code: def add_v(expr, rng=None):
      if rng is None:
          rng = random.randint(0, 2)
      return expr + v[rng], rng
  
file_path: tinygrad/test/external/fuzz_symbolic.py
imports: import itertools
  import random
  from tinygrad.helpers import DEBUG
  from tinygrad.shape.symbolic import Variable, NumNode
label_desc: Use image node_id 1 for calling a global function with example usage: add_v(expr, rng) and returns: unknown,  rng