--- title: Python: introducing tprof, a targeting profiler | daily.dev description: tprof is a new targeting profiler for Python 3.12+ that measures performance of specific functions rather than entire programs. Unlike traditional profilers... canonical: https://daily.dev/posts/lhhbaduyz twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Python: introducing tprof, a targeting profiler | daily.dev og:description: tprof is a new targeting profiler for Python 3.12+ that measures performance of specific functions rather than entire programs. Unlike traditional profilers... og:url: https://daily.dev/posts/lhhbaduyz og:image: https://api.daily.dev/og/posts/LhhBaduyz.png og:image:alt: Post cover image og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Python: introducing tprof, a targeting profiler **[Learn Python](https://daily.dev/sources/lpython)** · [@sophyia](https://daily.dev/sophyia) · 9 upvotes · 1 comments ## Summary tprof is a new targeting profiler for Python 3.12+ that measures performance of specific functions rather than entire programs. Unlike traditional profilers that add overhead across the whole codebase, tprof uses sys.monitoring to track only designated target functions, providing quick command-line reports with timing statistics. It supports comparison mode to benchmark "before" and "after" versions of optimized code, showing percentage improvements. The tool offers both CLI and Python API interfaces, with timing done in C to minimize overhead. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@desmondoyeyiola** · 0 upvotes > Wow this is really great > But would it be possible to show specific and precise improvement rather than percentage? ## Similar posts on daily.dev - [Python: tprof 1.3.0: now with less overhead](https://daily.dev/posts/python-tprof-1-3-0-now-with-less-overhead-z5sx5alai) · Adam Johnson · 0 upvotes · 0 comments - [profiling.sampling — Statistical profiler ¶](https://daily.dev/posts/profiling-sampling-statistical-profiler--bd9rldcma) · Hacker News · 1 upvotes · 0 comments - [Python: introducing profiling-explorer](https://daily.dev/posts/python-introducing-profiling-explorer-eb3yvhchy) · Adam Johnson · 1 upvotes · 0 comments - [Python 3.15 Has a Production Profiler. 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