最新回答 / jyh2012
sum = 0x = 1n = 1q=2while True:? ? if(n>20):? ? ? ? break? ? if(n>1) and (n<=20):? ? ? ? ? ? sum=sum+x*q**(n-1)? ? else:? ? ? ? sum=sum+x? ? n+=1print sum<...code...>
2018-07-12
最贊回答 / qq_隨風飄流_0
遍歷dict的key和value可以用items()和iteritem()方法,還有你的value取值應該用dict下的values()或iteritem()方法,d = {'Lisa':95,'Kitty':86,'Tom':94}print dfor k,v in d.iteritems():? ? print (k,v)或for k in d:????????for v in d.itervalues():????????????????print k,':',v
2018-07-12