** to run this program which add element into list ** error int object is not iterable
d={'a':[1,4]}
d['a']. extend (34)
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1You have confused `extend` with `append`. – Burhan Khalid May 13 '18 at 09:10
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`extend` is expecting an object that can be iterated (e.g. `for x in [1, 4]`). You cannot loop through an `int` object. – slackmart May 13 '18 at 09:13
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d['a'] is a list. To add a single element to that list, either use append() or call extend() with an iterable (such as a list or a tuple):
d['a'].append(34)
d['a'].extend([34])
For further background, see What exactly are iterator, iterable, and iteration?
NPE
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@user9405787, This has nothing to do with dictionaries. `append` and `extend` are `list` methods. – jpp May 13 '18 at 09:12