
(3)、 Just find a plate , Create a directory to store the virtual environment , The directory name is .env perhaps .virtualenv . There is an English full stop in front
(4)、 Add environment variables Variable name WORKON_HOME , value The complete directory created for the previous step

2 virtualenv Use

(1) 、 workon See how many virtual environments there are , The name of the virtual environment that has been created will be listed
(2)、workon+ Name of the environment , Enter the virtual environment
(3)、 Creating a virtual environment ,kmvirtualenv -p python name The name of the virtual environment . Will be in .virtualenv Create a virtual environment under the directory
(4)、 Delete virtual environment ,rm The name of the virtual environment
(5)、pip install + Package name After entering the virtual environment , Use this command to complete the package installation
(6)、pip uninstall + Package name A Uninstall package . It should be noted that , If this bag A And dependent packages B,C,D, Then it will only uninstall A,B,C,D. So use virtuallenv Manage virtual environments , There will be residues when uninstalling . To solve this problem , have access to pipenv

Two install pipenv

1、pip install pipenv

This command is installed , Configure environment variables
pipenv utilize prefile and prefile.lock Record the dependency information of the package

2、 Use pipenv Management package

(1) pipenv install There are many functions
1) pipenv install There is no bag in the back / Module name stay Current directory Create a virtual environment under . After creation , Two files will be generated in the current directory prefile and prefile.lock

prefile  In file , Need to put url  Change to domestic python Source 

dev-packages  Record the packages installed in the development environment    Record  pipenv install  Package name  --dev

packages  Record installation package     Record  pipenv install  Package name     Installation of the package 

requires  Record python edition 

pipenv and virtualenv Creating a virtual environment is different .pipenv Is to create the virtual environment to the current path , So when creating , It needs to be done first cd To the right path , Then create ;virtualenv establish , No matter in that path , After creation, they are all in .virtualenv Below directory
2) Install modules or packages in the virtual environment pipenv install Module name / Package name
3) Restore the virtual environment pipenv install Automatic installation prefile In file packages, Will not install dev-pakcages
4) recovery dev-packages pipenv install --dev
(2) View the dependencies of the virtual environment Enter the directory of the virtual environment first , Then input pipenv graph
(3)pipenv uninstall A Uninstall packages in the virtual environment . It should be noted that ,A Will be unloaded , however A The dependency of will not be unloaded . uninstall A when , Will delete prefile and prefile.lock Medium A, So if the project is cloned and restored , Will not recover A And A Dependence