Gets a reaction from the Materials Project.

        Args:
            reactants ([str]): List of formulas
            products ([str]): List of formulas

        Returns:
            rxn

def get_reaction(self, reactants, products):
        """
        Gets a reaction from the Materials Project.

        Args:
            reactants ([str]): List of formulas
            products ([str]): List of formulas

        Returns:
            rxn
        """
        return self._make_request("/reaction",
                                  payload={"reactants[]": reactants,
                                           "products[]": products}, mp_decode=False)