Lab3-1

def printtree(tree,indent=''):
      global lvl
      global rezultati

      if tree.results!=None:
            print str(tree.results)
            str(tree.results)
            rezultati.append(lvl)

      else:
            print str(tree.col)+':'+str(tree.value)+'? '+'Level=%d' % lvl
            lvl=lvl+1

            print indent+'T->',
            printtree(tree.tb,indent+'  ')
            print indent+'F->',
            printtree(tree.fb,indent+'  ')