Developer-friendly performance profiling utility for Python

WhySlow simplifies the usage of cProfile and snakeviz. It offers the fastest way to get from slow code to flame chart and start the performance optimization investigations.

pip install whyslow

There are three ways to use this profiler.

from whyslow import profile

@profile()
def my_slow_function():
    # do expensive operations

from whyslow import profile

with profile():
    # some expensive operations

$ python -m whyslow my-slow-script.py

MIT License