code: def do_flip(st):
      c = random.randint(0, len(st.shape) - 1)
      stride = tuple(-1 if i == c else 1 for i in range(len(st.shape)))
      if DEBUG >= 1:
          print("st.stride(", stride, ")")
      st.stride(stride)
  
file_path: tinygrad/test/external/fuzz_shapetracker.py
imports: import random
  from tinygrad.helpers import DEBUG, getenv
  from test.unit.test_shapetracker import CheckingShapeTracker
label_desc: Use image node_id 7 for calling a global function with example usage: do_flip(st) without return types