折腾：
［已解决］CentOS中退出了virtualenv之后如何再进入之前virtualenv
出现：
~ export WORKON_HOME=~/Envs ~ workon zsh: command not found: workon |
搜：
command not found: workon
参考：
linux – Virtualenv: workon command not found – Stack Overflow
virtualenvwrapper commands aren’t working – Stack Overflow
去：
vi .zshrc |
然后在最后加上：
export WORKON_HOME=$HOME/.virtualenvs source /usr/local/bin/virtualenvwrapper.sh |
然后再去让其生效：
~ source .zshrc virtualenvwrapper.user_scripts creating /root/.virtualenvs/premkproject virtualenvwrapper.user_scripts creating /root/.virtualenvs/postmkproject virtualenvwrapper.user_scripts creating /root/.virtualenvs/initialize virtualenvwrapper.user_scripts creating /root/.virtualenvs/premkvirtualenv virtualenvwrapper.user_scripts creating /root/.virtualenvs/postmkvirtualenv virtualenvwrapper.user_scripts creating /root/.virtualenvs/prermvirtualenv virtualenvwrapper.user_scripts creating /root/.virtualenvs/postrmvirtualenv virtualenvwrapper.user_scripts creating /root/.virtualenvs/predeactivate virtualenvwrapper.user_scripts creating /root/.virtualenvs/postdeactivate virtualenvwrapper.user_scripts creating /root/.virtualenvs/preactivate virtualenvwrapper.user_scripts creating /root/.virtualenvs/postactivate virtualenvwrapper.user_scripts creating /root/.virtualenvs/get_env_details |
然后就可以看到了workon了：
~ wor WORDCHARS work_in_progress workon WORKON_HOME ~ workon –help Usage: workon env_name Deactivate any currently activated virtualenv and activate the named environment, triggering any hooks in the process. workon Print a list of available environments. (See also lsvirtualenv -b) workon (-h|–help) Show this help message. workon (-c|–cd) envname After activating the environment, cd to the associated project directory if it is set. workon (-n|–no-cd) envname After activating the environment, do not cd to the associated project directory. |
但是发现去用workon列表是空的，且无法切换到我之前就创建好的虚拟环境中了：
~ workon ~ workon SIPEnvents ERROR: Environment ‘SIPEnvents’ does not exist. Create it with ‘mkvirtualenv SIPEnvents’. |
感觉是路径有误
所以去改为之前的：
#export WORKON_HOME=$HOME/.virtualenvs export WORKON_HOME=$HOME/Envs source /usr/local/bin/virtualenvwrapper.sh ~ source .zshrc |
然后就可以看到之前就创建好的虚拟环境了：
~ workon SIPEvents |
［总结］
之前安装好了virtualenvwrapper，但是找不到workon：
zsh: command not found: work
的原因是：
没有执行到对应的环境变量和脚本
解决办法是：
把对应的环境变量和脚本，放到当前帐号启动脚本中，确保每次都执行到，即可：
export WORKON_HOME=$HOME/Envs source /usr/local/bin/virtualenvwrapper.sh |
对于此处，设置好之后，无需重启bash终端，而可以通过source直接让其立刻生效：
source .zshrc |
注：
如果你是bash，则是：.bashrc
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