Python f-string: replacing newline/linebreak

Question

First off all, sorry: I'm quite certain this might be a "duplicate" but I didn't succeed finding the right solution.

I simply want to replace all linebreaks within my sql-code for logging it to one line, but Python's f-string doesn't support backslashes, so:

# Works fine (but is useless ;))
self.logger.debug(f"Executing: {sql.replace( 'C','XXX')}")

# Results in SyntaxError: 
# f-string expression part cannot include a backslash
self.logger.debug(f"Executing: {sql.replace( '\n',' ')}")

Of course there are several ways to accomplish that before the f-string, but I'd really like to keep my "log the line"-code in one line and without additional helper variables.

(Besides I think it's a quite stupid behavior: Either you can execute code within the curly brackets or you cant't...not "you can, but only without backslashes"...)

This one isn't a desired solution because of additional variables:

How to use newline '\\n' in f-string to format output in Python 3.6?

General Update The suggestion in mkrieger1s comment:

        self.logger.debug("Executing %s", sql.replace('\n',' '))

Works fine for me, but as it doesn't use f-strings at all (beeing that itself good or bad ;)), I think I can leave this question open.

Answer 1

I found possible solutions

from os import linesep

print(f'{string_with_multiple_lines.replace(linesep, " ")}')

Best,

Answer 2

You can do this

newline = '\n'
self.logger.debug(f"Executing: {sql.replace( newline,' ')}")

Answer 3

1. don't use f-strings, especially for logging
2. assign the newline to a constant and use that, which you apparently don't want to
3. use an other version of expressing a newline, chr(10) for instance

(Besides I think it's a quite stupid behavior: Either you can execute code within the curly brackets or you cant't...not "you can, but only without backslashes"...)

Feel free to take a shot at fixing it, I'm pretty sure this restriction was not added because the PEP authors and feature developers wanted it to be a pain in the ass.