我最近重新安装了ubuntu并升级到16.04，无法使用python：

$ python manage.py runserver
Could not find platform independent libraries <prefix>
Could not find platform dependent libraries <exec_prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ImportError: No module named 'encodings'
Aborted

在这一点上，python本身不起作用

$ python
Could not find platform independent libraries <prefix>
Could not find platform dependent libraries <exec_prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ImportError: No module named 'encodings'
Aborted

甚至这个建议也不再起作用：

unset PYTHONHOME
unset PYTHONPATH

每当我用一种方式修复它时，它都会再次出现。有几个答案有助于暂时修复它，但不是永久性的。我已经重新安装了python和python3几次。我可以从这里做什么？谢谢