在Python中查找列表中某些值的第一个和最后一个索引

def find_first_last_index(lst, value):
    first_index = -1
    last_index = -1
    for i in range(len(lst)):
        if lst[i] == value:
            if first_index == -1:
                first_index = i
            last_index = i
    return first_index, last_index

lst = [1, 2, 3, 2, 4, 2, 5]

first_index, last_index = find_first_last_index(lst, 2)
print(first_index, last_index)  # 输出：1 5