Python3 f string(string.format replacement)

 https://realpython.com/python-f-strings/

Simple Syntax

The syntax is similar to the one you used with str.format() but less verbose. Look at how easily readable this is:

>>>

>>> name = "Eric"
>>> age = 74
>>> f"Hello, {name}. You are {age}."
'Hello, Eric. You are 74.'

It would also be valid to use a capital letter F:

>>>

>>> F"Hello, {name}. You are {age}."
'Hello, Eric. You are 74.'