def head(self, url, params=None, **kwargs):
        return self.request("HEAD", url, params=params, **kwargs)
Transform expressions into a multinomial form and figure out generators.
dataset/ETHPy150Open ecdavis/pants/pants/http/client.py/Session.head--crossover with--dataset/ETHPy150Open sympy/sympy/sympy/polys/polyutils.py/_parallel_dict_from_expr_no_gens