convert string variable to block

[KLFgrm]

Good morning Forum,

I want to decrypt (AES encryption) a string e.g. '0\xca\xfa\xd6A\x89\xab ...'
Now I write this string into a variable VAR
To convert this string into blocks with a b in front of the string: VAR=b'0\xca\xfa\xd6A\x89\xab ...'
That works.

Now I have a string variable VAR='0\xca\xfa\xd6A\x89\xab ...' (without b in front)
I convert this VAR into blocks like this: VAR = bytes(VAR, 'utf-8')
I get the b in front of VAR, but now I get a double backslash instead of this single backslash in VAR
How is it possible to set this b sign in front of VAR with single backslash in VAR?

Thanks a lot for a tip
Klaus

[shariltumin]

You can try this:

>>> V = '0\xca\xfa\xd6A'
>>> B = bytes([ord(i) for i in V])
>>> V
'0\xca\xfa\xd6A'
>>> B
b'0\xca\xfa\xd6A'
>>> 

[KLFgrm]

Wow,
THIS WORKS FINE !!!
Thanks a lot for your very fast and valuable reponse

[mendenm]

A possibly slight neater idiom might be:

B = bytes(map(ord,V))

Since map() returns an iterator, this avoids creating a real list in the translation.

[shariltumin]

Nice!