tf.nest.is_nested

Returns true if its input is a collections.abc.Sequence (except strings).

tf.nest.is_nested(
    seq
)

  tf.nest.is_nested("1234")
    False
    
  tf.nest.is_nested([1, 3, [4, 5]])
    True
    
  tf.nest.is_nested(((7, 8), (5, 6)))
    True
    
  tf.nest.is_nested([])
    True
    
  tf.nest.is_nested({"a": 1, "b": 2})
    True
    
  tf.nest.is_nested({"a": 1, "b": 2}.keys())
    True
    
  tf.nest.is_nested({"a": 1, "b": 2}.values())
    True
    
  tf.nest.is_nested({"a": 1, "b": 2}.items())
    True
    
  tf.nest.is_nested(set([1, 2]))
    False
    
  ones = tf.ones([2, 3])
  tf.nest.is_nested(ones)
    False

seq an input sequence.

True if the sequence is a not a string and is a collections.abc.Sequence or a dict.