power.py 文件源码

def _eval_expand_power_exp(self, **hints):
        """a**(n+m) -> a**n*a**m"""
        b = self.base
        e = self.exp
        if e.is_Add and e.is_commutative:
            expr = []
            for x in e.args:
                expr.append(self.func(self.base, x))
            return Mul(*expr)
        return self.func(b, e)