py-spy

A sampling profiler for Python programs.

• Show a live view of the functions that take the most execution time of a running process:

py-spy top --pid {pid}

• Start a program and show a live view of the functions that take the most execution time:

py-spy top -- python {path/to/file.py}

• Produce an SVG flame graph of the function call execution time:

py-spy record -o {path/to/profile.svg} --pid {pid}

• Dump the call stack of a running process:

py-spy dump --pid {pid}

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