def sort(seq):
    small = seq[0]
    index = 0
    for i in range(1,len(seq)):
        if seq[i] < small:
           small = seq[i]
           index = i
    return index

def sort2(seq):
    new_list = list()
    for i in range(len(seq)):
        small = sort(seq)
        new_list.append(seq.pop(small))
    return new_list

print(sort2([4,1,3,5,6]))