# Without cache start = time.perf_counter() result = fibonacci(n) normal_time = time.perf_counter() - start
dict_time = timeit.timeit(dict_test, setup=dict_setup, number=10000) print(f"Dictionary operations: dict_time:.3fs") python 3.13 changes
async_test = """ async def test(): async with AsyncCM(): pass """ # Without cache start = time
for module, message in checks: try: __import__(module) warnings.warn(f"⚠️ message") except ImportError: print(f"✓ module not used") python 3.13 changes
# List comprehension performance list_time = timeit.timeit( "[i * 2 for i in range(1000)]", number=100000 ) print(f"List comprehensions: list_time:.3fs")