code: def do_shrink(st):
      c = random.randint(0, len(st.shape) - 1)
      while 1:
          shrink = tuple(
              (random.randint(0, s), random.randint(0, s))
              if i == c
              else (0, s)
              for i, s in enumerate(st.shape)
          )
          if all(x < y for (x, y) in shrink):
              break
      if DEBUG >= 1:
          print("st.shrink(", shrink, ")")
      st.shrink(shrink)
  
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 5 for calling a global function with example usage: do_shrink(st) without return types