Injecting a variable inside a string, in a specific location

Question

I have this line:

assert response.headers['Content-Disposition'] == 'attachment; filename=myFile.txt'

In the second string of the line ('attachment; filename=myFile.txt')

I want to remove the hardcoded filename (myFile.txt) and replace it with a variable that i have.

Like printf() in C, in a way, replacing the string at that exact location with a variable.

Answer 1

You could use an f-string:

fileName = 'myFile.txt'
# ...
assert response.headers['Content-Disposition'] == f'attachment; filename={fileName}'