input: Write a function to combine the elements of two lists into a list of tuples. If the given lists are not of equal length, the function should ignore the extra elements in the longer list.
  assert combine_list([1, 2, 3], [4, 5, 6])==[(1, 4), (2, 5), (3, 6)]
  assert combine_list([1, 2], [3, 4, 5])==[(1, 3), (2, 4)]
  assert combine_list([1, 2, 3], [4, 5])==[(1, 4), (2, 5)]
  assert combine_list([], [1, 2, 3])==[]
  assert combine_list([1, 2, 3], [])==[]
output: def combine_list(list1, list2):
      return list(zip(list1, list2))