code: def _exp(value):
      if isinstance(value, numbers.Number):
          return math.exp(value)
      return value.exp()
  
file_path: pyro/pyro/contrib/tracking/assignment.py
imports: import itertools
  import math
  import numbers
  import torch
  import pyro.distributions
  from pyro.util import warn_if_nan
label_desc: Use image node_id 2 for calling a global function with example usage: _exp(value) and returns: value, math