def is_sum_simplify(expr): """ 表达式是否已经加法化简: 所有位置的加法进行化简 若表达式中某代数式可加法化简,则同时会进行可能的乘法化简但单独的分母加法可化简除外 :param expr: :return: """ from sympy.simplify.simplify import sum_simplify return is_same_expression(expr, sum_simplify(expr))
def _eval_simplify(self, ratio, measure): from sympy.simplify.simplify import sum_simplify return sum_simplify(self)