py-spy ☆

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Description:
Sampling profiler for Python programs

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: profiler python performance developer-tool flamegraph

Install: brew install py-spy

About:
PySpy is a command-line sampling profiler for Python programs that allows you to visualize the performance of your code without modifying it. It works by sampling the call stack of running Python processes at high frequency, providing accurate CPU usage statistics. The tool generates flame graphs and other visualizations to help pinpoint performance bottlenecks efficiently.

Key Features:

Zero-code instrumentation required
Generates interactive flame graphs
Low overhead sampling
Supports profiling of running processes

Use Cases:

Identifying CPU bottlenecks in production Python applications
Analyzing performance of long-running Python processes
Debugging slow Python scripts without code modification

Alternatives:

cProfile – Built-in Python profiler requiring code modification, less suitable for production
Austin – Similar sampling profiler with different visualization options

Version History

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