Python 3.13 Changes Direct

dict_test = """ for i in range(1000): x = d.get(i, 0) """

import asyncio import time async def process_item(item): await asyncio.sleep(0.001) # Simulated I/O return item * 2 python 3.13 changes

# Async context manager performance async_setup = """ import asyncio class AsyncCM: async def (self): return self async def aexit (self, *args): pass """ dict_test = """ for i in range(1000): x = d

async def main_new_way(): # Python 3.13 - same syntax, but ~10-15% faster # Task creation and scheduling overhead reduced async with asyncio.TaskGroup() as tg: tasks = [tg.create_task(process_item(i)) for i in range(1000)] return [task.result() for task in tasks] async def benchmark(): start = time.perf_counter() await main_old_way() old_time = time.perf_counter() - start The copy Module Gets replace() Method A new

if sys.version_info < (3, 13): warnings.warn("Not running on Python 3.13", RuntimeWarning) return

dp = DataProcessor() New: 'DataProcessor' object has no attribute 'process'. Did you mean: 'process_data'? try: dp.process() except AttributeError as e: print(e) 2. The copy Module Gets replace() Method A new method for creating modified copies of objects without mutation.