In dictionary, converting the value from string to integer

Question

Taking this below example :

'user_stats': {'Blog': '1',
                'Discussions': '2',
                'Followers': '21',
                'Following': '21',
                'Reading': '5'},

I want to convert it into:

'Blog' : 1 , 'Discussion': 2, 'Followers': 21, 'Following': 21, 'Reading': 5

score 20 · Accepted Answer · answered Feb 10 '12 at 07:48

20

dict_with_ints = dict((k,int(v)) for k,v in dict_with_strs.iteritems())

answered Feb 10 '12 at 07:48

Amber

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Note that [`iteritems`](https://docs.python.org/2/library/stdtypes.html#dict.iteritems) [is gone](http://stackoverflow.com/questions/10458437/what-is-the-difference-between-dict-items-and-dict-iteritems) in [Python 3](https://www.python.org/download/releases/3.0/). Use [`items()`](https://docs.python.org/3.7/library/stdtypes.html#dict.items) instead. – patryk.beza Apr 16 '17 at 18:01

score 13 · Answer 2 · answered Feb 10 '12 at 07:54

13

You can use a dictionary comprehension:

{k:int(v) for k, v in d.iteritems()}

where d is the dictionary with the strings.

answered Feb 10 '12 at 07:54

jcollado

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@IvanVirabyan You can also use dictionary comprehensions in python 2.7 since they have been backported. – jcollado Feb 10 '12 at 08:15
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In fact, that code will only work in Python 2.7 . `dict.iteritems` is gone in 3, since `dict.items` no longer builds a list. – lvc Feb 10 '12 at 11:09

score 3 · Answer 3 · answered Feb 10 '12 at 07:48

3

>>> d = {'Blog': '1', 'Discussions': '2', 'Followers': '21', 'Following': '21', 'Reading': '5'}
>>> dict((k, int(v)) for k, v in d.iteritems())
{'Blog': 1, 'Discussions': 2, 'Followers': 21, 'Following': 21, 'Reading': 5}

answered Feb 10 '12 at 07:48

eumiro

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score 1 · Answer 4 · answered Dec 01 '18 at 15:35

1

Lest anyone be mislead by this page - Dictionary literals in Python 2 and 3 can of course have numeric values directly.

embed={ 'the':1, 'cat':42, 'sat':2, 'on':32, 'mat':200, '.':4 }
print(embed['cat']) # 42

answered Dec 01 '18 at 15:35

Pat Niemeyer

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In dictionary, converting the value from string to integer

4 Answers4