Combine f-string and raw string literal

I’m wondering how to use an f-string whilst using r to get a raw string literal. I currently have it as below but would like the option of allowing any name to replace Alex I was thinking adding an f-string and then replacing Alex with curly braces and putting username inside but this doesn’t work with the r.

username = input('Enter name')
download_folder = r'C:UsersAlexDownloads'

Answer

You can combine the f for an f-string with the r for a raw string:

user = 'Alex'
dirToSee = fr'C:Users{user}Downloads'
print (dirToSee) # prints C:UsersAlexDownloads

The r only disables backslash escape sequence processing, not f-string processing.

Quoting the docs:

The ‘f’ may be combined with ‘r’, but not with ‘b’ or ‘u’, therefore raw formatted strings are possible, but formatted bytes literals are not.

…

Unless an ‘r’ or ‘R’ prefix is present, escape sequences in string and bytes literals are interpreted…