将pip升级您正在使用pip版本7.1.2到版本8.1.2

Question

Hi I am trying to upgrade my pip version to 8.1.2 this command does not work: pip install --upgrade pip

And I also tried to get it directly from the github directory, like explained here https://github.com/pypa/pip/archive/8.1.1.zip but then i get the following error:

Checking .pth file support in /Library/Python/2.7/site-packages/
error: can't create or remove files in install directory

The following error occurred while trying to add or remove files in the
installation directory:

    [Errno 13] Permission denied: '/Library/Python/2.7/site-packages/test-easy-install-21442.pth'

The installation directory you specified (via --install-dir, --prefix, or
the distutils default setting) was:

    /Library/Python/2.7/site-packages/

Perhaps your account does not have write access to this directory?  If the
installation directory is a system-owned directory, you may need to sign in
as the administrator or "root" account.  If you do not have administrative
access to this machine, you may wish to choose a different installation
directory, preferably one that is listed in your PYTHONPATH environment
variable.

For information on other options, you may wish to consult the
documentation at:

  https://pythonhosted.org/setuptools/easy_install.html

Please make the appropriate changes for your system and try again.

I m working on a Mac btw

Answer 1

尝试以管理员身份打开命令提示符，然后尝试升级它，应该可以。

Answer 2

Your problem is that your user doesn't have write privileges to the /Library/Python/2.7/site-packages directory. That is what it means by [Errno 13] Permission denied

Try running the command with sudo prefixing the original command. Sudo allows you to safely run programs as root. You will need to type your password at the prompt.

Answer 3

You can follow it up with:

pip install -U pip
sudo !!

This has the same effect as:

sudo pip install -U pip

Or even better, move away from OS X's Python install, and instead install Python / pip via Homebrew :

brew install python
brew install python3