题解 | #挑7#
挑7
https://www.nowcoder.com/practice/ba241b85371c409ea01ac0aa1a8d957b
num = int(input())
list1=[]
for i in range(1,num+1):
# (1)能被7整除
if i%7==0:
list1.append(i)
# 包含7，且当前值不在列表中
if '7' in str(i) and i not in list1:
list1.append(i)
print(len(list1)) #列表长度就是与7有关数字的个数
，校友加油
