Copy to clipboard using python

clipboard.py

import sys
import subprocess

def copy(string):
    commands = {'win32': 'clip',
                'cygwin': 'clip',
                'darwin': 'pbcopy',
    }

    currentPlatform = sys.platform
    if currentPlatform not in commands:
        raise KeyError('Platform not supported')
    copyCommand = commands[currentPlatform]
    subprocess.Popen([copyCommand], stdin=subprocess.PIPE, encoding='utf8').communicate(string)

if __name__ == '__main__':
    copy('testing the clipboard :)')