How accurate is the timeit module in Python?

How accurate is the timeit module in Python?

The timeit module in Python is designed to provide a reliable way to measure execution time of small code snippets. It minimizes the impact of background processes and system load, making it quite accurate for benchmarking.

What factors can affect its accuracy?

Factors that can affect accuracy include system load, the complexity of the code being timed, and the duration of the timing itself. Short timings can be less reliable due to overhead.

Can I use timeit for larger code segments?

While timeit is primarily for small snippets, you can use it for larger segments by wrapping them in functions. Just ensure the timing is long enough to get a reliable measurement.

Are there any alternatives to timeit?

Yes, alternatives include the perf module for more detailed benchmarking and using profiling tools like cProfile for larger applications.