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
colours = ["red","green","blue"]
for i in range(0, len(colours)):
print i, colour[i]
# 0 red
# 1 green
# 2 blue原文：http://blog.csdn.net/wanglei9876/article/details/41652363