code: def __init__(self, raw_text):
      self.raw_text = "^" + raw_text + "$"
      self.norm_text = ""
  
imports: import argparse
  import codecs
  import os
  import re
  import string
  import sys
label_desc: Use image node_id 1 to create a new NSWNormalizer object  with example: obj = NSWNormalizer(raw_text)