class_docstr: Dataset of comments from Wikipedia's Talk page edits. Taken from the Toxic Comments
  Classification Challenge on Kaggle.
  
  <https://www.kaggle.com/c/jigsaw-toxic-comment-classification-challenge/data>
  
  We convert this data to a binary classification task.
class_docstr_tok: ["Dataset","of","comments","from","Wikipedia","'s","Talk","page","edits",".","Taken","from","the","Toxic","Comments","Classification","Challenge","on","Kaggle",".","<","https",":","\/\/www.kaggle.com\/c\/jigsaw-toxic-comment-classification-challenge\/data",">","We","convert","this","data","to","a","binary","classification","task","."]
code: def _get_data(self):
      # useful constants
      # all of these colors are bolded
      RESET = "\033[0m"
      RED = "\033[1;91m"
      YELLOW = "\033[1;93m"
      GREEN = "\033[1;92m"
      BLUE = "\033[1;96m"
      CYAN = "\033[1;94m"
      MAGENTA = "\033[1;95m"
  
      # only use colors if we're outputting to a terminal
      USE_COLORS = _sys.stdout.isatty()
      if not USE_COLORS:
          RESET = RED = YELLOW = GREEN = BLUE = CYAN = MAGENTA = ""
  
      # generate the rainbow stars
      rainbow = [RED, YELLOW, GREEN, CYAN, BLUE, MAGENTA]
      size = 78 // len(rainbow)
      stars = "".join([color + "*" * size for color in rainbow])
      stars += RESET
  
      if not os.path.exists(self.data_path):
          PathManager.mkdirs(self.data_path)
      if not PathManager.exists(
          os.path.join(self.data_path, "train.csv")
      ):
          raise RuntimeError(
              f"\n\n{stars}\nThis data must be downloaded from {self.DATA_SOURCE}"
              "\nIt cannot be automatically downloaded, as one must agree to "
              "the competition rules outlined on the website before "
              "gaining access to the data.\n\n"
              "Once downloaded, please put the data in the following "
              f"directory: \n{self.data_path}\n{stars}"
          )
  
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  import parlai.core.build_data
  from parlai.core.message import Message
  from parlai.core.teachers import FixedDialogTeacher
  from parlai.utils.io import PathManager
  from .base_agent import _BaseSafetyTeacher
  from .build import build
  import copy
  import json
  import os
  import random
  import sys
label_desc: Use image node_id 3 for calling the WikiToxicCommentsTeacher obj's underlying member method code with example usage: obj._get_data() without return types