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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _two_element_tuple(int_or_tuple):
 """Converts `int_or_tuple` to height, width. Several of the functions that follow accept arguments as either a tuple of 2 integers or a single integer. A single integer indicates that the 2 values of the tuple are the same. This functions normalizes the input value by always returning a tuple. Args: int_or_tuple: A list of 2 ints, a single int or a tf.TensorShape. Returns: A tuple with 2 values. Raises: ValueError: If `int_or_tuple` it not well formed. """

  if isinstance(int_or_tuple, (list, tuple)):
    if len(int_or_tuple) != 2:
      raise ValueError('Must be a list with 2 elements: %s' % int_or_tuple)
    return int(int_or_tuple[0]), int(int_or_tuple[1])
  if isinstance(int_or_tuple, int):
    return int(int_or_tuple), int(int_or_tuple)
  if isinstance(int_or_tuple, tf.TensorShape):
    if len(int_or_tuple) == 2:
      return int_or_tuple[0], int_or_tuple[1]
  raise ValueError('Must be an int, a list with 2 elements or a TensorShape of '
                   'length 2')