code: def alpha():
      """
      alpha parameter for the Beta distribution.
      """
      return torch.DoubleTensor([2.4])
  
file_path: pyro/tests/distributions/test_tensor_type.py
imports: import pytest
  import scipy.stats
  import torch
  import pyro.distributions
  from tests.common import assert_equal
label_desc: Use image node_id 2 for calling a global function with example usage: alpha() and returns: torch