Python’s implementation of object orientation does have a few quirks. For example, if you create a class variable, it can be read from a subclass without specifying scope like you’d expect.

Sentinels are singleton objects that typically represent some terminating (end) condition or have a special, symbolic meaning. Python's built-in None is a sentinel. Python also has other sentinels ...

In Python the automatic garbage collection works very well, but it is possible to defeat it with objects that create a reference to each other creating a “circular dependency” – see the ...

The important concept to grasp here is the idea that we are not saving Python objects into our database. We are using the attributes of a given Python object to create a new row in our database table.

Python simplifies coding with easy syntax, built-in tools, and real-world applications.Mastering basics like loops, functions ...