Py-spy

lastmod 2025-06-12created 2025-06-122 edits

Sampling profiler for Python programs

Usage

py-spy works from the command line and takes either the PID of the program you want to sample from or the command line of the python program you want to run. py-spy has three subcommands record, top and dump:

record

py-spy supports recording profiles to a file using the record command. For example, you can generate a flame graph of your python process by going:

py-spy record -o profile.svg --pid 12345
# OR
py-spy record -o profile.svg -- python myprogram.py

See also

• Python
• Python:PerformanceTunning
• cProfile

Favorite site

• Github - benfred/py-spy
• (Python profiling) Analyzing Python code performance with py-spy and yappi — Kkeujeok-kkeujeok Coding Gongbang