python遍历数组的两种方法

第一种，最常用的，通过for in遍历数组

colours = ["red","green","blue"]for colour in colours:    print colour# red# green# blue

第二种，先获得数组的长度，然后根据索引号遍历数组，同时输出索引号

colours = ["red","green","blue"]for i in range(0, len(colours)):    print i, colour[i]# 0 red# 1 green# 2 blue