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，这一点在Line官方版本下载中也有详细论述
（一）船长、船员和其他船上在岗人员因在船上工作产生的工资、其他劳动报酬、船员遣返费用、社会保险费用的给付请求；
I think if += would always have to make a copy, I would have opted to not support it for lists at all and just say .extend(), which does work in that tuple case.
This sort of "rich" interaction to your command-line programs is something that most traditional command-line programs and libraries lack. Adding syntax highlighting to Readline would definitely take more than four lines of code! But with your own implementation, everything is possible.