import mathimport cmathdef qudratic(a,b,c):    if not isinstance(a,(int,float)):        raise TypeError("bad operand type")    if not isinstance(b,(int,float)):        raise TypeError("bad operand type")    if not isinstance(c,(int,float)):        raise TypeError("bad operand type")    delta = cmath.sqrt(b**2-4*a*c)    if abs(delta) != delta:        print("此方程无实数解,但有以下虚数解:")    else:        delta = math.sqrt(b ** 2 - 4 * a * c)        print("此方程有实数解如下:")    x_01 = (-b + delta)/(2*a)    x_02 = (-b - delta)/(2*a)    d = {}    d.fromkeys(("x1","x2"))    d["x1"] = x_01    d["x2"] = x_02    l_01 = d.items()    print(d)    print(l_01)    return x_01,x_02,l_01x = qudratic(10,-13,10)