code: def _shaped_arange(*shape):
      """Runs np.arange, converts to float and reshapes."""
      return np.arange(np.prod(shape), dtype=np.float32).reshape(*shape)
  
file_path: PARL/parl/algorithms/fluid/impala/tests/vtrace_test_fluid.py
imports: import copy
  import numpy
  import unittest
  from parl import layers
  from paddle import fluid
  from parameterized import parameterized
  from parl.algorithms.fluid.impala import vtrace
  from parl.utils import get_gpu_count
label_desc: Use image node_id 1 for calling a global function with example usage: _shaped_arange() and returns: np