List of numbers to add

[Planeuge]

Thanks a lot ! I didn't give it a look though, but I'll definitely do it tomorrow, it looks pretty powerful :D

In the end, I just wrote one of the least efficient code I've ever created:

def main(lis, valInit, valcherchee):
    valref=valInit
    for a in range (len(lis)):
        valInit+=lis[a]
        if -1<valInit<1:
                return a
        else :
            for b in range(a+1, len(lis)):
                valInit+=lis[b]
                if -1<valInit<1:
                    return a,b
                else:
                    for c in range(b+1, len(lis)):
                        valInit+=lis[c]
                        if -1<valInit<1:
                            return a,b,c
                        else:
                            for d in range(c+1, len(lis)):
                                valInit+=lis[d]
                                if -1<valInit<1:
                                    return a,b,c,d
                                valInit=valref+lis[a]+lis[b]+lis[c]
                        valInit=valref+lis[a]+lis[b]                   
                valInit=valref+lis[a]
        valInit=valref

whith a few more lines. It worked anyway, I got where I wanted, but it must be the least efficient way to do it, so I'll work towards improving it, and thanks again for your help !