在转义了操作符后，它将像所有其他文字一样进行匹配。
After you escape the operator, it matches like any other literal.
如果是False，此文件描述符会在文件关闭后保留。
If False, the file descriptor is kept after the file is closed.
最后，再说个运算符**，它表示乘方，就是前一个数为底数，后一个数为指数的次幂运算。
Finally, the operator ** performs exponentiation; that is, it raises a number to a power.
拖到绘图页后，可以用作功能比较图的指示符。
Drag onto the page to use as indicators on a feature comparison chart.
后+ +符表达式的结果是个值而不是一个变量。
The result of the postfix increment expression is not a variable, but a value.
后+ +符表达式的结果是个值而不是一个变量。
The result of the postfix increment expression is not a variable, but a value.
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