蟒週刊-401-Python 2.7 今天正式退休

原文: PyCoder's Weekly - Issue #401

• 200101 Zoom.Quiet(大媽) 用時 42 分鐘 完成快譯
• 200101 Zoom.Quiet(大媽) 用時 17 分鐘 完成格式轉抄.

---

• Python 2.7 Retires Today

  • PYTHONCLOCK.ORG

Python 2.7 will not be maintained past Jan 1st, 2020. So long Python 2, and thank you for your years of faithful service. Python 3, your time is now!

(是也乎:

固然, 海量 Py2.7 兼容代碼, 將繼續在非官方支持下良好運行到永遠...

)

• 對 Python之禪 的冥想

  • MOSHE ZADKA

「The Zen of Python is not ‘the rules of Python’ or ‘guidelines of Python’. It is full of contradiction and allusion. It is not intended to be followed: it is intended to be meditated upon. In this spirit, I offer this series of meditations on the Zen of Python.」

(是也乎:

蟒之禪 的原義就是引起沉思,而不是終止之...

)

• Python 計時器功能: 監視代碼的三種方法

  • REAL PYTHON

Learn how to use Python timer functions to monitor how fast your programs are running. You’ll use classes, context managers, and decorators to measure your program’s running time. You’ll learn the benefits of each method and which to use given the situation.

(是也乎:

總之: codetiming 內置計時器;

time.perf_counter() 提供精確計時;

timeit 專用運行時計時;

cProfile 專用性能分析器;

pstats CLI 性能分析工具;

KCachegrind GUI 工具來觀察性能分析數據;

line_profiler 單行代碼性能監察;

memory-profiler 內存監察工具.

)

• 開源移民情緒困擾

  • ARMIN RONACHER

The creator of Flask reflects on the Python 2 to 3 migration and how the Python community handled the transition. Interesting read!

(是也乎:

和 數字遊民 不一樣, 移民指就基礎運行平臺的遷移,
不象 Python 1.x -> 2.x 的遷移, 亳無壓力,
由於, 當年根本就沒什麼成規模的 1.x 工程.

因此, 技術工程遷移, 多數阻力不在技術, 而在情緒, 就象人月神話,以及其它真實軟件工程心理學著做中論及的...

代碼相處時間久了, 同樣有感情的, 被迫遷移到徹底無感受的新平臺中, 就象改嫁...

)

• Python REPL和Shell集成技巧

  • JOHN D. COOK

Some good tips and ways to minimize the context interruption when moving between the shell and a Python session.

(是也乎:

廚子說的老是有用的....
)

• 俺名片能運行 Linux+MicroPython

  • GEORGE HILLIARD

Embedded systems engineer builds a card-sized computer that boots Linux and runs MicroPython. Cool!

(是也乎:

網紅事件了...

已經有人準備將之複製並配置爲實體 BTC 銭包了...

)

• PyPy 7.3.0 發佈

  • PYPY BLOG

討論

Discussions

NIL

文章,教程和嗯哼

Articles, Tutorials and Talks

• Python Packaging 生態

  • NICK COGHLAN

「[It] seems worthwhile for me to write-up my perspective as one of the lead architects for that ecosystem on how I characterize the overall problem space of software publication and distribution, where I think we are at the moment, and where I’d like to see us go in the future.」

(是也乎:

簡單的說, 還在春秋戰國時代, 遠沒有穩定下來

)

• 2019十大真蟒文章

  • TALK PYTHON
  • podcast

I was a guest on Mike Kennedy’s Talk Python podcast and we discussed a shortlist of 10 interesting tutorials published on Real Python in 2019. So if you’re looking to expand your year-end reading list you’ll find some inspiration there. It’s always a treat to be on Mike’s show—definitely check out his podcast!

(是也乎:

果真, 每一年必須的 top1 文章/問題/討論都是相同的:

如何運行你的 Python 腳本?

這其實, 也展現出了編程和非編程世界的根本差別.

)

• 用 Python 對數據排序

  • REAL PYTHON
  • video

In this step-by-step course, you’ll learn how to sort in Python. You’ll know how to sort various types of data in different data structures, customize the order, and work with two different ways of sorting in Python.

(是也乎:

Python 豐富的數據類型, 也就意味着有豐富的排序技巧...

)

• 批量訓練: 如何拆分數據?

  • OLEG ŻERO

Creating data batches for model training evaluated in context of loading data using Python generators, HDF5 files and NumPy using a sound processing machine-learning model as an example.

• 如何使用 Pandas get_dummies 在 Python 中建立虛擬變量

  • ERIK MARSJA

Dummy variables (or binary/indicator variables) are often used in statistical analyses as well as in more simple descriptive statistics.

• Python 類型提示和 MyPy 教程

  • GUILHERME KUNIGAMI

This post covers mypy in general terms as well many examples demonstrating the syntax and capabilities of this type checker.

• Pipx: 在虛擬環境中安裝/卸載和升級 Python 軟件包

  • ERIK MARSJA

Here you will learn how to install, uninstall, & upgrade Python packages using the pipx tool.

(是也乎:

---w

)

• 魔法-蟲洞: 將嗯哼從一臺計算機安全地轉移到另外一臺計算機

  • MAGIC-WORMHOLE.READTHEDOCS.IO

(是也乎:

一本免費魔法書...

)

• Python 進行堆排序

  • OLIVERA POPOVIĆ

好物

Interesting Projects, Tools and Libraries, Projects & Code

• drf_dynamics: 用於 Django REST 框架的動態查詢集和序列化程序設置

  • GITHUB.COM/IMBOKOV
  • • Shared by Ilya Bokov

Handles the hassle of handling the amount of fields to be serialized and queryset changes for each request for you.

• Astropy: Python 天文學

  • ASTROPY.ORG

(是也乎:

Astropy -> 熵, 好詞兒
)

• AI_Sudoku: 從照片中提取數獨謎題並解決

  • GITHUB.COM/NEERU1207

• ffmpeg-python: FFmpeg的Python綁定

  • GITHUB.COM/KKROENING

(是也乎:

其實, FFmpeg 自己的控制界面足夠穩了...

只是能將:

ffmpeg -i input.mp4 -i overlay.png -filter_complex "[0]trim=start_frame=10:end_frame=20[v0];\
[0]trim=start_frame=30:end_frame=40[v1];\
[v0][v1]concat=n=2[v2];[1]hflip[v3];\
[v2][v3]overlay=eof_action=repeat[v4];\
[v4]drawbox=50:50:120:120:red:t=5[v5]"\
-map [v5] output.mp4

變成:

import ffmpeg

in_file = ffmpeg.input('input.mp4')
overlay_file = ffmpeg.input('overlay.png')
(
    ffmpeg
    .concat(
        in_file.trim(start_frame=10, end_frame=20),
        in_file.trim(start_frame=30, end_frame=40),
    )
    .overlay(overlay_file.hflip())
    .drawbox(50, 50, 120, 120, color='red', thickness=5)
    .output('out.mp4')
    .run()
)

仍是值得的...

)

• Magic-Wormhole: 將嗯哼從一臺計算機安全地轉移到另外一臺計算機

  • MAGIC-WORMHOLE.READTHEDOCS.IO

• pyopengl: 適用於 Python 的 OpenGL 綁定

  • GITHUB.COM/MCFLETCH

(是也乎:

C++ 專屬領域終於也被入侵了...
)

📆🐍 活動/大會

Events, MeetUp 真的是全球線下活動組織中心

• ⋅ PyDelhi User Group Meetup

  • January 4, 2020
  • 印度

• ⋅ Melbourne Python Users Group, 澳洲

  • January 6, 2020

• ⋅ Dominican Republic Python User Group

  • January 7, 2020
  • 中美洲

• ⋅ Heidelberg Python Meetup

  • January 8, 2020
  • 德國

• ⋅ Python North East

  • January 8, 2020
  • 英國

• ⋅ PyStaDa

  • January 8, 2020
  • ??

• ⋅ pyCologne User Group Treffen

  • January 8, 2020
  • 404

• ⋅ Santa Cruz Python Meetup

  • January 8, 2020
  • USA

• ⋅ PyMNTos

  • January 9, 2020
  • USA

• ⋅ Python Atlanta

  • January 9, 2020
  • USA

DAMA

❤️ Happy Pythonic ;-( 大媽私人無責任播報)

• 蟒營 Python 入門班

  • 4py :-}
  • 5py ;-)

((￣▽￣):

第4期已開始, 爲期6周;

當前 ch2
200112 按時結束

年後第5期就來:

200203 值得上線

)

• 從1965年到2019年，最受歡迎的編程語言 (動畫)

  • TWITTER.COM/MARCUSBORBA

(是也乎:

網紅小視頻也出現了...

最後3秒, Python 瘋狂反轉一切.

)

是也乎

NN 3879

• 首發: Issue 401 ~蠎週刊 ~聚集全球蠎事兒 ;-)
• 修訂: issue-401.md

101camp4py 進行中

官網 https://py.101.camp/

• 191201 正式開課
• 200112 按時結束
• 5py 大年初十開始報名

蟒營™:Py入門班||圖譜||幻燈||維基

• 自懟圈
• 蟒週刊

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