import random
class Rectangle:
    def __init__(self, l, w):
        self.set_length(l)
        self.set_width(w)

    def set_length(self, l):
        if not isinstance(l, (int, float)):
            raise TypeError()
        elif l <= 0:
            raise ValueError('invalid length:'+str(l))

        self.__length = l

    def set_width(self, w):
        if not isinstance(w, (int, float)):
            raise TypeError()
        elif w <= 0:
            raise ValueError('invalid width:'+str(w))

        self.__width = w

    def __str__(self):
        return '(' + str(self.__length) + ", " + str(self.__width) + ")"

loop = True
while loop:
    try:
        r1 = Rectangle(random.randrange(3), random.randrange(3))
        loop = False
    except:
        loop = True
print(r1)

loop = True
while loop:
    try:
        r2 = Rectangle(random.randrange(3), random.randrange(3))
        loop = False
    except:
        loop = True
print(r2)

loop = True
while loop:
    try:
        r3 = Rectangle(random.randrange(3), random.randrange(3))
        loop = False
    except:
        loop = True
print(r3)