Custom Formatters
Learn about custom formatters and get hands-on experience using the coding example.
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Overview
While these standard formatters apply to most built-in objects, it is also possible for other objects to define nonstandard specifiers. For example, if we pass a datetime object into format, we can use the specifiers used in the datetime.strftime() function, as follows:
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import datetimeimportant = datetime.datetime(2019, 10, 26, 13, 14)formatted_date = f"{important:%Y-%m-%d %I:%M%p}"print(formatted_date)
It is even possible to write custom formatters for objects we create ourselves, but that is beyond the scope of this book. Look into overriding the __format__() special method if we need to do this in our code.
The Python formatting syntax is quite flexible, but it is ...