Python list of tuples: increase number of tuple members

I have a list of tuples with the pattern "id", "text", "language" like this:

a = [('1', 'hello', 'en'), ...]

I would like to increase number of tuple members to "id", "text", "language", "color":

b = [('1', 'hello', 'en', 'red'), ...]

What is the correct way of doing this?

Thank you.

>Solution :

Since a tuple is immutable you have to create new tuples. I assume you want to add this additional value to every tuple in the list.

a = [('1', 'hello', 'en'), ('2', 'hi', 'en')]
color = 'red'

a = [(x + (color,)) for x in a]
print(a)

The result is [('1', 'hello', 'en', 'red'), ('2', 'hi', 'en', 'red')].