bloomberg/pystack

Health v2 · maintenance only

Adoption not part of the score

1211 stars · 72 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

PyStack is a CLI tool that inspects and prints the stack frames of a running Python process or a Python core dump, including GIL state, garbage collection status, native frames, and local variables. It works safely on live processes and tolerates stripped binaries and memory corruption.

Use cases

• debug a hanging python process
• get stack trace from python core dump
• find out what a slow python process is doing
• inspect python threads without stopping the process
• debug python crash with memory corruption
• report thread stacks when pytest tests get stuck

When to choose

• you need stack traces from running Python processes or core dumps on Linux
• the interpreter binary is stripped, optimized, or lacks debug info
• you need native (C/C++) and Python frames interleaved
• you want fast core dump analysis compared to GDB

When to avoid

• you need a cross-platform debugger on macOS or Windows
• you need an interactive stepping debugger rather than a snapshot
• you need to modify or control the target process

Facets

cli-tool · maturity active

developer-tools tracing testing developer-tools python cli stack-trace core-dump debugging cpython-internals pytest-plugin python linux

Member repositories

For agents

markdown · JSON · MCP: product_card(name="bloomberg/pystack")