Bit operation, all of the numbers stored in the computer as binary, bit operation is the operation of the bin
| Bitwise Operators | Explanation |
|---|---|
| << | Bitwise left shift, left shift is multiplied by n bits corresponding to n-th power of 2 |
| >> | Bitwise right, left by n bits is divided by n-th power of 2 |
| & | Bitwise with the same number of bits and the result is 1 bit to 1 |
| l | Bit or binary digit or bit to 1 1 results |
| ^ | Bitwise XOR, a different number of bits is 1 bit result |
| ~ | Bitwise binary bits 0 and 1 bit results interchangeably |
Bitwise left shift example
a=11
b=a<<3 # 将 a 左移三位
print("下面是十进制")
print(a)
print(b) # b=a*(2**3)
print("下面是二进制")
#print(bin(a)) # 转化为二进制显示
print(bin(a)[2:]) # 切片，去掉前面的：0b
print(bin(b)[2:]) # 二进制右边补上三个000
Other examples
a=3
b=2
print("二进制："+bin(a)[2:]+" a十进制：%d"%a) # 显示二进制数
print("二进制："+bin(b)[2:]+" b十进制：%d"%b)
print("按位与："+bin(a&b)+" 位与后是：%d"%(a&b)) # 都是1才是1
print("按位或："+bin(a|b)+" 位或后是：%d"%(a|b)) # 有1就是1
print("按位取反"+bin(~a)+" 位反后是：%d"%~a) # 结果是：a 的倒数-1
