docs: def import_sanitizer(sanitizer):
      """
      Imports the sanitizer python module.
  
      :param sanitizer: Sanitizer python module file.
      :type sanitizer: unicode
      :return: Module.
      :rtype: object
      """
  
      directory = os.path.dirname(sanitizer)
      not directory in sys.path and sys.path.append(directory)
  
      namespace = __import__(foundations.strings.get_splitext_basename(sanitizer))
      if hasattr(namespace, "bleach"):
          return namespace
      else:
          raise foundations.exceptions.ProgrammingError(
              "{0} | '{1}' is not a valid sanitizer module file!".format(sanitizer))