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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 import_cls(cls_name):
 """Import class by its fully qualified name. In terms of current example it is just a small helper function. Please, don't use it in production approaches. """

    path_components = cls_name.split('.')
    module = __import__('.'.join(path_components[:-1]),
                        locals(),
                        globals(),
                        fromlist=path_components[-1:])
    return getattr(module, path_components[-1])