Beginner question: difference between lists and tuples

[KDawg44]

Hi,

I am trying to learn python. I am working through a tutorial on
python.org. I am trying to figure out how lists are different than
tuples other than changing values at specific indices. How are these
different from arrays in other languages such as php?

THanks.

[Jim]

Re: Beginner question: difference between lists and tuples

On Mar 14, 3:46 pm, "KDawg44" <KDaw...@gmail. comwrote:

I am trying to learn python. I am working through a tutorial on
python.org. I am trying to figure out how lists are different than
tuples other than changing values at specific indices.

You can change lists but not tuples. That has some advantages, as
when you append to a list. But it has some disadvantages, as here
where I can't use a list as the key in a hash.

>>d={[1,2]:'a'}

Traceback (most recent call last):
File "<stdin>", line 1, in ?
TypeError: list objects are unhashable

>>d={(1,2):'a '}
>>>

Jim

[Bruno Desthuilliers]

Re: Beginner question: difference between lists and tuples

KDawg44 a écrit :

Hi,
>
I am trying to learn python. I am working through a tutorial on
python.org. I am trying to figure out how lists are different than
tuples other than changing values at specific indices.

http://www.python.org/doc/faq/general/#why-are-there-separate-tuple-and-list-data-types