f"python str {var}" doesn't work

Question

var = "str"
print(f"this is a {var}")
gives a syntax error . How to use the f"{}" string formatting ?

Answer 1

f-string is new in Python 3.6. Unfortunately, SoloLearn is still using Python 3.5.
This works:
var = "str"
print("this is a {}".format(var))
https://www.python.org/dev/peps/pep-0498/

Answer 2

did you get?

Answer 3

The problem was with the Python version