Count Objects Created by a Class

Create a base class InstanceCounter that automatically keeps two counters for each concrete class that inherits from it: - total_created(): the total number of instances that have ever been created for that specific class - current_alive(): the number of instances of that specific class that are currently alive (not yet garbage collected) Requirements and subtleties: - Counters must be maintained per class (each subclass gets its own counters, independent from the base class and other subclasses). - Counting must occur even if a subclass overrides __init__ and does not call super().__init__ (hint: use __new__). - Use a finalizer (weakref.finalize) or similar mechanism so that current_alive decreases when an object is garbage-collected (don't rely solely on __del__). - Provide class methods total_created() and current_alive() that return integers. - Implementation must work without requiring subclasses to remember to call super().__init__. You should provide an implementation of InstanceCounter. Tests will create dynamic subclasses of InstanceCounter to verify per-class isolation and garbage-collection behavior.

Learn to use class attributes, __new__, and finalizers (weakref.finalize) to maintain per-class instance counters that are robust even when subclasses override __init__.

Use only the Python standard library. Implementation must not require subclasses to call super().__init__ to be counted. Use per-class storage for counters.