code: def _clean_caption(self, caption):
      caption = str(caption)
      caption = ul.unquote_plus(caption)
      caption = caption.strip().lower()
      caption = re.sub("<person>", "person", caption)
      # urls:
      caption = re.sub(
          r"\b((?:https?:(?:\/{1,3}|[a-zA-Z0-9%])|[a-zA-Z0-9.\-]+[.](?:com|co|ru|net|org|edu|gov|it)[\w/-]*\b\/?(?!@)))",  # noqa
          "",
          caption,
      )  # regex for urls
      caption = re.sub(
          r"\b((?:www:(?:\/{1,3}|[a-zA-Z0-9%])|[a-zA-Z0-9.\-]+[.](?:com|co|ru|net|org|edu|gov|it)[\w/-]*\b\/?(?!@)))",  # noqa
          "",
          caption,
      )  # regex for urls
      # html:
      caption = BeautifulSoup(caption, features="html.parser").text
  
      # @<nickname>
      caption = re.sub(r"@[\w\d]+\b", "", caption)
  
      # 31C0—31EF CJK Strokes
      # 31F0—31FF Katakana Phonetic Extensions
      # 3200—32FF Enclosed CJK Letters and Months
      # 3300—33FF CJK Compatibility
      # 3400—4DBF CJK Unified Ideographs Extension A
      # 4DC0—4DFF Yijing Hexagram Symbols
      # 4E00—9FFF CJK Unified Ideographs
      caption = re.sub(r"[\u31c0-\u31ef]+", "", caption)
      caption = re.sub(r"[\u31f0-\u31ff]+", "", caption)
      caption = re.sub(r"[\u3200-\u32ff]+", "", caption)
      caption = re.sub(r"[\u3300-\u33ff]+", "", caption)
      caption = re.sub(r"[\u3400-\u4dbf]+", "", caption)
      caption = re.sub(r"[\u4dc0-\u4dff]+", "", caption)
      caption = re.sub(r"[\u4e00-\u9fff]+", "", caption)
      #######################################################
  
      # все виды тире / all types of dash --> "-"
      caption = re.sub(
          r"[\u002D\u058A\u05BE\u1400\u1806\u2010-\u2015\u2E17\u2E1A\u2E3A\u2E3B\u2E40\u301C\u3030\u30A0\uFE31\uFE32\uFE58\uFE63\uFF0D]+",  # noqa
          "-",
          caption,
      )
  
      # кавычки к одному стандарту
      caption = re.sub(r"[`´«»“”¨]", '"', caption)
      caption = re.sub(r"[‘’]", "'", caption)
  
      # &quot;
      caption = re.sub(r"&quot;?", "", caption)
      # &amp
      caption = re.sub(r"&amp", "", caption)
  
      # ip adresses:
      caption = re.sub(
          r"\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}", " ", caption
      )
  
      # article ids:
      caption = re.sub(r"\d:\d\d\s+$", "", caption)
  
      # \n
      caption = re.sub(r"\\n", " ", caption)
  
      # "#123"
      caption = re.sub(r"#\d{1,3}\b", "", caption)
      # "#12345.."
      caption = re.sub(r"#\d{5,}\b", "", caption)
      # "123456.."
      caption = re.sub(r"\b\d{6,}\b", "", caption)
      # filenames:
      caption = re.sub(
          r"[\S]+\.(?:png|jpg|jpeg|bmp|webp|eps|pdf|apk|mp4)",
          "",
          caption,
      )
  
      #
      caption = re.sub(
          r"[\"\']{2,}", r'"', caption
      )  # """AUSVERKAUFT"""
      caption = re.sub(r"[\.]{2,}", r" ", caption)  # """AUSVERKAUFT"""
  
      caption = re.sub(
          self.bad_punct_regex, r" ", caption
      )  # ***AUSVERKAUFT***, #AUSVERKAUFT
      caption = re.sub(r"\s+\.\s+", r" ", caption)  # " . "
  
      # this-is-my-cute-cat / this_is_my_cute_cat
      regex2 = re.compile(r"(?:\-|\_)")
      if len(re.findall(regex2, caption)) > 3:
          caption = re.sub(regex2, " ", caption)
  
      caption = ftfy.fix_text(caption)
      caption = html.unescape(html.unescape(caption))
  
      caption = re.sub(
          r"\b[a-zA-Z]{1,3}\d{3,15}\b", "", caption
      )  # jc6640
      caption = re.sub(
          r"\b[a-zA-Z]+\d+[a-zA-Z]+\b", "", caption
      )  # jc6640vc
      caption = re.sub(r"\b\d+[a-zA-Z]+\d+\b", "", caption)  # 6640vc231
  
      caption = re.sub(
          r"(worldwide\s+)?(free\s+)?shipping", "", caption
      )
      caption = re.sub(r"(free\s)?download(\sfree)?", "", caption)
      caption = re.sub(r"\bclick\b\s(?:for|on)\s\w+", "", caption)
      caption = re.sub(
          r"\b(?:png|jpg|jpeg|bmp|webp|eps|pdf|apk|mp4)(\simage[s]?)?",
          "",
          caption,
      )
      caption = re.sub(r"\bpage\s+\d+\b", "", caption)
  
      caption = re.sub(
          r"\b\d*[a-zA-Z]+\d+[a-zA-Z]+\d+[a-zA-Z\d]*\b", r" ", caption
      )  # j2d1a2a...
  
      caption = re.sub(r"\b\d+\.?\d*[xх×]\d+\.?\d*\b", "", caption)
  
      caption = re.sub(r"\b\s+\:\s+", r": ", caption)
      caption = re.sub(r"(\D[,\./])\b", r"\1 ", caption)
      caption = re.sub(r"\s+", " ", caption)
  
      caption.strip()
  
      caption = re.sub(r"^[\"\']([\w\W]+)[\"\']$", r"\1", caption)
      caption = re.sub(r"^[\'\_,\-\:;]", r"", caption)
      caption = re.sub(r"[\'\_,\-\:\-\+]$", r"", caption)
      caption = re.sub(r"^\.\S+$", "", caption)
  
      return caption.strip()
  
imports: import html
  import inspect
  import re
  import urllib.parse
  from typing import Any, Callable, Dict, List, Optional, Union
  import numpy
  import PIL.Image
  import torch
  import torch.nn.functional
  from transformers import CLIPImageProcessor, T5EncoderModel, T5Tokenizer
  from ...loaders import LoraLoaderMixin
  from ...models import UNet2DConditionModel
  from ...schedulers import DDPMScheduler
  from ...utils import BACKENDS_MAPPING, PIL_INTERPOLATION, is_accelerate_available, is_bs4_available, is_ftfy_available, logging, replace_example_docstring
  from ...utils.torch_utils import randn_tensor
  from ..pipeline_utils import DiffusionPipeline
  from .pipeline_output import IFPipelineOutput
  from .safety_checker import IFSafetyChecker
  from .watermark import IFWatermarker
label_desc: Use image node_id 4 for calling the IFImg2ImgSuperResolutionPipeline obj's underlying member method code with example usage: obj._clean_caption(caption) and returns: caption