n_invocation_and_creation.html#function_invocation_and_creation.boost_python_args_hpp.introduction.keyword_expressions" title="keyword-expressions">keyword-expressions</a>
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<p>
            A keyword-expression results in an object which holds a sequence of
            <a class="link" href="glossary.html#ntbs">ntbs</a>es, and whose type encodes the number
            of keywords specified. The keyword-expression may contain default values
            for some or all of the keywords it 