Python 3 Deep Dive Part 4 Oop High Quality Portable
Each instance of DataPoint allocates a heap dictionary, consuming roughly 100 to 150 bytes of metadata overhead beyond the actual data. The Solution: Optimized Memory Allocation
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Sized.register(MyContainer) # Now MyContainer is considered a subclass of Sized Each instance of DataPoint allocates a heap dictionary,
Notice how B shifts control straight to C instead of A . That is because super() finds the next class inline along the , not the immediate parent. Summary Cheat Sheet for High-Quality Python OOP Primary Use Case Core Benefit __slots__ Mass data handling, real-time logging, data streams. That is because super() finds the next class
However, as the Zen of Python suggests, "explicit is better than implicit." Metaclasses are powerful tools reserved for framework authors and library developers. Most application code should not require metaclasses. When they are appropriate, thorough documentation is essential—metaclasses can create "magic" that confuses other developers if not explained clearly.
The aim is to elevate your code quality. By the end, you will not just understand how to use classes, but why Python’s OOP system works the way it does, and how to wield its features to write truly elegant and robust software.
class Car: def (self, engine: Engine): self._engine = engine def drive(self): self._engine.start()