When to use list and tuples?.

[psbasha]

Hi,

I know that list and dict are mutable and tuples are immutables.But list and tuples do the similar datastorage with different representation

But how to decide when to use list and tuples?.

Can anybody suggest this scenario.

Thanks in advance
PSB

[bartonc]

Hi,

I know that list and dict are mutable and tuples are immutables.But list and tuples do the similar datastorage with different representation

But how to decide when to use list and tuples?.

Can anybody suggest this scenario.

Thanks in advance
PSB

This gets us into the discussion of mutable vs immutable objects.
For "constant" lists, like a list of functions in a lookup table, it is more effecient to use a tuple. Tuples don't allow assignment:

>>> t = (1, 2, 3,)
>>> t[1] = 5
  File "<console>", line 1, in ?
''' exceptions.TypeError : object does not support item assignment '''
>>>

Tuples are also more picky about integer type indexes than lists:

>>> l = ["no", "yes"]
>>> l[True]
'yes'
>>>

doesn't work with tuples.

[psbasha]

Thanks for the reply.

I would like to know more about the "list of functions in a lookup table".Is it possible to get any links or material for this.


-PSB

[Extremist]

Thanks for the reply.

I would like to know more about the "list of functions in a lookup table".Is it possible to get any links or material for this.


-PSB

Google, Search, get creative

[bartonc]

Thanks for the reply.

I would like to know more about the "list of functions in a lookup table".Is it possible to get any links or material for this.


-PSB

You could try reading the relplies to your other posts. This is the reason for keeping threads on a topic going on that topic rather than starting a new thread.

[bartonc]

You could try reading the relplies to your other posts. This is the reason for keeping threads on a topic going on that topic rather than starting a new thread.

I am refering, of course, to this thread.