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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 _do_analysis(options):
 """ Do analysis for a single run, as specified by options. Parameters options : dict Option names and values for analysis """


    module = _function_location(options)
    core_results = _call_analysis_function(options, module)

    if module == 'emp' and ('models' in options.keys()):
        fit_results = _fit_models(options, core_results)
    else:
        fit_results = None

    _save_results(options, module, core_results, fit_results)