Is there a more efficient way of adding a variable to a string?

Question

https://code.sololearn.com/cgjPbKOqr6TI/?ref=app

Disclamer: I'm learning my first language and trying to find out what is possible and how

Answer 1

num = 7
print("number is " + str(num))
print("number is", num)
print("number is %d" % (num,))
print(f"number is {num}")

will all lead to the same result

Answer 2

Thanks