pip vs pip3

[Skaperen]

here is the current error:

Output:
  File "/usr/local/bin/pip", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.5/dist-packages/pip/_internal/__init__.py", line 246, in main
    return command.main(cmd_args)
  File "/usr/local/lib/python3.5/dist-packages/pip/_internal/basecommand.py", line 228, in main
    status = self.run(options, args)
  File "/usr/local/lib/python3.5/dist-packages/pip/_internal/commands/list.py", line 152, in run
    self.output_package_listing(packages, options)
  File "/usr/local/lib/python3.5/dist-packages/pip/_internal/commands/list.py", line 242, in output_package_listing
    self.output_package_listing_columns(data, header)
  File "/usr/local/lib/python3.5/dist-packages/pip/_internal/commands/list.py", line 271, in output_package_listing_columns
    logger.info(val)
Message: 'zope.interface                4.3.2

i did the command pip list (same error for pip3 list) when i got the above error that now blames zope (i guess that's what it means). i have not searched around for this, yet.

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if you are on a system without pip or pip3, how do you install either for the very first time?