UML class diagrams show the structure of a system by displaying classes, their attributes, methods, and relationships. Essential for documenting object-oriented designs and system architecture. Use Case Use class diagrams when you need to: Document system architecture Show class relationships and hierarchies Design …

Python metaclasses with visual explanations using Mermaid diagrams. What are Metaclasses? Metaclasses are classes that create classes. In Python, everything is an object, including classes: $$ \text{type}(\text{instance}) = \text{class} $$ $$ \text{type}(\text{class}) = \text{metaclass} $$ Class Creation Flow Basic …