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.

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Re: Beginner question: difference between lists and tuples

[Jim]

On Mar 14, 3:46 pm, KDawg44 [EMAIL PROTECTED] wrote:
 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


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Re: Beginner question: difference between lists and tuples

[Bruno Desthuilliers]

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
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