python, format string

Question

I am trying to build a format string with lazy argument, eg I need smth like:

\"%s \\%s %s\" % (\'foo\', \'bar\') # \"foo %s bar\"

how can

Answer 1

Python 3.6 now supports shorthand literal string interpolation with PEP 498. For your use case, the new syntax allows:

var1 = 'foo'
var2 = 'bar'
print(f"{var1} %s {var2}")