Python if语句条件使用字典字符串

Question

I would like to use dictionary value of the key to verify if condition is true eg

dictionary = [{'Class': '>50K'},{'Class': '<=50K'}]
    for i in dictionary:

        if i['Class'] == '<=50k':
            po_list_count +=1

        else:
            rich_list_count +=1

    print(po_list_count,'---',rich_list_count)

print should be 1 --- 1 instead I get 0 --- 2
I have tried with if i['Class'] in ['<=50k'] but same result.
Is it something I do not understand about how if statement works or perhaps how it treats strings?

Answer 1

You need to check for a capital "K":

if i['Class'] == '<=50K':

You used one in dictionary :

dictionary = [{'Class': '>50K'},{'Class': '<=50K'}]
#                                        here--^

Answer 2

在你的定义中，你使用大写<=50K并在你的if语句中使用小写k

Answer 3

Because k and K is not the same character. You'll have to match it:

if i['class'] = '50K':

Or, a better trick: Just check both in lowercase!

if i['class'].lower() = '50k':

Hope this helps!