Install the Python virtual environment under Windows

1. Install VirtualEnvWrapper

Install the command, Windows system, run in the non-scripts directory

PIP install VirtualEnvWrapper-Win PIP uninstall VirtualEnvWrapper-Win

2. Configure the installation path of the virtual environment (power down and restart after completion) :

3. Operation of virtual environment:

Creating a virtual environment


mkvirtualenv virtualenv_name


Will automatically switch to the created virtual environment


Switch to a virtual environment


workon other_virtualenv_name


Exit the current virtual environment


deactivate


Delete a virtual environment


rmvirtualenv virtualenv_name


List all virtual environments


lsvirtualenv


Switch to the directory of the virtual environment


cdvirtualenv


Specify the Python version when creating the virtual environment


When using MKVirtualEnv, you can specify a — Python argument to specify a specific Python path


mkvirtualenv –python==C:python37python.exe virtualenv_name


The PIP List lists the dependent packages of all the PIP installations in the current virtual environment

Workon checks the directory file inside the wrapper:

5. Install the toolkit in a virtual environment:

PIP install scrapy -i https://pypi.douban.com/simple (use the douban source)