我的代码:
prices = {"banana": 4,"apple": 2,"orange": 1.5,"pear": 3}
stock = {"banana": 6,"apple": 0,"orange": 32,"pear": 15,}
for i in prices:
print i
print "price : %s" % prices[i]
print "stock : %s" % stock[i]
我的输出是:
orange
price : 1.5
stock : 32
pear
price : 3
stock : 15
banana
price : 4
stock : 6
apple
price : 2
stock : 0
None
我的问题是为什么输出结果从“橙子”开始打印,而不是从“香蕉”开始,然后是“苹果”、“橙子”和“梨子”?