code: def torch_float(x):
      return x.float() if isinstance(x, torch.Tensor) else float(x)
  
imports: import functools
  import math
  import numbers
  import random
  import sys
  import timeit
  import warnings
  from collections import defaultdict
  from contextlib import contextmanager
  from itertools import zip_longest
  import numpy
  import torch
  from pyro.poutine.util import site_is_subsample
label_desc: Use image node_id 19 for calling a global function with example usage: torch_float(x) and returns: unknown