Stop Wasting Hours Optimizing the Wrong Code — Use Python Profiling | CodeToAGI EP48
You just spent 3 hours optimizing a function… and it’s still just as slow.
You were fixing the wrong part the whole time.
In this episode you’ll learn exactly how to stop guessing and start measuring with Python’s best profiling tools:
✅ timeit → trustworthy micro-benchmarks
✅ cProfile → full function-by-function breakdown
✅ line_profiler → exactly which LINE is killing performance
✅ memory_profiler → catch memory leaks line by line
✅ The correct optimization workflow (Measure → Fix → Re-measure)
Perfect for Python developers, AI engineers, and anyone tired of slow code.
⏱ CHAPTERS:
0:00 - The 3-hour optimization trap
0:45 - Why your intuition about speed is usually wrong
2:10 - timeit basics (and why it beats manual timing)
3:30 - Manual timing vs timeit (side-by-side)
4:50 - cProfile — finding the real bottleneck
6:10 - LIVE: Profiling a slow data pipeline
7:15 - Quick favor (please!)
7:45 - line_profiler (line-by-line magic)
9:00 - memory_profiler (track memory leaks)
10:15 - Where this is used in real AI & production code
11:30 - Common profiling mistakes
12:30 - Mini project: Full optimization workflow
13:45 - Challenge + Summary
🛠 Tools covered: timeit, cProfile, pstats, kernprof, line_profiler, memory_profiler
💬 What will you profile first? Drop your before/after results below — I reply to every comment!
📌 Next Episode (Ep 49): Building Professional CLI Tools with argparse & typer
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Free Python → Agentic AI Course:
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