python数组复制拷贝的实现方法

WBOY
Release: 2016-06-10 15:10:40
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本文实例讲述了python数组复制拷贝的实现方法。分享给大家供大家参考。具体分析如下:

python中直接通过等号赋值实际上只是引用地址的传递
如:

a = [1,2,3,4,5]
b=a

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当a的值改变时,b的值也会随之改变

如果希望b和a没有关系,可以通过下面的方法

a = [1,2,3,4,5]
b=a[:]

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这样a和b就是两个完全独立的数组,互相不会影响

希望本文所述对大家的Python程序设计有所帮助。

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