python - 如何在Python中从字典中打印2个或更多随机键

Question

build_dic = {}
with open (filedictionary, 'r') as df:
    for kv in [d.strip().split(':') for d in df]:
        build_dic[kv[0]] = kv[1]

for key in build_dic:
    key = random.sample(build_dic, n)
    print key

当我运行它时，它会带有

['to study', 'to talk', 'to make']
['to make', 'to run', 'to practice']
['to run', 'to talk', 'to take']
['to arrive', 'to practice', 'to suck']
['to run', 'to search', 'to practice']
['to arrive', 'to suck', 'to talk']
['to search', 'to like', 'to take']
['to take', 'to play', 'to study']
['to study', 'to take', 'to practice']
['to suck', 'to search', 'to run']
['to play', 'to suck', 'to make']
['to suck', 'to talk', 'to search']

我该怎么办？我只想从我的 dic 中获得 3 个随 secret 钥。

Answer 1

不要使用循环。您将循环遍历字典中的所有键，并在每次迭代中选择一个新样本。

只需使用random.sample()一次:

n = 3
random_keys = random.sample(build_dic, n)
print random_keys

当然，您可以循环遍历random.sample()的结果。