在deepin20种使用virtualenv创建虚拟环境

前面有章节已经使用pip安装完virtualenv的环境了，那么我们怎么使用virtualenv创建虚拟环境呢？

1. 创建python2版本的虚拟环境，直接使用virtualenv testpython2

zhj001@zhj001-PC:~$ virtualenv testpython2
created virtual environment CPython2.7.16.final.0-64 in 279ms
  creator CPython2Posix(dest=/home/zhj001/testpython2, clear=False, no_vcs_ignore=False, global=False)
  seeder FromAppData(download=False, pip=bundle, wheel=bundle, setuptools=bundle, via=copy, app_data_dir=/home/zhj001/.local/share/virtualenv)
    added seed packages: pip==20.3.4, setuptools==44.1.1, wheel==0.36.2
  activators PythonActivator,CShellActivator,FishActivator,PowerShellActivator,BashActivator
zhj001@zhj001-PC:~$ 

• 进入虚拟环境

zhj001@zhj001-PC:~$ cd testpython2/bin/
zhj001@zhj001-PC:~/testpython2/bin$ source activate
(testpython2) zhj001@zhj001-PC:~/testpython2/bin$ 
(testpython2) zhj001@zhj001-PC:~/testpython2/bin$ 

从中，可以看出来有小括号，表示已经进入虚拟环境

• 退出虚拟环境

(testpython2) zhj001@zhj001-PC:~/testpython2/bin$ deactivate 
zhj001@zhj001-PC:~/testpython2/bin$ 

2.创建python3版本的虚拟环境；

zhj001@zhj001-PC:~$ virtualenv -p python3 testpython3
created virtual environment CPython3.7.3.final.0-64 in 266ms
  creator CPython3Posix(dest=/home/zhj001/testpython3, clear=False, no_vcs_ignore=False, global=False)
  seeder FromAppData(download=False, pip=bundle, wheel=bundle, setuptools=bundle, via=copy, app_data_dir=/home/zhj001/.local/share/virtualenv)
    added seed packages: pip==21.1.2, setuptools==57.0.0, wheel==0.36.2
  activators PythonActivator,FishActivator,XonshActivator,CShellActivator,PowerShellActivator,BashActivator

• 进入虚拟环境步骤和python2步骤一样。