在字典上使用 for 循环来使用索引更改/更新第一个值

mydict = {"abc":[1, 2, 3], "def":[4, 5, 6], "ghi":[7, 8, 9]}

mydict = {"abc":[2, 2, 3], "def":[5, 5, 6], "ghi":[8, 8, 9]}

mydict["abc"] = [2, 2, 3]

for nums in mydict.values():    nums[0] += 1

{'abc': [2, 2, 3], 'def': [5, 5, 6], 'ghi': [8, 8, 9]}