如何在Python中获取带索引列表的重复字符串

def find_duplicate_strings_with_indices(lst):
    seen = set()
    duplicates = {}
    
    for index, item in enumerate(lst):
        if item in seen:
            if item in duplicates:
                duplicates[item].append(index)
            else:
                duplicates[item] = [seen[item], index]
        else:
            seen[item] = index
    
    return {key: value for key, value in duplicates.items() if len(value) > 1}

# 示例列表
lst = ["apple", "banana", "apple", "orange", "banana", "grape"]

# 获取带索引的重复字符串
result = find_duplicate_strings_with_indices(lst)

print(result)

{'apple': [0, 2], 'banana': [1, 4]}