Create virtual environments with virtualenv and Virtualenvwrapper virtual environment management tools

First, use virtualenv

1. Install virtualenv

pip install -i https://pypi.douban.com/simple/ --trusted-host pypi.douban.com virtualenv

2. Create a running environment

virtualenv [virtual environment name]virtualenv venv#If you don't want to use the system package, add the --no-site-packages parametervirtualenv --no-site-packages create pathname

3. Activate the environment

Under linux

$ source ./bin/activate

Under windows

 .\Scripts\activate.bat

4. Exit the environment

deactivate

5. Delete the environment

You can delete the venv folder directly to delete the environment

Second, use Virtualenvwrapper

Virtaulenvwrapper is an extension of virtualenv for easier managementVirtual Environment, it can do: - Integrate all virtual environments in one directory - Manage (add, delete, copy) virtual environment - quickly switch virtual environment

1. Installation

# under Windowspip install virtualenvwrapper-win# Under macOS / Linuxpip install --user virtualenvwrapper# load environment variablesecho "source virtualenvwrapper.sh" >> ~/.bashrcsource ~/.bashrc

2. Create a virtual environment

# under macOS/Linuxmkvirtualenv --python=python3.6 venv# under Windowsmkvirtualenv --python=python3 venv

3. Activate the virtual environment

workon #List the virtual environment listworkon [venv] #Switch environment

4. Exit the environment

deactivate

5. Delete the environment

rmvirtualenv venv