code: def __init__(self, lbs: List[LazyBuffer], axis: Optional[int]):
      assert all(isinstance(x, LazyBuffer) for x in lbs) and len(
          lbs
      ), "all lbs must be LazyBuffers, and we need at least one of them"
      # assert all_same([(x.shape, x.dtype, x.st) for x in lbs]), "all multilazybuffer needs same shape, dtype, and st"
      self.lbs, self.axis, self.dtype, self.device = (
          lbs,
          axis,
          lbs[0].dtype,
          tuple(x.device for x in lbs),
      )
      self.shape = tuple(
          sum(y.shape[a] for y in self.lbs) if a == self.axis else s
          for a, s in enumerate(lbs[0].shape)
      )
  
imports: from __future__ import annotations
  from typing import Optional, Union, Any, Tuple, List
  import functools
  from tinygrad.helpers import all_same, dedup, round_up, DEBUG
  from tinygrad.dtype import DType
  from tinygrad.ops import BinaryOps, LoadOps, UnaryOps, TernaryOps, ReduceOps
  from tinygrad.lazy import LazyBuffer, create_schedule
  from tinygrad.shape.shapetracker import ShapeTracker, sint
label_desc: Use image node_id 1 to create a new MultiLazyBuffer object  with example: obj = MultiLazyBuffer(lbs, axis)