code: def test_input_var_bcast(self):
      from lasagne.layers.input import InputLayer
  
      assert InputLayer((3, 2)).input_var.broadcastable == (
          False,
          False,
      )
      assert InputLayer((1, 2)).input_var.broadcastable == (True, False)
      assert InputLayer((None, 1)).input_var.broadcastable == (
          False,
          True,
      )
  
file_path: Lasagne/lasagne/tests/layers/test_input.py
imports: import pytest
  import theano
label_desc: Use image node_id 5 for calling the TestInputLayer obj's underlying member method code with example usage: obj.test_input_var_bcast() without return types