从python中的字典的字典中随机选择

Question

I have defined dictionary of dictionary of the form:

my_dict = {
    "my_key1": {"key_1": value_1, "key_2": value_2},
    "my_key2": {"key_1": value_1, "key_2": value_2, "key_3": value_3},
    "my_key3": {"key_1": value_1, "key_2": value_2, "key_3": value_3, , "key_4": value_4},
    "my_key4": {"key_1": value_1, "key_2": value_2}
}

I want to randomly select one "value" for each my_key. I tried below which didn't work:

for key in my_dict:
    # randomly select from the sub-dictionary
        rand = random.sample(list(param[key]), 1)
    # get value at that randomVal
        net[key] = param[key][rand]

Is there any other way to randomly select the values for each key. Thanks in advance!

Answer 1

IIUC, you can use list comprehension and random.choice

>>> r = [random.choice(list(v.values())) for k,v in my_dict.items()]
['value_2', 'value_2', 'value_3', 'value_4'] # example