n=int(raw_input('enter the number of mcnuggets you want to buy : ')) #total number of mcnuggets you want yo buy
for a in range(1,n) and b in range(1,n) and c in range(1,n) :
if (6*a+9*b+20*c==n):
print 'number of packs of 6 are ',a
print 'number of packs of 9 are ',b
print 'number of packs of 20 are',c
我是编程新手,正在学习 python。上面的代码给出了错误。有什么建议吗?
您应该使用嵌套循环:
for a in range(1, n):
for b in range(1, n):
for c in range(1, n):
if ...
或者甚至更好:
import itertools
for a, b, c in itertools.product(range(1, n + 1), repeat=3):
if ...
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