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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 posttrans_hook(conduit):
 """ Hook after the package installation transaction. :param conduit: :return: """

    # Integrate Yum with Salt
    if 'SALT_RUNNING' not in os.environ:
        with open(CK_PATH, 'w') as ck_fh:
            ck_fh.write('{chksum} {mtime}\n'.format(chksum=_get_checksum(), mtime=_get_mtime()))