Convert byte string to bytes or bytearray

python byte bytearray

61,766

Solution 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'
>>>

Solution 2

From string to array of bytes:

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

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

and back to string:

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

61,766

IAbstract

From grass roots AppleSoft Basic and Assembly, to VB6 and C#/VB.NET - I have seen coding evolve into something anyone can do. However, it takes serious dedication to become a programmer. I have been working with MEF to better learn usage and techniques. I am also interested in open source projects and looking for opportunities with XNA. I have experience with TCP, Sql and MySql, and Lua integration. Also, I am looking to gain some experience with Ruby. Never 'try', always 'do'. 'Try' is an ingredient for failure - paraphrased from 'I Love You Man'. #SOreadytohelp

Updated on February 10, 2020

Comments

IAbstract over 4 years
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?
IAbstract over 8 years

So I need to replace \x with a space first?
IAbstract over 8 years

I just realized that b'\x00\x00\x00\x00\x07\x80\x00\x03' is iterable. Thanks.
RafaelCaballero over 8 years

No, just a = bytearray(b'\x00\x00\x00\x00\x07\x80\x00\x03')
RafaelCaballero over 8 years

Be careful: using lists b = list(a) allows doing (by mistake) b[5] = 1550, because b is not an array of bytes. However, if b = bytearray(a) , then b[5] = 1550 gives an error, because 1550 is not a byte.
Sadique Khan over 2 years

'str' object cannot be interpreted as an integer