The pstats Module

The pstats module is a tool that analyzes data collected by the Python profiler, as Example 11-5 shows.

Example 11-5. Using the pstats Module

File: pstats-example-1.py

import pstats
import profile

def func1():
 for i in range(1000):
 pass

def func2():
 for i in range(1000):
 func1()

p = profile.Profile()
p.run("func2()")

s = pstats.Stats(p)
s.sort_stats("time", "name").print_stats()

 1003 function calls in 1.574 CPU seconds

 Ordered by: internal time, function name

 ncalls tottime percall cumtime percall filename:lineno(function)
 1000 1.522 0.002 1.522 0.002 pstats-example-1.py:4(func1)
 1 0.051 0.051 1.573 1.573 pstats-example-1.py:8(func2)
 1 0.001 0.001 1.574 1.574 profile:0(func2())
 1 0.000 0.000 1.573 1.573 :1(?)
 0 0.000 0.000 profile:0(profiler)