# 定义一个整数类型的变量
age = 20
# 定义一个字符串类型的变量
name = "John"
# 定义一个浮点数类型的变量
height = 1.75

# 布尔值
is_student = True
# 列表，可包含不同类型的数据
fruits = ["apple", "banana", 3.14]
# 元组，不可变的序列
coordinates = (10, 20)
# 集合，无序且不包含重复元素
numbers = {1, 2, 3, 3}
# 字典，以键 - 值对的形式存储数据
person = {"name": "Alice", "age": 25, "city": "New York"}

a = 10
b = 3
print(a + b)  
print(a - b)  
print(a * b)  
print(a / b)  
print(a % b)  
print(a ** b) 
print(a // b) 

x = 5
y = 7
print(x == y)  
print(x!= y)  
print(x > y)  
print(x < y)  
print(x >= y) 
print(x <= y) 

p = True
q = False
print(p and q)  
print(p or q)  
print(not p)  

score = 85
if score >= 90:
    print("优秀")
elif score >= 70:
    print("良好")
else:
    print("合格")

fruits = ["apple", "banana", "cherry"]
for fruit in fruits:
    print(fruit)

count = 0
while count < 5:
    print(count)
    count += 1

def add_numbers(a, b):
    return a + b

result = add_numbers(3, 5)
print(result)

print("Hello, World!")
name = "Bob"
age = 30
print("姓名:", name, "年龄:", age)