Python method-list

Question

in Python3.2 I'm trying to do a list:

>> ls = 1, 2, 3
>> ls
(1, 2, 3)
>> ls.append(4)

And with this last command, I get the following error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'tuple' object has no attribute 'append'

Why is this? How can I solve it? Thanks for your time

Community · Accepted Answer · 2017-05-23 11:50:02Z

6

The syntax for a list is [1, 2, 3].

(1, 2, 3) is a tuple.

Lists are mutable, but tuples are immutable. That is, tuples can't be modified after they have been created (which is why you can't append to them).

This answer has great insight as to when you'd use one over the other.

edited May 23, 2017 at 11:50

CommunityBot

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answered Sep 21, 2013 at 11:39

Thomas Orozco

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1 Comment

Telmo Vaz Over a year ago

Thank you very much! That was a great help.

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