mylist = [64, 34, 25, 12, 22, 11, 90, 5]

​

n = len(mylist)

for i in range(n):

  min_index = i

  for j in range(i+1, n):

     if mylist[j] < mylist[min_index]:

       min_index = j

  mylist[i], mylist[min_index] = mylist[min_index], mylist[i]

​

print(mylist)

​