数据运算-Day1

一、数据运算

1、算数运算符

以下假设变量：a=10，b=20:

 

2、比较运算符

 

3、赋值运算符

 

4、逻辑运算符

以下假设变量a为10，b为20

 

5、成员运算符

 

 

6、身份运算符

身份运算符用于比较两个对象的存储单元

 

7、位运算符

以下变量a为60，b为13

a = 60  # 60 = 0011 1100
b = 13  # 13 = 0000 1101
c = 0

c = a & b  # 12 = 0000 1100

print("Line 1 - Value of c is ",c)

c = a | b # 61 = 0011 1101
print("Line 2 - Value of c is ", c)

c = a ^ b  # 49 = 0011 0001 #相同为0，不同为1
print("Line 3 - Value of c is ", c)

c = ~a  # -61 = 1100 0011
print("Line 4 - Value of c is ", c)

c = a << 2  # 240 = 1111 0000
print("Line 5 - Value of c is ", c)

c = a >> 2  # 15 = 0000 1111
print("Line 6 - Value of c is ", c)

#返回值：
Line 1 - Value of c is  12
Line 2 - Value of c is  61
Line 3 - Value of c is  49
Line 4 - Value of c is  -61
Line 5 - Value of c is  240
Line 6 - Value of c is  15

 

8、运算符优先级

下面列出了从最高到最低优先级的所有运算符：