题解 | #挑7#
挑7
https://www.nowcoder.com/practice/ba241b85371c409ea01ac0aa1a8d957b
import re
# 输入数值转换为int
a = int(input())
pattern = r"7"
b = []
# 循环
for i in range(1, a + 1):
# 判断是否可以被7整除
if i % 7 == 0:
b.append(i)
elif str(i).count("7") > 0:
b.append(i)
print(len(b))
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