Here is the same Python class, implemented as a Python dataclass: from dataclasses import dataclass @dataclass class Book: '''Object for tracking physical books in a collection.''' name ...

Once you know how to add and use a Python module, you will greatly extend the capabilities of the language. A Python module is an external class or ... Then “import” that file as you now ...

so he decided to write an arithmetic expression parser in Python. It came out in about 100 lines of code. Interpreting math expressions is one of those things that seems simple until you get into it.