#83 from __future__ import braces
Python Bytes - Podcast tekijän mukaan Michael Kennedy and Brian Okken - Maanantaisin
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Sponsored by DigitalOcean: pythonbytes.fm/digitalocean
Special guest: Cristian Medina, @tryexceptpass
Brian #1: Code with Mu: a simple Python editor for beginner programmers.
- Found out about this from Nicholas Tollervey (@ntoll)
- Built by an impressive list of people: https://codewith.mu/en/ thanks
- Beginning code editor that also works with Adafruit and micro:bit boards.
- From about:
- Less is More.
- Mu has only the most essential features, so users are not intimidated by a baffling interface.
- Tread the Path of Least Resistance.
- Whatever the task, there is always only one obvious way to do it with Mu.
- Keep it Simple.
- It's quick and easy to learn Mu ~ complexity impedes a novice programmer's first steps.
- Have fun!
- Learning should inspire fun ~ Mu helps learners quickly create and test working code.
- Less is More.
Cris #2: Python parenthesis primer
- Good for beginners. Covers the main uses of parenthesis, curly brackets and square brackets. Including code examples.
- Parenthesis
- Callables.
- Operation prioritization.
- Tuples.
- Generator expressions.
- Skirting the indentation rules.
- Square brackets
- Lists and their comprehensions.
- Indexing.
- Slices.
- Comments also mention type hints.
- Curly braces
- Dictionaries and comprehensions.
- Sets and comprehensions.
- F-strings.
- str.format.
- Try to import braces from
__future__
:
>>> from __future__ import braces
File "[HTML_REMOVED]", line 1
SyntaxError: not a chance
Michael #3: Python for Qt Released
- The Qt Company happy to announce the first official release of Qt for Python (Pyside2).
- v5.11
- We hope we can receive plenty of feedback on what works and what does not. We want to patch early and often.
- Eventually the aim is to release Qt for Python 5.12 without the Tech Preview flag.
- Started two years ago with this announcement from Lars.
- Get Qt for Python: The release supports Python 2.7, 3.5 & 3.6 on the three main desktop platforms. The packages can be obtained from download.qt.io or using pip with
pip install --index-url=https://download.qt.io/official_releases/QtForPython/ pyside2
Brian #4: Itertools in Python 3, By Example
- by David Amos (@somacdivad)
- Iterators and generators are awesome.
- Nice discussion of lazy evaluation and iterator algebra.
- Naive approach using list can blow up in memory and time if you use huge datasets.
- Examples:
- combinations, combinations_with_replacement, permutations
- count, repeat, cycle, accumulate
- product, tee, islice, chain
- filterfalse, takewhile, dropwhile
Cris #5: Python Sets and Set Theory
- Nice primer on sets in python and a little set theory.
- How to build them:
set()
vs{``'``value1``'``,
'``value2``'``}
vs{name for name in name_list}
- Membership tests (which are O(1))
- Set operations
- Union
- Intersection
- Difference
- Symmetric Difference
- Frozen sets
Michael #6: Python 3.7 is coming soon!
- Schedule
- 3.7.0 candidate 1: 2018-06-12
- 3.7.0 final: 2018-06-27
- What’s new / changed?
- New syntax features: PEP 563, postponed evaluation of type annotations.
- New modules: dataclasses: PEP 557 – Data Classes
- New built-in features: PEP 553, the new breakpoint() function.
- Standard lib changes:
- The asyncio module has received new features, significant usability and performance improvements.
- The time module gained support for functions with nanosecond resolution.
- Speed:
- Method calls are 20% faster
- 3.7 is THE fastest Python available, period.
- What’s new in Python 3.7 course by Anthony Shaw
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