题解 | #提取数字电话#
提取数字电话
https://www.nowcoder.com/practice/6e25b95632e6433db4b5053f91138cb5
strs = input()
tiqu = list()
for i in strs:
if(i == '0' or i == '1' or i == '2' or i == '3' or i == '4' or i == '5' or i == '6' or i == '7' or i == '8' or i == '9'):
tiqu.append(i)
else:
continue
for i in tiqu:
print(i,end='')
