python __slots__
The New style classes of Python
The only difference between the earlier code and this one is that we added the __slots__ class attribute. We can notice that the class dictionary is different.
pickle — Python object serialization — Python 3.13.5 documentation
A Python wrapper for the snap7 PLC communication library - gijzelaerr/python-snap7 ... This is a Python wrapper for Snap7, an open-source, 32/64 bit, multi-platform Ethernet communication suite for interfacing natively with Siemens S7 PLCs.
Don't forget about __slots__ in Python! | by AM
Want to support the behavior of built-in functions and method calls in your Python classes? Magic methods in Python let you do just that!