python中怎么写判断一个字符串里的子字符是否为整数
计算用户输入的内容中有几个整数(以个位数为单位)。
如:content = input("请输入内容:") # 如fhdal234slfh98769fjdla
content = input("请输入内容:")
nubs = 0
lis = ["0","1","2","3","4","5","6","7","8","9"]
for i in content:
if i in lis: #有没有办法在这里判断循环的字符是不是数字?
nubs += 1
print(f"您输入的字符中有{nubs}个数字")