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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 create_temporaries(self, r=True, f=True):
 """Allocate and store reusable temporaries. Existing temporaries are overridden. Parameters r : bool, optional Create temporary for the real space f : bool, optional Create temporary for the frequency space Notes ----- To save memory, clear the temporaries when the transform is no longer used. See Also -------- clear_temporaries clear_fftw_plan : can also hold references to the temporaries """

        inverse = isinstance(self, FourierTransformInverse)

        if inverse:
            rspace = self.range
            fspace = self.domain
        else:
            rspace = self.domain
            fspace = self.range

        if r:
            self._tmp_r = rspace.element().asarray()
        if f:
            self._tmp_f = fspace.element().asarray()