Need help for a program

Here is the program I am trying to run in python 3.3.



a=(3,4,7)
print (a)
print (a[2])
...a[0:2]=[1,12]
print (a)

first 3 lines are working. but there may be some problem in last 2 line. It is showing error telling invalid syntax.

might it be the within the traceback

also tuples are immutable thus they cannot be reassigned by index as such as line 4

I am newbie to python. please give me a specific correction for the code that will run.

well the syntax is due to the ..., which i am assuming you copied and pasted from an example, which in that case it just meant something was excluded for simplicity.

Anyways, the create a new var, concatanate the sliced tuple with a single tuple containing the list



the result will be a second tuple with the desired spliced original tuple and the new list

thank you for your reply . here assign valued for 'a' is (3,4,7) but i want to change the value from (3,4,7) to (5,67,7) by writing code. is it possible?

Well, you can reassign the name a by just doing a = (5, 67, 3).

You can't change it in-place because tuples are immutable. If you want to do that, you'll need to make it a list (using square brackets) instead.

thank you. it really works

i want to change the value of 'a' from (3,4,7) to (3,4). means that I want to remove 7 from 'a' and make it (3,4). is it possible by writing program??

A tuple cannot be changed in any way after it is created; this is what is meant by "immutable". Once again, though, it is trivial with lists:

again thank you for your answer. it also worked for me . I have another question . I want to change the value of 'a' from [3,4,7] to [3,4,7,5,9]. that means I want to add some value in 'a'. how is it possible by writing program?

lists have an append() method that you can use, which will by default place the value at the end of the list.

thank u. it worked for me.