REFACTOR: Leverage f-string instead of format

[SMoraisAnsys]

We have deprecated IronPython so we should be able to use f-strings instead of working with format or strings addition.

For example

var = "dummy"

# Use f-strings
print(f"This is my value: {var} !")

# Remove code with format or string addition
print(f"This is my value: {} !".format(var))
print(f"This is my value: + var + " !")

Updating this will improve readability and follow the push from the Python ecosystem.
This should be a good entry point for new contributors.