# this is my first python file.
print("hello")
"""
这是多行注释。。。。
多行注释
"""
print("hello3")  # this is hello3
print("中国人")

print(10//4)
print(9%2)
print(2**3)

print("-"*40)
print("对不起  "*5)
print("-"*40)

# 变量
qq = "zhangsan"
print(qq)

# 买苹果
price = 5.0
weight = 3.2
money = price * weight
money = money - 5
print(money)