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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 solve(self, value, filter_):
 """Returns the value of an attribute of the value, or the result of a call to a function. Arguments --------- value : ? A value to solve in combination with the given filter. filter_ : dataql.resource.Filter An instance of ``Filter`` to solve with the given value. Returns ------- Depending on the source, the filter may ask for an attribute of the value, or for the result of a call to a standalone function taking the value as first argument. This method returns this attribute or result. Example ------- 1 '2015-06-01' """


        args, kwargs = filter_.get_args_and_kwargs()
        source = self.registry[value]
        return source.solve(value, filter_.name, args, kwargs)