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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_callable_method_dict(obj):
 """Returns a dictionary of callable methods of object `obj`. @param obj: ZOS API Python COM object @return: a dictionary of callable methods Notes: the function only returns the callable attributes that are listed by dir() function. Properties are not returned. """

    methodDict = {}
    for methodStr in dir(obj):
        method = getattr(obj, methodStr, 'none')
        if callable(method) and not methodStr.startswith('_'):
            methodDict[methodStr] = method
    return methodDict