从给定字符串中提取最大数值

Question

Given an alphanumeric string S , extract maximum numeric value from that string. All the alphabets are in lower case. Take the maximum consecutive digits as a single number.

Example Input: 23dsa43dsa98
Expected Output: 98

I tried:

import re
a=input()
item=([re.split(r'(\d+)', s) for s in (a)])
print(item)

Answer 1

这会起作用：

max(re.findall('\d+', a), key = lambda x: int(x))

Answer 2

Try:

res = re.findall(r'\d+', a)
max(list(map(int, res)))