在研发闲暇时间，将内容过程较好的一些内容做个记录，如下的内容段是关于python判断数组是否包含指定的元素的方法的内容，应该对大伙有用处。
print 3 in [1, 2, 3] # membership (1 means true
inventory = ["sword", "armor", "shield", "healing potion"]
if "healing potion" in inventory:
print "You will live to fight another day."