def __init__(self, args, signum, expected_sig=None, cmd_err=None):
        # XXX: might be nicer to join args together.
        # We should ideally perform some quoting, then, however
        msg = (signum,) % 'was terminated by signal %s'
        CmdFailedError.__init__(self, args, msg, cmd_err)
        self.signal = signum
        self.expectedSignal = expected_sig
dataset/ETHPy150Open facebookarchive/git-review/src/gitreview/proc.py/CmdTerminatedError.__init__/swapped operands of `%`