get-pip.py error

Collecting pip
  Using cached pip-6.0.3-py2.py3-none-any.whl
Installing collected packages: pip

  Exception:
  Traceback (most recent call last):
    File "/var/folders/53/d1q9qj6j0bg6kdnnvpy13hn80000gp/T/tmpENervc/pip.zip/pip/basecommand.py", line 215, in main
      status = self.run(options, args)
    File "/var/folders/53/d1q9qj6j0bg6kdnnvpy13hn80000gp/T/tmpENervc/pip.zip/pip/commands/install.py", line 347, in run
      root=options.root_path,
    File "/var/folders/53/d1q9qj6j0bg6kdnnvpy13hn80000gp/T/tmpENervc/pip.zip/pip/req/req_set.py", line 548, in install
      **kwargs
    File "/var/folders/53/d1q9qj6j0bg6kdnnvpy13hn80000gp/T/tmpENervc/pip.zip/pip/req/req_install.py", line 751, in install
      self.move_wheel_files(self.source_dir, root=root)
    File "/var/folders/53/d1q9qj6j0bg6kdnnvpy13hn80000gp/T/tmpENervc/pip.zip/pip/req/req_install.py", line 960, in move_wheel_files
      isolated=self.isolated,
    File "/var/folders/53/d1q9qj6j0bg6kdnnvpy13hn80000gp/T/tmpENervc/pip.zip/pip/wheel.py", line 234, in move_wheel_files
      clobber(source, lib_dir, True)
    File "/var/folders/53/d1q9qj6j0bg6kdnnvpy13hn80000gp/T/tmpENervc/pip.zip/pip/wheel.py", line 205, in clobber
      os.makedirs(destdir)
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 157, in makedirs
      mkdir(name, mode)
  OSError: [Errno 13] Permission denied: '/Library/Python/2.7/site-packages/pip

[dstufft]

You’re attempting to install to the system while you don’t have permissions to do so. You need to either use sudo get-pip.py or get-pip.py --user.

[pradyunsg]

should I use “–user” everytime I use pip for something?

Yep. 😃