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

 

 

1 2 3 4 5 6 7 8

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

 

 

 

1 2 3 4 5 6 7 8

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