Python Hunter
Trace Python code execution with powerful filters and custom actions. Debug, log, and inspect code behavior without complex setup or storage.
Hunter is a flexible Python code tracing toolkit designed for debugging, logging, inspection, and understanding complex code execution flows. It allows you to precisely control what gets traced and how it's presented.
Key features include:
- Powerful Filtering: Utilize a flexible query Domain Specific Language (DSL) to filter trace events based on module name, function name, line number, source code content, variable values, or custom predicate functions. You can easily exclude standard library code or focus on specific parts of your application.
- Customizable Actions: Define what happens when a filter matches. Built-in actions include
CallPrinter(shows call/return flow),CodePrinter(displays executed source lines), andVarsPrinter(inspects local variables). You can even trigger apdbsession using theDebuggeraction at specific points. - Process Tracing: Attach to and trace other running Python processes, similar to
strace(requires GDB or a small code addition usinghunter.remote). - Environment Variable Activation: Easily enable tracing for an application run using the
PYTHONHUNTERenvironment variable, configuring filters and actions directly from the command line. - Low Overhead: Designed for simplicity without IPC, threads, or persistent storage. An optional Cython extension provides improved performance for filtering.
Tags:
Starlight
pdoc
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