input: Write a function to combine the elements of two lists into a list of tuples. The function should take two lists as input and return a list of tuples where each tuple contains elements from the same index of both input lists. If one list is shorter than the other, the extra elements from the longer list should be ignored.
  assert combine_list([1, 2, 3], [4, 5, 6])==[(1, 4), (2, 5), (3, 6)]
  assert combine_list(['a', 'b'], [10, 20])==[('a', 10), ('b', 20)]
  assert combine_list([1, 2], [3, 4, 5])==[(1, 3), (2, 4)]
  assert combine_list([], [])==[]
  assert combine_list([1], ['x', 'y', 'z'])==[(1, 'x')]
output: def combine_list(list1, list2):
      return [(list1[i], list2[i]) for i in range(min(len(list1), len(list2)))]