(cls, iterable, value=None)
return d
OD.fromkeys(S[, v]) -> New ordered dictionary with keys from S
        and values equal to v (which defaults to None).
OD.fromkeys(S[, v]) -> New ordered dictionary with keys from S
        and values equal to v (which defaults to None).
OD . fromkeys ( S [ v ] ) - > New ordered dictionary with keys from S and values equal to v ( which defaults to None ) .
def fromkeys(cls, iterable, value=None):
        '''OD.fromkeys(S[, v]) -> New ordered dictionary with keys from S
        and values equal to v (which defaults to None).

        '''
        d = cls()
        for key in iterable:
            d[key] = value
        return d
def fromkeys ( cls , iterable , value = None ) : d = cls ( ) for key in iterable : d [ key ] = value return d