Given a List get all the combinations of tuples without duplicated results

Question

I have a list=[1,2,3,4] And I only want to receive tuple results for like all the positions in a matrix, so it would be

(1,1),(1,2),(1,3),(1,4),(2,1),(2,2),(2,3),(2,4),(3,1),(3,2),(3,3),(3,4),(4,1),(4,2),(4,3),(4,4)

I've seen several codes that return all the combinations but i don't know how to restrict it only to the tuples or how to add the (1,1),(2,2),(3,3),(4,4)

Thank you in advance.

Answer 1

You just need a double loop. A generator makes it easy to use

lst = [1,2,3,4]

def matrix(lst):
    for i in range(len(lst)):
        for j in range(len(lst)):
            yield lst[i], lst[j]

output = [t for t in matrix(lst)]

print(output)

Output:

[(1, 1), (1, 2), (1, 3), (1, 4), (2, 1), (2, 2), (2, 3), (2, 4), (3, 1), (3, 2), (3, 3), (3, 4), (4, 1), (4, 2), (4, 3), (4, 4)]