Evolution of Modern Python
Keynote, 2020-11-13, 09:30
Alexander Hultnér, PyCon Sweden 2020
@ahultner
Alexander Hultnér
Founder of Hultnér Technologies
@ahultner
Introduction
Focus forward on Modern Python's (3) evolution, not the transition from Python 2
Timeline
-
Python 3 release, December 3, 2008
-
Python 2.7 release, June 2009
-
Python 2 EoL, January 1, 2020
@ahultner
Where it all started
2015-2016
Heliospectra
- LED Grow Lights
- Smart control systems for commercial greenhouses
- Even worked with ESA (European Space Agency) in the Eden-ISS project
Anyone seen "The Martian"?
@ahultner
@ahultner
Where it all started
Next generation control systems
Old software
- Desktop app in Python 2 aimed towards researchers.
New system
- Adapted for commercial greenhouses.
- Requires industrial scale, in-facility hardware, remote control, third party integration.
So can we use Modern Python, i.e. Python 3?
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Where it all started
Next generation control systems
New system
- Modular architecture
- Inter-process communication
enables multiple versions, and languages - Python 3.4, and then 3.5
- Python 2 was never needed
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I'm fully convinced, Python 3 is great!
Python 3.4
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And many more in the release notes
Python 3.5
@ahultner
And many more in the release notes
Time to level up!
2017–2018
-
Prototyping new application
Great opportunity to utilise new features- f-strings
- type-annotations
- dataclasses
- Weekend project
- dataclasses with run-time type-checker and JSON parsing/formatting
- GothPy
- PyCon SE
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Python 3.6
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And many more in the release notes
Python 3.7
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Release Date: June 27, 2018
Significant features
- Ordered dicts (official standard)
- PEP 557, Data Classes (built-in)
- Two-way iso format for date-times
- Significant speedups
And many more in the release notes
A new dawn
@ahultner
2019-present
Reincorporated my business
Hultnér Technologies AB
- Python 3.8 Walrus Operator ":=" article
- More popular than I'd ever imagined
- Ranks 1-2 on Google for "walrus operator"
- Passed 100 000 views some time back
- Featured by medium curators, newsletters,
Python Bytes Podcast, various news sites, etc.
- Property Based Testing, Foss-North & PyCon SE
A new dawn
@ahultner
2020, covid hits
Some good things
- Python 2 EoL, hence this talk
- Remote conferences increase accessibility, I've been able to talk at conferences every month.
(But I still miss the social aspect) - Python 3.9 is out
- Lots of interesting things in the Python world like Schemathesis and Pyston2
- Less time commuting => more time to experiment
Papero.io
@ahultner
About experimenting more, with Magnus Junghard
- Backend in Python 3.8 & 3.9
- Async I/O, FastAPI Starlette, async task workers
- Type annotations everywhere, mypy
- Automatically generated TypeScript API interfaces based on backend types & schemas
- Pydantic runtime type-checking
- Randomised, property based testing
- Deliver better results faster!
Papero.io
@ahultner
About experimenting more, with Magnus Junghard
Okay, so what is Papero.io?
Create beautiful PDFs using dynamic HTML, CSS and JavaScript, or why not Django, maybe Flask?
Turn-key API as a service, or on premise.
Closed beta list opens today
Papero.io/beta for waitlist
Python 3.8
@ahultner
More in the release notes
Python 3.9
@ahultner
More in the release notes
What does the future hold?
@ahultner
Near Future
- Python 3.10
- PEP 634 - Structural Pattern Matching: Specification
- MyPy constantly evolving
- New type checkers popping up
- Community is growing at an ever increasing pace!
Further ahead
- Python 4, will it be another 2->3 transition?
- No, everyone's learned since last time
Questions
Contact me if you have any further
questions.
Want to learn more?
Available for training, workshops and freelance consulting.
Previous talks on YouTube
Links
@ahultner