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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 dft_task(cls, mol, xc="b3lyp", **kwargs):
 """ A class method for quickly creating DFT tasks with optional cosmo parameter . Args: mol: Input molecule xc: Exchange correlation to use. \\*\\*kwargs: Any of the other kwargs supported by NwTask. Note the theory is always "dft" for a dft task. """

        t = NwTask.from_molecule(mol, theory="dft", **kwargs)
        t.theory_directives.update({"xc": xc,
                                    "mult": t.spin_multiplicity})
        return t