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These implementations are for demonstration purposes. They are less efficient than the implementations in the Python standard library.

如果一个条件为真，那么它 or 另一个条件无论真假，结果一定为真 如果一个条件为假，那么它 and 另一个条件无论真假，结果一定为假 根据已知条件已经可以确定整个逻辑表达式的结果时，就不再计算剩余表达式的值。 Python也是如此。 程序计算出 x ...

Department of Chemical and Biomolecular Engineering, Colburn Laboratory and Department of Materials Science and Engineering, University of Delaware, Newark, Delaware 19716, United States Article Views ...