如何在Python中找到以整数结尾的子字符串的最高值？

Question

如何在Python中找到以整数结尾的子字符串的最高值？

输入：

a =  """ classification-filters {
     filter123 {
     filter025 {
     filter0 { """

输出：以最大整数=“filter123”结尾的子字符串

Answer 1

import re

a =  """ classification-filters {
    filter123 {
    filter025 {
    filter0 { """

filters = re.findall(r'(filter(\d+))', a)
largest = max(tup[1] for tup in filters)
for filter in filters:
    if filter[1] == largest:
        print(filter[0])

或者，可以对结果列表进行排序，然后打印最后一个元素：

filters = re.findall(r'filter\d+', a)
filters.sort()
print(filters[-1]