一、算术运算符

a = 9
b = 2

#乘
result = a * b
print(‘{}*{}={}‘.format(a, b, result))

9*2=18

#除
result = a / b
print(‘{}/{}={}‘.format(a, b, result))

9/2=4.5

#幂
result = a ** b
print(‘{}**{}={}‘.format(a, b, result))

9**2=81

#整除
result = a // b
print(‘{}//{}={}‘.format(a, b, result))

9//2=4

#取模
result = a % b
print(‘{}%{}={}‘.format(a, b, result))

9%2=1

二、逻辑运算¶

n1 = int(input(‘请输入第一个数‘))
n2 = int(input(‘请输入第二个数‘))

请输入第一个数100
请输入第二个数200

result = n1 > n2
print(‘%d > %d is %s‘ %(n1, n2, result))

100 > 200 is False

result = n1 < n2
print(‘%d < %d is %s‘ %(n1, n2, result))

100 < 200 is True

result = n1 == n2
print(‘%d == %d is %s‘ %(n1, n2, result))

100 == 200 is False

result = n1 != n2
print(‘%d != %d is %s‘ %(n1, n2, result))

100 != 200 is True

UserName_Check = ‘xiaoming‘

UserName = input(‘请输入姓名：‘)  #输入错误用户名

请输入姓名：xiaoqiang

result = UserName_Check == UserName
print(‘输入匹配是：%s‘ %(result))

输入匹配是：False

UserName = input(‘请重新输入姓名：‘) #输入正确用户名

请重新输入姓名：xiaoming

result = UserName_Check == UserName
print(‘输入匹配是：%s‘ %(result))

输入匹配是：True

Num1 = 100
Num2 = 100
print(id(Num1), Num1)
print(id(Num2), Num2)
print(Num1 is Num2)

140719116754848 100
140719116754848 100
True

and 逻辑与

or 逻辑或

not 逻辑非

Num1 = 10000

Num2 = 10000

print(‘Num1:‘, Num1, id(Num1))
print(‘Num2:‘, Num2, id(Num2))
print(‘Num1 is Num2: ‘, (Num1 is Num2))

Num1: 10000 2243219552560
Num2: 10000 2243219553296
Num1 is Num2:  False

技术图片