[SOLVED] Having an Error installing Raspberry OpenCV

Issue

I am trying to install opencv on my raspberry pi 3b+ with python 3.5 but i keep getting the same error because of these files I didn't even edit.

pi@raspberrypi:~ $ mkvirtualenv cv
Using base prefix '/usr'
Traceback (most recent call last):
  File "/usr/local/bin/virtualenv", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.5/dist-packages/virtualenv.py", line 712, in main
    symlink=options.symlink)
  File "/usr/local/lib/python3.5/dist-packages/virtualenv.py", line 927, in create_environment
    site_packages=site_packages, clear=clear, symlink=symlink))
  File "/usr/local/lib/python3.5/dist-packages/virtualenv.py", line 1112, in install_python
    mkdir(lib_dir)
  File "/usr/local/lib/python3.5/dist-packages/virtualenv.py", line 324, in mkdir
    os.makedirs(path)
  File "/usr/lib/python3.5/os.py", line 231, in makedirs
    makedirs(head, mode, exist_ok)
  File "/usr/lib/python3.5/os.py", line 231, in makedirs
    makedirs(head, mode, exist_ok)
  File "/usr/lib/python3.5/os.py", line 241, in makedirs
    mkdir(name, mode)
PermissionError: [Errno 13] Permission denied: '/cv'

Thanks in advance

Solution

You have no permission to create directory at the / (root) directory. You can either

• use sudo mkvirtualenv cv, or
• export WORKON_HOME=~/.virtualenvs then mkvirtualenv cv

Answered By - yoonghm