Python profiling (cProfile, pstats, snakeviz)

profiling_demo.py

import cProfile
import pstats

with cProfile.Profile() as pr:
    routine_to_measure()
stats = pstats.Stats(pr)
stats.sort_stats(pstats.SortKey.TIME)

# print profiling result
# Method 1
stats.print_stats()

# Method 2 (better, but requires library "snakeviz")
# See: https://github.com/jiffyclub/snakeviz
stats.dump_stats(filename='result.prof')
# To view result on Linux: snakeviz result.prof
# A localhost will opened, showing profilng result on browser:
# snakeviz web server started on 127.0.0.1:8080; enter Ctrl-C to exit
# http://127.0.0.1:8080/snakeviz/user/fanurs/result.prof