PyCon Pune 2017

It just so happens python abstracts away the inner workings of import statement beautifully. But are we aware of how python behaves when it encounters an import statement for a module?

• Better yet what is a module actually?
• Packages anybody?
• More than one import style? How to choose between them.
• How would different import styles compare with each other.
• Any Best practices when importing modules. What about that __init.py__ you saw the last time you read someone else’s code.

This talk will walk you through the above and more.

Outline

Materials @ github

• Modules
• What happens when you import a module?
• Packages
• Why packages
• Different styles for importing modules
• python 2 pitfalls
• Module names best practices
• Module lookup
• Modules get imported Only once!
• What really happens when you reload a module?
• Implicit Relative imports
• Absolute relative imports
• Explicit relative imports
• What should you put into __init__.py? Advantages in doing so?
• Questions?

A rough slide presentation has been created uploaded on speakerdeck.

Requirements

python3
material present at: https://github.com/prodicus/talks/tree/master/pyconpune2017

Speaker bio

• Engineering Intern('17) with the Cloud and Security Group @ Cisco, Bangalore.
• Former Software Engineering Intern(‘16) with the backend and infrastructure team @ Wingify, New Delhi, working towards building visual website optimizer, the world’s easiest A/B testing tool.
• Open source enthusiast and contributer to several organizations. Community member @ Coala-Analyzer.
• I do a bunch of side projects in my spare time that which sometimes get humble up votes on Product Hunt (the latest being Plino - An intelligent spam filtering system built as a service) (or) get featured by magazines like importpython, pythondigest and the like.
• I have significant programming experience in Python. In my past projects and gigs, I have built RESTful API’s, automation tools, chat bots, Machine learning tools, command line applications, cross platform desktop games and more.
• Most of my work can be found at my github repo(@prodicus). Some of my notable work @ tasdikrahman.me/projects
• I have previously spoken @ ChennaiPy, October '16 meetup. Slides can be found @ tasdikrahman.me/talks

Links

• http://tasdikrahman.me/
• https://github.com/prodicus/talks/tree/master/pyconpune2017

Slides

https://speakerdeck.com/tasdikrahman/diving-deep-on-how-imports-work-in-python-pycon-pune-2017-proposed-talk