python - 词典不添加新词条

Question

从字符串元组，创建字典并添加索引(键)和字符串长度(值)的函数。但是，for 循环只添加了某些条目(在本例中为索引 0 和 2)并且无法找出原因。

代码:

def check_horse_winner(tup):
    results=dict()
    for i in tup:
        results[tup.index(i)]=len(i)
    return results
print(check_horse_winner(("HORSE", "HORSE", "HORS", "HORSE")))

输出:

{0: 5, 2: 4}

Answer 1

使用枚举

例如:

def check_horse_winner(tup):
    results=dict()
    for i, v in enumerate(tup):
        results[i]=len(v)
    return results
print(check_horse_winner(("HORSE", "HORSE", "HORS", "HORSE")))
# --> {0: 5, 1: 5, 2: 4, 3: 5}