class string.Formatter
The Formatter class has the following public methods:
format(format_string, *args, **kwargs)
The primary API method. It takes a format string and an arbitrary set of positional and keyword arguments. It is just a wrapper that calls vformat(). Deprecated since version 3.5: Passing a format string as keyword argument format_string has been deprecated.
vformat(format_string, args, kwargs)
This function does the actual work of formatting. It is exposed as a sepa