How to find if the data is a str or int in List

Question

If I have a list as below:

samplist= [3,4,5,'abc']

How can I find out whether which index is a str or Int.I want to concatenate a string s='def' with the string 'abc' which is available in the list.

Assume that I am not aware I don't know anything about the string, neither the name nor its index in list. All i know is there is a string in the list samplist and I want to loop through and find it out so that it can be concatenated with string s='def'/.

@shaktimaan, `isdigit()` can only be used for `str`, `unicode`, `bytes`, `bytearray`, .. — falsetru, Mar 05 '14 at 06:20

score 2 · Accepted Answer · answered Mar 05 '14 at 06:19

2

for i in xrange(len(samplist)):
    if isinstace(samplist[i], str):
        samplist[i] += 'def'

answered Mar 05 '14 at 06:19

Jayanth Koushik

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Abhishek Bansal · Answer 2 · 2014-03-05T06:24:37.707

0

type() command also works:

>>> list = [1, 2, 'abc']
>>> type(list)
<class 'list'>
>>> type(list[1])
<class 'int'>
>>> type(list[2])
<class 'str'>
>>> type(list[2]) is str
True
>>> type(list[1]) is str
False

edited Mar 05 '14 at 06:24

answered Mar 05 '14 at 06:18

Abhishek Bansal

12,589
4
31
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`isinstance` is a better approach in here.check [this](http://stackoverflow.com/a/1549854/2276527) out – Alok Mar 05 '14 at 06:35
@shaktimaan Yes isinstance takes care of inheritance as well, but I doubt that would be necessary here. – Abhishek Bansal Mar 05 '14 at 06:43

How to find if the data is a str or int in List

2 Answers2