copy to clipboard ipython magic

clip_magic.py

"""
Add copy to clipboard from IPython!
To install, just copy it to your profile/startup directory, typically:

    ~/.ipython/profile_default/startup/

Example usage:

    %clip hello world
    # will store "hello world"
    a = [1, 2, 3]
    %clip a
    # will store "[1, 2, 3]"

You can also use it with cell magic

    In [1]: %%clip
       ...: Even multi
       ...: lines
       ...: work!
       ...:

If you don't have a variable named 'clip' you can rely on automagic:

    clip hey man
    a = [1, 2, 3]
    clip a

"""

import sys

if sys.platform == 'darwin':
    from AppKit import NSPasteboard, NSArray
elif sys.platform.startswith('linux'):
    from subprocess import Popen, PIPE
else:
    raise ImportError("Clip magic only works on osx or linux!")

from IPython.core.magic import register_line_cell_magic

def _copy_to_clipboard(arg):
    arg = str(globals().get(arg) or arg)

    if sys.platform == 'darwin':
        pb = NSPasteboard.generalPasteboard()
        pb.clearContents()
        a = NSArray.arrayWithObject_(arg)
        pb.writeObjects_(a)
    elif sys.platform.startswith('linux'):
        p = Popen(['xsel', '-pi'], stdin=PIPE)
        p.communicate(input=arg)

    print ('Copied to clipboard!')


@register_line_cell_magic
def clip(line, cell=None):
    if line and cell:
        cell = '\n'.join((line, cell))

    _copy_to_clipboard(cell or line)

# We delete it to avoid name conflicts for automagic to work
del clip

Just to note that for most cases following alias will be enough:
alias ck echo "$$_" | pbcopy

Blast from the past - I just went searching for "how to setup a copy-to-clipboard in IPython like I used to have...and found this, with my previous comments". Thanks to other contributors for their updates too. I'll just verify that using this with my suggestions above on Linux, works for Python 3.11 with IPython 8.10. xsel needs to be installed as a system package and -ib is a better choice on Linux.