高效地将一个很长的json数组转换成对应的list

Question

I could have a very long and variable json object like below (the length of the object could varry)

{
'1': 230,
'2':240,
'3':100,
'4':20,
...
'670000':100
}

I need to convert above JSON object to a simple unit8 array while keeping the order of elements without saving the indexes

[230,240,100,20,...,100]

well, I come up with below solution using genrators

def f(js):
...    for x in js:
...        yield js[x]
[x for x in f(js)]

But I wonder why if there is a more efficient solution as well?

Answer 1

You can create a generator that steps through the items of a dictionary.

The dict.values() method will return a view object that reflects the current object.

def values_of(obj):
    for value in obj.values():
        yield value

data = {
    '1': 230,
    '2': 340,
    '3': 100,
    '4': 20,
    '670000': 100
}

print(list(values_of(data)))

Answer 2

Simply turn it into python dictionary and append every value to the list like the following

data = {
'1': 230,
'2':340,
'3':100,
'4':20,
'670000':100
}
print([i for i in data.values()])

output

[230, 340, 100, 20, 100]