You will see that there are 3 files: concat_way.py , print_if_way.py , one_line_way.py

To run each of them only python is needed and you just need to run on a terminal:

python <name_of_file.py>

concat_way.py , print_if_way.py are very similar, the difference is that one concats on a variable and print at the end and the other make prints inside the conditional.

one_line_way.py is the shorter one is a one line statement plus the if __name__ to make it as a main program for the interpreter.