How to merge f string with b string in one line usage in Python

Question

I can create b-sting this way:
name_binary = b'Adam'
but if I have variable like name='Adam' and I want to make at once usage of f-string and b-string:
name_binary = fb'{name}'
I get:

   File "<input>", line 1
    c = fb'{a}'
              ^
SyntaxError: invalid syntax

I know that I can do:
name_binary = name.encode('utf-8')

But technicality is that possible by using b and f together as on my example?

How would Python know which encoding should be used for your variable then ? — bruno desthuilliers, Dec 21 '18 at 09:27

score 34 · Accepted Answer · answered Dec 21 '18 at 09:30

No, what you want has been proposed but rejected till now.

Read more about it in PEP-489:

No binary f-strings

For the same reason that we don't support bytes.format(), you may not combine 'f' with 'b' string literals.

The options you have (like you already mentioned) would be:

name_binary = f'{name}'.encode('utf-8')

or

name_binary = name.encode('utf-8')

How to merge f string with b string in one line usage in Python

1 Answers1