OSError：[Errno 13]安装virtualenv时权限被拒绝...

Question

我不明白为什么以下错误或如何修复它...任何帮助都会非常感激。 （请注意，这个问题与此one相似但不同。）

dhcp-18-41:WakeUp6 jbs$ sudo -H virtualenv -p 
/usr/local/Cellar/python@2/2.7.15 env
Password:
Running virtualenv with interpreter /usr/local/Cellar/python@2/2.7.15
Traceback (most recent call last):
  File "/usr/local/bin/virtualenv", line 11, in <module>
    sys.exit(main())
  File "/Library/Python/2.7/site-packages/virtualenv.py", line 665, in main
    popen = subprocess.Popen([interpreter, file] + sys.argv[1:], env=env)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 710, in __init__
errread, errwrite)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1335, in _execute_child
    raise child_exception
OSError: [Errno 13] Permission denied