virtualenvwrapper

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1. 安装virtualenv
sudo pip install virtualenv
2. 安装virtualenvwrapper
sudo pip install virtualenvwrapper

默认会将virtualenvwrapper安装到/usr/local/bin目录下,需要在用户的.bsharc文件中增加如下配置:

  1.  
    # 1. Create a directory to hold the virtual environments.
  2.  
    # (mkdir $HOME/.virtualenvs).
  3.  
    # 2. Add a line like "export WORKON_HOME=$HOME/.virtualenvs"
  4.  
    # to your .bashrc.
  5.  
    # 3. Add a line like "source /path/to/this/file/virtualenvwrapper.sh"
  6.  
    # to your .bashrc.
  7.  
    # 4. Run: source ~/.bashrc
  8.  
    # 5. Run: workon
  9.  
    # 6. A list of environments, empty, is printed.
  10.  
    # 7. Run: mkvirtualenv temp
  11.  
    # 8. Run: workon
  12.  
    # 9. This time, the "temp" environment is included.
  13.  
    # 10. Run: workon temp
  14.  
    # 11. The virtual environment is activated.

根据步骤,当运行source ./.bashrc报错:

  1.  
    /usr/bin/python: No module named virtualenvwrapper
  2.  
    virtualenvwrapper.sh: There was a problem running the initialization hooks.
  3.  
    If Python could not import the module virtualenvwrapper.hook_loader,
  4.  
    check that virtualenvwrapper has been installed for
  5.  
    VIRTUALENVWRAPPER_PYTHON=/usr/bin/python and that PATH is
  6.  
    set properly.

错误原因:Ubuntu安装了2.7和3.x两个版本的python,在安装时使用的是sudo pip3 install virtualenvwrapper
在我运行的时候默认使用的是python2.x,但在python2.x中不存在对应的模块。(virtualenvwrapper.sh文件内容如下:):

  1.  
    # Locate the global Python where virtualenvwrapper is installed.
  2.  
    if [ "$VIRTUALENVWRAPPER_PYTHON" = "" ] then
  3.  
    VIRTUALENVWRAPPER_PYTHON="$(command which python)"
  4.  
    fi

 

当不存在VIRTUALENVWRAPPER_PYTHON环境时,会默认选择使用which python(我这里默认是python2),

所以需要增加此环境变量:

 

VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3






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