func_code: def reverse(a):
      i = 0
      while i < len(a):
          tmp = a[i]
          a[i] = a[len(a) - i - 1]
          a[len(a) - i - 1] = tmp
          i = i + 1
      print(a)
annotation: def reverse(a):
      i = 0
      while i < len(a) / 2:
          tmp = a[i]
          a[i] = a[len(a) - i - 1]
          a[len(a) - i - 1] = tmp
          i = i + 1
      return a
  