Creating a tuple without using tuple function

October 26, 2022

I have to create a list of tuples without using the tuple() function. The input is a list of lists where each list contains a profile ID and the calendar date on which the user went of a date. The output is a list of tuples showing the profile ID and the number of dates the user went on.

The final output should be a list of tuples, but my code outputs each element individually.
Below is the code I wrote to try to convert the list elements to tuples.

for stuff in datingTrack:
        for smallerStuff in stuff:
            tuplesList = (smallerStuff)
            datingTrack2.append(tuplesList)

input: [["B111", "10/2/2022"], ["B222", "9/25/2022"], ["B333", "8/1/2022"], ["B222", "9/2/2022"]]

my output: ['B111', 1, 'B222', 2, 'B333', 1]

Expected output: [('B111', 1,) ('B222', 2), ('B333', 1)]

>Solution :

If you’re forced to not use the tuple construtor, this will do it

my_input = [["B111", "10/2/2022"], ["B222", "9/25/2022"], ["B333", "8/1/2022"], ["B222", "9/2/2022"]]

my_output = [(*item,) for item in my_input]
# [('B111', '10/2/2022'), ('B222', '9/25/2022'), ('B333', '8/1/2022'), ('B222', '9/2/2022')]