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Pythonenumerate遍历数组应用

遍历数组的python代码

其他语言中,比如C#,我们通常遍历数组是的方法是:


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--> for ( int i = 0 ; i < list.Length; i ++ )
{
// todo with list[i]
}


在Python中,我们习惯这样遍历:


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--> for item in sequence:
process(item)


这样遍历取不到item的序号i,所有就有了下面的遍历方法:


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--> for index in range(len(sequence)):
process(sequence[index])


其实,如果你了解内置的enumerate函数,还可以这样写:


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--> for index, item in enumerate(sequence):
process(index, item)

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