diff --git a/extra/utils.py b/extra/utils.py
index af0757e47e..b0536e2b04 100644
--- a/extra/utils.py
+++ b/extra/utils.py
@@ -208,3 +208,13 @@ def get_child(parent, key):
     else:
       obj = getattr(obj, k)
   return obj
+
+def _tree(lazydata):
+  if type(lazydata).__name__ == "LazyBuffer": return [f"━━ realized {lazydata.dtype.name} {lazydata.shape}"] if (lazydata.realized) else _tree(lazydata.op)
+  if len(lazydata.src) == 0: return [f"━━ {lazydata.op.name} {lazydata.arg if lazydata.arg else ''}"]
+  lines = [f"━┳ {lazydata.op.name} {lazydata.arg if lazydata.arg else ''}"]
+  childs = [_tree(c) for c in lazydata.src[:]]
+  for c in childs[:-1]: lines += [f" ┣{c[0]}"] + [f" ┃{l}" for l in c[1:]]
+  return lines + [" ┗"+childs[-1][0]] + ["  "+l for l in childs[-1][1:]]
+
+def print_tree(tensor:Tensor):print("\n".join([f"{str(i).rjust(3)} {s}" for i,s in enumerate(_tree(tensor.lazydata))]))
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