如何将此列表转换为for循环，但无法[复制]

Question

def keys(dic):
    return [key for key in dic]


print(keys(dic))

我想把列表理解替换为for循环

Answer 1

这就是你要求的吗？

def keys(dic):
    key_list = []

    for key in dic.keys():
        list.append(key)
        print(key)

    return key_list

Answer 2

def f(dic):
    new_keys = []
    for i in dic:
        new_keys.append(i)

    return new_keys

def g(dic):
    return list(dic)

def h(dic):
    return [*dic]

dic = {'a': 1, 'b': 2}
print(f(dic))
print(g(dic))
print(h(dic))

f是你想要的，但我不会用f。我会和g一起去，也许看看h。h代表python

检查输出

['a', 'b']
['a', 'b']
['a', 'b']