Olzhas Arystanov olzhasar

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

	import pytest
	from typing import Any, List, Tuple
	from sqlalchemy.orm import Session
	from sqlalchemy import event


	class QueriesCounter:
	def __init__(self, db: Session):
	self._count: int = 0
	self._active: bool = False