问题描述
我想在 python 3.x 中将字节类型的对象转换为二进制表示.
i wanted to convert an object of type bytes to binary representation in python 3.x.
例如,我想将字节对象 b'x11' 转换为二进制表示的二进制表示 00010001(或十进制的 17).
for example, i want to convert the bytes object b'x11' to the binary representation 00010001 in binary (or 17 in decimal).
我试过了:
print(struct.unpack("h","x11"))
但我得到了:
error struct.error: unpack requires a bytes object of length 2
推荐答案
从 python 3.2 开始,您可以使用 int.from_bytes.
starting from python 3.2, you can use int.from_bytes.
第二个参数,byteorder,指定字节串的 endianness.它可以是 'big' 或 'little'.您还可以使用 sys.byteorder 来获取主机的本机字节顺序.
second argument, byteorder, specifies endianness of your bytestring. it can be either 'big' or 'little'. you can also use sys.byteorder to get your host machine's native byteorder.
import sys int.from_bytes(b'x11', byteorder=sys.byteorder) # => 17 bin(int.from_bytes(b'x11', byteorder=sys.byteorder)) # => '0b10001'