>With format and % functions, you will be able to spot the variable in the argument list, which is part of the code itself. That is not always true, e.g.:

>With format and % functions, you will be able to spot the variable in the argument list, which is part of the code itself. That is not always true, e.g.: >>> x = 2 >>> print("x = {x}".format(**vars())) x = 2