old_contents: from __future__ import absolute_import
  from __future__ import unicode_literals
  API_USER = "api"
  SOURCE_LANGUAGE_MAPPING = {
      # 'hq_code' : 'transifex_code'
      'hin': 'hi',  # hindi
      'ori': 'or',  # oriya
      'tam': 'ta',  # tamil
      'pan': 'pa',  # punjabi
      'asm': 'as',  # assamese
      'ben': 'bn',  # bengali
      'guj': 'gu',  # gujarati
      'mal': 'ml',  # malayalam
      'mar': 'mr',  # marathi
      'snd': 'sd',  # sindhi for test
      'mri': 'mi',  # maori
      'khm': 'km',  # khmer
      'lug': 'lg',  # ganda
      'tel': 'te',  # telugu
      'urd': 'ur',  # urdu
  }
  
new_contents: from __future__ import absolute_import
  from __future__ import unicode_literals
  API_USER = "api"
  SOURCE_LANGUAGE_MAPPING = {
      # 'hq_code' : 'transifex_code'
      'hin': 'hi',  # hindi
      'ori': 'or',  # oriya
      'tam': 'ta',  # tamil
      'pan': 'pa',  # punjabi
      'asm': 'as',  # assamese
      'ben': 'bn',  # bengali
      'guj': 'gu',  # gujarati
      'mal': 'ml',  # malayalam
      'mar': 'mr',  # marathi
      'snd': 'sd',  # sindhi for test
      'mri': 'mi',  # maori
      'khm': 'km',  # khmer
      'lug': 'lg',  # ganda
      'tel': 'te',  # telugu
      'urd': 'ur',  # urdu
      'kan': 'kn',  # kannada
  }
  
subject: Add kannada mapping