a = 321

b = 12

print(a + b)

print(a - b)

print(a * b)

print(a / b)

print(a // b) # 整除

print(a % b) # 模

print(a ** b) # 指数

a = 100

b = 12.345

c = 1 + 5j # 这个j是个啥意思

d = 'hello, world'

e = True

print(type(a)) # <class 'int'>

print(type(b)) # <class 'float'>

print(type(c)) # <class 'complex'> 复数

print(type(d)) # <class 'str'>

print(type(e)) # <class 'bool'>

# 比较运算符 和 逻辑运算符

flag0 = 1 == 1

flag1 = 3 > 2

flag2 = 2 < 1

flag3 = flag1 and flag2

flag4 = flag1 or flag2

flag5 = not (1 != 2)

print('flag0 =', flag0) # flag0 = True

print('flag1 =', flag1) # flag1 = True

print('flag2 =', flag2) # flag2 = False

print('flag3 =', flag3) # flag3 = False

print('flag4 =', flag4) # flag4 = True

print('flag5 =', flag5) # flag5 = False

# 获取输入 类型转换

a = int(input('a = '))

b = int(input('b = '))

# 格式化输入 第四个百分号表示呢容来源，对应相等

print('%d + %d = %d' % (a, b, a + b))

"""

输入年份 如果是闰年输出True 否则输出False

"""

year = int(input('请输入年份: '))

# 如果代码太长写成一行不便于阅读 可以使用\对代码进行折行

is_leap = year % 4 == 0 and year % 100 != 0 or \

year % 400 == 0

print(is_leap)