从实例方法打印矩形

class Rectangle:
    def __init__(self, width, height):
        self.width = width
        self.height = height

    def print_rectangle(self):
        for i in range(self.height):
            for j in range(self.width):
                print("*", end="")
            print()

# 创建一个Rectangle对象
rect = Rectangle(5, 3)
# 调用print_rectangle方法打印矩形
rect.print_rectangle()