new_contents: import re
  
  
  def sanitize_name(name):
      return re.sub(
          '-+',
          '-',
          re.sub('[^-0-9a-z]+', '-', name.lower())).lstrip('-').rstrip('-')
  
  
  def validate_name(name):
      return name == sanitize_name(name)
  
subject: Add name sanitization