从元组字典中删除相似的元组

def remove_similar_tuples(tuple_dict):
    values = [str(tuple_value) for tuple_value in tuple_dict.values()]
    unique_tuples = []
    
    for i in range(len(values)):
        is_similar = False
        for j in range(i):
            if values[i] == values[j]:
                is_similar = True
                break
        if not is_similar:
            unique_tuples.append(tuple_dict[i])
    
    return dict(enumerate(unique_tuples))

# 示例用法
tuple_dict = {0: (1, 2), 1: (3, 4), 2: (1, 2), 3: (5, 6)}
result = remove_similar_tuples(tuple_dict)
print(result)

{0: (1, 2), 1: (3, 4), 3: (5, 6)}