code: def append(self, x):
      if not x:
          return
      lines = re.split(b"\r\n|\n", x)
      if len(lines) > 1:
          [self.append(line) for line in lines]
          return
      if x.startswith(b"\r"):
          if self:
              self.pop()
          x = x[1:]
      for sep in [b"\r\n", b"\n"]:
          if x.endswith(sep):
              x = x[: -len(sep)]
      super().append(x)
  
imports: import os
  import re
  import sys
  import time
  import numpy
  import pytest
  import tqdm
  import wandb
label_desc: Use image node_id 1 for calling the CapList obj's underlying member method code with example usage: obj.append(x) without return types