如何在字符串中按特定顺序查找特定字符。Python

def find_characters(string, characters):
    index = -1
    for char in characters:
        index = string.find(char, index + 1)
        if index == -1:
            break
    return index

string = "Hello, World!"
characters = "lo"

index = find_characters(string, characters)
if index != -1:
    print(f"找到字符 '{characters}' 在字符串中的索引位置：{index}")
else:
    print(f"未找到字符 '{characters}'")

找到字符 'lo' 在字符串中的索引位置：3