#大家可以看一下 两道题的内容

第n次刷第4章第3题的代码。朝纲用来函数的概念

def judge_num(a, b, c, d):
    return (a * d) - (b * c)


def run_cont(a, b, c, d, e, f):
    cc = judge_num(a, b, c, d)

    if cc == 0:
        print("The equation has no solution")
    else:
        x = ((e * d) - (b * f)) / cc
        y = ((a * f) - (e * c)) / cc
        print("x is {:.2f} and y is {:.2f}".format(x, y))


run_cont(9, 4, 3, -5, -6, -21)
run_cont(1, 2, 2, 4, 4, 5)

接下来是main代码段

def main():
    run_count1 = exCode07.linear_equation(9, 4, 3, -5, -6, -21)
    run_count2 = exCode07.linear_equation(1, 2, 2, 4, 4, 5)

    print(run_count1.method_between())
    print(run_count2.method_between())

main()

接下来是linearEquation代码
但是类的名字已改为linea_equation

class linear_equation:
    def __init__(self, a, b, c, d, e, f):
        self.a = a
        self.b = b
        self.c = c
        self.d = d
        self.e = e
        self.f = f

    def set_a(self, a):
        self.a = a

    def get_a(self):
        return self.a

    def set_b(self, b):
        self.b = b

    def get_b(self):
        return self.b

    def set_c(self, c):
        self.c = c

    def get_c(self):
        return self.c

    def set_d(self, d):
        self.d = d

    def get_d(self):
        return self.d

    def set_e(self, e):
        self.e = e

    def get_e(self):
        return self.e

    def set_f(self, f):
        self.f = f

    def get_f(self):
        return self.f

    def is_solvable(self):
        a1 = self.a * self.d
        a2 = self.b * self.c
        zero_method = a1 - a2
        if zero_method != 0:
            return a1 - a2
        #这个代码如果少了影响运行
        else:
            return False

    def get_x(self):
        a_1 = self.e * self.d
        a_2 = self.b * self.f
        return (a_1 - a_2) / linear_equation.is_solvable(self)


    def get_y(self):
        a_1 = self.a * self.f
        a_2 = self.e * self.c
        return (a_1 - a_2) / linear_equation.is_solvable(self)



    def method_between(self):
        if linear_equation.is_solvable(self) != 0:
            a = linear_equation.get_x(self)
            b = linear_equation.get_y(self)
            return f"x:{a} and y:{b}"
        else:
            return "This is not result"