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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def get_path(language):
  ''' Returns the full path to the language file '''
  filename = language.lower() + '.json'
  lang_file_path = os.path.join(_DEFAULT_DIR, filename)
  if not os.path.exists(lang_file_path):
    raise IOError('Could not find {} language file'.format(language))
  return lang_file_path