name = "李明瑞"
student_no = 119
price = 9
weight = 5
money = 45
scale = 0.22
print("我叫%s, 请多多关照!"%name)
print("我的学号是%d"%student_no)
print("西瓜单价是%.2f元/斤，购买%.2f斤，需要支付%.2f元"%(price,weight,money))
print("数据 比例是%.2f%%"%(scale*100))
