Inserting an item in a Tuple

Question

Yes, I understand tuples are immutable but the situation is such that I need to insert an extra value into each tuple. So one of the items is the amount, I need to add a new item next to it in a different currency, like so:

('Product', '500.00', '1200.00')

Possible?

Thanks!

Asked By: eozzy

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Source

Answer 1

You can cast it to a list, insert the item, then cast it back to a tuple.

a = ('Product', '500.00', '1200.00')
a = list(a)
a.insert(3, 'foobar')
a = tuple(a)
print a

>> ('Product', '500.00', '1200.00', 'foobar')

Answered By: swanson

Answer 2

Since tuples are immutable, this will result in a new tuple. Just place it back where you got the old one.

sometuple + (someitem,)

Answered By: Ignacio Vazquez-Abrams

Answer 3

one way is to convert it to list

>>> b=list(mytuple)
>>> b.append("something")
>>> a=tuple(b)

Answered By: ghostdog74

Answer 4

You absolutely need to make a new tuple — then you can rebind the name (or whatever reference[s]) from the old tuple to the new one. The += operator can help (if there was only one reference to the old tuple), e.g.:

thetup += ('1200.00',)

does the appending and rebinding in one fell swoop.

Answered By: Alex Martelli

Answer 5

For the case where you are not adding to the end of the tuple

>>> a=(1,2,3,5,6)
>>> a=a[:3]+(4,)+a[3:]
>>> a
(1, 2, 3, 4, 5, 6)
>>>

Answered By: John La Rooy

Answer 6

def tuple_insert(tup,pos,ele):
    tup = tup[:pos]+(ele,)+tup[pos:]
    return tup

tuple_insert(tup,pos,9999)

tup: tuple
pos: Position to insert
ele: Element to insert

Answered By: Vidya Sagar

Answer 7

You can code simply like this as well:

T += (new_element,)

Answered By: Vivek

Answer 8

t = (1,2,3,4,5)

t= t + (6,7)

output :

(1,2,3,4,5,6,7)

Answered By: hardik patel

Inserting an item in a Tuple

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