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Dictionary merging in Python 3.5+

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Table of Contents

  • Get to Know Python’s New profiling Package
  • Compare Tracing and Sampling Profilers
    • How Tracing Profilers Work
    • How Sampling Profilers Work
    • When to Use Which
  • Take Python 3.15’s Sampling Profiler for a Spin
    • Set Up Python 3.15 With uv
    • Profile a Whole Program Run
    • Split Wall-Clock Time From CPU Time
  • Profile Threads, Async Tasks, and Native Code
    • Watch Your Threads Fight for the GIL
    • Profile Async Code Task by Task
    • See Where Python Hands Off to Native Code
  • Turn Samples Into Pictures
    • Explore an Interactive Flame Graph
    • Read a Line-Level Heatmap
    • Export to Firefox Profiler and Other Tools
  • Record Binary Profiles and Replay Them Later
    • Capture Once, Convert Anytime
    • Prove Your Fix With a Differential Flame Graph
    • Read the Red When a Fix Removes Work
  • Inspect a Live Python Process
    • Attach to a Running Process
    • Watch Live Statistics in Your Terminal
    • Zoom in on Single Bytecode Instructions