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.

CodePudding user response：

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')].

If you have multiple colors in a list with as many entries as you have in your list with the tuples you can zip both sets of data.

a = [('1', 'hello', 'en'), ('2', 'hi', 'en'), ('3', 'oy', 'en')]
colors = ['red', 'green', 'blue']

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

Now the result is

[('1', 'hello', 'en', 'red'), ('2', 'hi', 'en', 'green'), ('3', 'oy', 'en', 'blue')]

CodePudding user response：

tuples are immutable so you cannot append(). If you want to add stuffs you should use python lists. Hope, that might help you!

CodePudding user response：

You can convert the tuple to a list, change it, and then converting back to a tuple

a[0] = list(a[0])
a[0].append("red")
a[0] = tuple(a[0])

Just loop this for the entire list and it should work