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For 2023 (and 2024 ...) - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))
Profiling your Python program

Python's profiler lets you run code and log statistics, and the pstats module allows you to anaylse the resulting statistics. New example from last week's Intermediate Python Course is [here].

  import cProfile
  import pstats
  
  import railway
  
  cProfile.run("railway.test_code()","profile.out")
  
  result = pstats.Stats("profile.out")
  result.sort_stats("ncalls")
  
  result.print_stats()
  result.print_callees()


As ever with Python, the code example is largely self-describing ... take a look at the source (linked above) to show you some sample output too. The call being profiled is [here] amd the data may be viewed [here]. Data can be downloaded from [here] (that way tabs and spaces come through correct if you want to run the program!)

(written 2016-11-01)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
Y212 - Python - Code testing, patterns, profiles and optimisation.
  [235] Preparation for a day's work - (2005-03-04)
  [1140] Python GTK - Widget, Packing, Event and Feedback example - (2007-04-09)
  [1146] __new__ v __init__ - python constructor alternatives? - (2007-04-14)
  [1148] Python decorators - wrapping a method call in extra code - (2007-04-15)
  [1555] Advanced Python, Perl, PHP and Tcl training courses / classes - (2008-02-25)
  [2123] Using Python with OpenOffice - (2009-04-09)
  [2616] Defining a static method - Java, Python and Ruby - (2010-02-01)
  [3441] Pressing ^C in a Python program. Also Progress Bar. - (2011-09-15)
  [3442] A demonstration of how many Python facilities work together - (2011-09-16)
  [3464] Passing optional and named parameters to python methods - (2011-10-04)
  [3478] Testing your Python classes with the unittest package - how to - (2011-10-14)
  [3658] Using Make for a distribution - (2012-03-17)
  [4090] Test Driven Development in Python - Customer Comes First - (2013-05-16)
  [4326] Learning to program - comments, documentation and test code - (2014-11-22)
  [4344] Python base and inherited classes, test harness and unit testing - new examples - (2014-12-07)
  [4446] Combining tests into suites, and suites into bigger suites - Python and unittest - (2015-03-01)
  [4470] Testing in Python 3 - unittest, doctest and __name__ == __main__ too. - (2015-04-21)
  [4538] Flask and unittest - hello web app test world - (2015-10-15)
  [4540] Unittest of a Flask application including forms - (2015-10-15)
  [4542] The principle of mocking - and the Python Mock package - (2015-10-17)
  [4617] Pytest - starting example - (2016-01-07)
  [4618] Pytest - second example beyond hello world - (2016-01-08)


Back to
Well House Manor - Still five out of five!
Previous and next
or
Horse's mouth home
Forward to
with in Python - examples of use, and of defining your own context
Some other Articles
Celebrating our diversity rather than discriminating for it
Nesting decorators
Defining an object that is a modified standard type in Python
with in Python - examples of use, and of defining your own context
Profiling your Python program
Well House Manor - Still five out of five!
The technical article feed continues - personal updates more proactive on Facebook now!
Equality (in Python)
A reminder of the key issues to consider in moving from Python 2 to Python 3
Convering from Python 2 to Python 3 - an update, and the 2to3 utility
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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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