Materials for PyCon2015 Tutorial "Modules and Packages : Live and Let Die"
Latest commit c77cb1e Apr 7, 2015 @dabeaz Minor edit

Modules and Packages : Live and Let Die

Tutorial Presentation at PyCon'2015. April 9, 2015. Montreal.

David Beazley (@dabeaz),

This tutorial assumes the use of Python 3.4 or newer. Certain examples in sections 8 and 9 require the use of Python 3.5.

The official website for this tutorial is

Part 1 - Basic Knowledge

basic_package/ : A very simple package consisting of multiple files.

Part 2 - Packages

package_assembly/ : An example of assembling a package from submodules by exporting symbols in files.

decorator_assembly/: Assemble a package from submodules using a special @export decortor.

Part 3 - main

main_wrapper : An example of writing a module that wraps around a script using the -m option.

Part 4 - sys.path

No code samples for this part.

Part 5 - Namespace Packages

namespace_package : A simple namespace package example.

telly : A package that uses namespace packages to allow for user-extensible submodules.

Part 6 - The Module

mini_import : A minimalistic implementation of the import statement.

subpackage_cycle : A package where submodules import each other in a cycle.

import_patch : An example of patching the builtin __import__() function.

Part 7 - The Module Reloaded

reload_instances : A class that detects reloading and updates instances.

reload_func : A context manager that allows reloadable functions to be declared.

Part 8 - Import Hooks

trial_import : A module that tests for another module with import

check_import : A module that tests for another module using module specs.

lazy_import : A module that only executes when accessed for the first time.

watcher : A simple import hook.

autoinstall : An import hook that automatically installs missing modules.

redisimport : An import hook that loads modules from Redis.

Part 9 - Path Hooks

webhook : An import hook that allows URLs to be placed on sys.path.