Smiley demonstrates how to use Python's native tracing capabilities to monitor not just what parts of your program run, but the data flowing through the program as it runs. All of the data is recorded for study after the program exits, which means you can pass different inputs and then compare the results of the runs. In this presentation, I describe the evolution of Smiley, from concept through internal API changes as I worked on the implementation. I also talk about tracing Python programs in general, and explain how the trace code in Smiley can be used to send trace data to different output destinations. Smiley demonstrates how to use Python's native tracing capabilities to monitor not just what parts of your program run, but the data flowing through the program as it runs. All of the data is recorded for study after the program exits, which means you can pass different inputs and then compare the results of the runs. In this presentation, I describe the evolution of Smiley, from concept through internal API changes as I worked on the implementation. I also talk about tracing Python programs in general, and explain how the trace code in Smiley can be used to send trace data to different output destinations. Tue, 31 May 2016 00:00:00 -0400 https://speakerdeck.com/doughellmann/how-i-built-a-power-debugger-out-of-the-standard-library-and-things-i-found-on-the-internet https://speakerdeck.com/doughellmann/how-i-built-a-power-debugger-out-of-the-standard-library-and-things-i-found-on-the-internet Python makes loading code dynamically easy, allowing you to configure and extend your application by discovering and loading extensions at runtime. This presentation will discuss the techniques for dynamic code loading used in several well-known applications and weigh the pros and cons of each approach. PyCon 2013 Python makes loading code dynamically easy, allowing you to configure and extend your application by discovering and loading extensions at runtime. This presentation will discuss the techniques for dynamic code loading used in several well-known applications and weigh the pros and cons of each approach. PyCon 2013 Sat, 16 Mar 2013 00:00:00 -0400 https://speakerdeck.com/doughellmann/dynamic-code-patterns-extending-your-applications-with-plugins https://speakerdeck.com/doughellmann/dynamic-code-patterns-extending-your-applications-with-plugins Sphinx is an incredibly useful tool for creating attractive documentation for your project, but if all you ever use it for is converting reStructuredText files to HTML you are barely scratching the surface of its power. This presentation shows how easy it is to extend Sphinx by defining new markup processors, allowing you to take your documentation to the next level. PyCon 2013 Sphinx is an incredibly useful tool for creating attractive documentation for your project, but if all you ever use it for is converting reStructuredText files to HTML you are barely scratching the surface of its power. This presentation shows how easy it is to extend Sphinx by defining new markup processors, allowing you to take your documentation to the next level. PyCon 2013 Sat, 16 Mar 2013 00:00:00 -0400 https://speakerdeck.com/doughellmann/better-documentation-through-automation-creating-docutils-and-sphinx-extensions https://speakerdeck.com/doughellmann/better-documentation-through-automation-creating-docutils-and-sphinx-extensions Presentation for PyATL discussing how virtualenvwrapper will make you a more productive Python programmer. Presentation for PyATL discussing how virtualenvwrapper will make you a more productive Python programmer. Tue, 27 Sep 2011 07:17:58 -0400 https://speakerdeck.com/doughellmann/better-development-workflows-with-virtualenvwrapper https://speakerdeck.com/doughellmann/better-development-workflows-with-virtualenvwrapper Presentation from PyCon 2011 discussing features of the modules in the Python standard library commonly overlooked or dismissed. Presentation from PyCon 2011 discussing features of the modules in the Python standard library commonly overlooked or dismissed. Tue, 27 Sep 2011 07:12:00 -0400 https://speakerdeck.com/doughellmann/hidden-treasures-of-the-standard-library https://speakerdeck.com/doughellmann/hidden-treasures-of-the-standard-library An introduction to the Python programming language organized around "The Zen of Python". An introduction to the Python programming language organized around "The Zen of Python". Tue, 27 Sep 2011 07:09:35 -0400 https://speakerdeck.com/doughellmann/an-introduction-to-the-zen-of-python https://speakerdeck.com/doughellmann/an-introduction-to-the-zen-of-python