Web Reference: Jul 15, 2025 · Measuring the execution time of a Python program is useful for performance analysis, benchmarking, and optimization. Python provides several built-in modules to achieve this with ease. In this article, we'll explore different ways to measure how long a Python program takes to run. Oct 13, 2009 · To measure a Python program's execution time, use the time module. Record the start time with time .time () before the code and the end time after. Subtract start from end to get the duration. For precise timing, use time. perf_ counter () instead, which provides better accuracy for performance testing. We often come across two terms to measure the execution time: Wall clock time and CPU time. So it is essential to define and differentiate these two terms. 1. Wall time (also known as clock time or wall-clock time) is simply the total time elapsed during the measurement. It’s the time you can measure with a stopwatch. It is the difference between t...
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