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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_converter_module(sk_obj):
 """ Returns the module holding the conversion functions for a particular model). """

    try:
        cv_idx = _converter_lookup[sk_obj.__class__]
    except KeyError:
        raise ValueError(
                "Transformer '%s' not supported; supported transformers are %s."
                % (repr(sk_obj),
                    ",".join(k.__name__ for k in _converter_module_list)))

    return _converter_module_list[cv_idx]