将字节字符串转换为字节或bytearray

Question

I have a string as follows:

  b'\x00\x00\x00\x00\x07\x80\x00\x03'

How can I convert this to an array of bytes? ... and back to a string from the bytes?

Answer 1

in python 3:

>>> a=b'\x00\x00\x00\x00\x07\x80\x00\x03'
>>> b = list(a)
>>> b
[0, 0, 0, 0, 7, 128, 0, 3]
>>> c = bytes(b)
>>> c
b'\x00\x00\x00\x00\x07\x80\x00\x03'
>>>

Answer 2

From string to array of bytes:

a = bytearray.fromhex('00 00 00 00 07 80 00 03')

or

a = bytearray(b'\x00\x00\x00\x00\x07\x80\x00\x03')

and back to string:

key = ''.join(chr(x) for x in a)