code: def __init__(self, main, skip=None):
      super().__init__()
      self.main = nn.Sequential(*main)
      self.skip = skip if skip else nn.Identity()
  
imports: import math
  from dataclasses import dataclass
  from functools import partial
  import paddle
  import paddle.nn
label_desc: Use image node_id 1 to create a new SkipBlock object from inherited base classes: nn with example: obj = SkipBlock(main, skip)