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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def delete(access_key):
 """ Delete an existing keypair. ACCESSKEY: ACCESSKEY for a keypair to delete. """

    with Session() as session:
        try:
            data = session.KeyPair.delete(access_key)
        except Exception as e:
            print_error(e)
            sys.exit(1)
        if not data['ok']:
            print_fail('KeyPair deletion has failed: {0}'.format(data['msg']))
            sys.exit(1)
        print('Key pair is deleted: ' + access_key + '.')