Get all possible combinations from a list as tuples

Context: I’m learning python and I’m trying to make permutations without using itertools. I have a list with 3 football teams and I’d like to make all possible matches between them (so with 3 teams from the team list, we would have 6 possible matches, 4 teams would be 12 matches, etc).

I was trying to do something like this:

team = ["FCP", "SCP", "SLB"]

def allMatches(lst):
    teams = []
    for index in range(0,len(lst)-1):
        for element in lst:
            if teams[index][0] != teams[index][1]: #I was trying to make it so that tuples that have the same team are excluded - ('FCP','FCP') would not be appended for example, but I'm calling teams when it has 0 items appended so this won't do nothing
                teams.append(tuple((element,team[index-1])))
    return teams

allMatches(team)

Desired output would be something like this:

[('FCP','SCP'), ('FCP','SLB'), ('SCP','FCP'), ...]

Thank you in advance

>Solution :

This would fix your code:

team = ["FCP", "SCP", "SLB"]
def allMatches(lst):
    teams = []
    for element_list1 in lst:
        for element_list2 in lst:
            if element_list1 != element_list2:
                teams.append(tuple((element_list1, element_list2)))
    return teams

allMatches(team)

It would be even nicer with a list comprehension:

team = ["FCP", "SCP", "SLB"]
def allMatches(lst):
    return [(el1, el2) for el1 in lst for el2 in lst if el1!=el2]
    

allMatches(team)