code: def test_batchapply_accepts_float(self):
      def raises(a, b):
          if len(a.shape) != 2:
              raise ValueError("a must be shape 2")
          return a + b
  
      out = basic.BatchApply(raises)(jnp.ones([2, 3, 4]), 2.0)
      np.testing.assert_array_equal(out, 3 * jnp.ones([2, 3, 4]))
  
imports: from absl.testing import absltest
  from absl.testing import parameterized
  from haiku._src import base
  from haiku._src import basic
  from haiku._src import test_utils
  from haiku._src import transform
  import jax
  from jax import random
  import jax.numpy
  import numpy
label_desc: Use image node_id 12 for calling the BasicTest obj's underlying member method code with example usage: obj.test_batchapply_accepts_float() and returns: unknown