蟒週刊-391-最後一個官方 Py2 版本 2.7.17 發佈

最後一個官方 Py2 版本 2.7.17 發佈

原文: PyCoder's Weekly - Issue #391

• 191006 Zoom.Quiet(大媽) 用時 42 分鐘 完成快譯
• 191006 Zoom.Quiet(大媽) 用時 17 分鐘 完成格式轉抄.

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• Arduino 微控制嘼 + Python: 入門

  • REAL PYTHON

Discover how to use Arduino microcontrollers with Python to develop your own electronic projects. You’ll learn how to set up circuits and write applications with the Firmata protocol. You’ll control Arduino inputs and outputs and integrate the board with higher-level apps.

(是也乎:

Arduino 比 樹莓派 其實不差...

只是, 上手嵌入系統, 電工一系列工具就得先準備並熟練了..

)

• 爲 Python 編寫個 LLVM 專業工具

  • STEPHEN DIEHL

「We’re going to build a single module Numba-like compiler for Python. It won’t be nearly as featureful or complete, but should demonstrate how you can go about building your own little LLVM specializer for a subset of Python or your own custom DSL expression compiler; and integrating it with the standard NumPy/SciPy stack for whatever scientific computing domain you work.」

• Python 2.7.17 發佈

  • PYTHON.ORG

Python 2.7.17 is a bug fix release in the Python 2.7.x series. It is expected to be the penultimate release for Python 2.7. 詳細變動說明....

• Python 代碼複雜性瀑布

  • NIKITA SOBOLEV

What can be done to prevent your Python code from getting too complex? A good linter setup does much more than finding missing commas and bad quotes. A good linter allows you to rely on it with architecture decisions and help you with the refactoring process.

(是也乎:

仍是得靠 linter 工具,
由於工程師老是不自主的在工程中將代碼越寫越複雜...

)

• 在 Python 中從新實現 Solaris 命令使 C 語言的性能提升了17倍

  • DARREN MOFFAT

「As a result of fixing a memory allocation issue in the /usr/bin/listusers command, that had caused issues when it was converted to 64 bit, I decided to investigate if this ancient C code could be improved by conversion to Python.」

(是也乎:

涉及性能, 古老的鍋/坑老是 C 挖的...
如今, Python 也有機會來填/挖了...

)

• Y組合器的簡單本質（用Python解釋）

  • LIONEL PARREAUX

「The Y combinator is a central concept in lambda calculus, which is the formal foundation of functional languages. Y allows one to define recursive functions without using self-referential definitions.」

(是也乎:

經典思想老是值得反覆嗯哼的...
反正不管怎麼推導,雖然老是能成功, 可是, 就是沒法相信本身的眼睛...
直覺上中間必定有誰偷走了什麼...

)

• 大規模 Python: 嚴格的模塊

  • CARL MEYER

The Instagram engineering team is experimenting with a technique for writing Python modules that are side-effect-free on import to reduce server startup time and unexpected global state changes.

(是也乎:

好吧, 什麼事兒數量一多都不容易....

)

• Python 屬性訪問和描述符協議

  • AMIR RACHUM

A deep dive into Python attribute access and the descriptor protocol. What exactly happens when we say foo.bar?

討論

Discussions

• Matplotlib 能以 xkcd 漫畫風格建立圖

  • REDDIT

(是也乎:

早就支持了,仍是官方文檔中的...

)

• 最喜歡的 Python 3.8 特性是什麼?

  • TWITTER.COM/DBADER_ORG

(是也乎:

應該是不變的 import this

)

文章,教程和嗯哼

Articles, Tutorials and Talks

• time.sleep() : 如何在代碼中添加時間延遲

  • REAL PYTHON

Learn how to add time delays to your Python programs. You’ll use decorators and the built-in time module to add Python sleep() calls to your code. Then, you’ll discover how time delays work with threads, asynchronous functions, and graphical user interfaces.

(是也乎:

延遲製造...

)

• Django 開發常犯的 7個錯誤

  • TOMASZ BĄK
  • • Shared by Tomasz Bąk

「Django is powerful web framework, but with power comes responsibility. In this article, we will cover common mistakes that are even seasoned Django developers make, yet most successful Django projects need to deal with these sooner or later.」

(是也乎:

一切常見錯誤, 都是對 Django 設計思想誤解形成的...

... with power comes responsibility

能力帶來責任

)

• 超越cProfile: 採樣分析器和日誌記錄以優化性能

  • ITAMAR TURNER-TRAURING

「Your Python program is too slow. Maybe your web application can’t keep up, or certain queries are taking a long time. Maybe you have a batch program that takes hours or even days to run. How do you speed it up?」

(是也乎:

叕一個嘗試輔助分析代碼來提升速度的工具,
其實, 最根本的, 仍是改進編譯工具,
自動完成優化吧...

)

• Vaex 助您一臂之力: 用Python分析30多年的飛行數據

  • JOVAN VELJANOSKI

「Using the Python DataFrame library Vaex, I present the analysis of nearly 200 million flights made by U.S. carriers. Vaex uses fast out-of-core algorithms, making memory issues a thing of the past.」

(是也乎:

)

• 將HTML轉換爲 Jupyter Notebook

  • ERIK MARSJA

「Learn how to scrape code from a webpage and save it as a Jupyter notebook. In this post, we’ll use Beautifulsoup4, urllib, and json, to save HTML to .ipynb.」

(是也乎:

嗯哼?這個反操做思路很清奇了...
只是 -> Beautifulsoup4 ?
那可累...

)

• Python 用 Matplotlib 進行繪圖

  • REAL PYTHON
  • video

Want to make beautiful plots? Learn about plotting in Python with matplotlib by looking at the theory and following along with practical examples.

(是也乎:

其實吧...其它圖表庫比 Matplotlib 輕便多了...

)

• Keras vs tf.keras : TensorFlow 2.0有什麼區別?

  • ADRIAN ROSEBROCK

In this tutorial you’ll discover the difference between Keras and tf.keras. You’ll also learn what’s new in TensorFlow 2.0.

(是也乎:

能夠說, tf 在拼命將 Keras 吸取, 而後,不兼容 PyTorch 們...

)

• 設計 CI/CD 系統: GitHub拉取請求中的無痛狀態報告

  • CRISTIAN MEDINA
  • • Shared by Cristian Medina

How to report status from Docker containers in an automated CI/CD system into GitHub pull requests using Python.

• Pylint: 使您 Python 代碼風格一致

  • MOSHE ZADKA

How to configure the Pylint code linter to avoid arguing about code complexity.

(是也乎:

老牌工具, 老是要反覆說怎麼用的...

)

• 分治算法 的 Python 示例

  • BRANDON SKERRITT

• 簡易併發在 Python

  • PHILIPP JUNG

• Roll Your Own GUI Automation Library With Python

  • ASRPO.COM

• PyCon 2019: PyCon 上的人民羣衆

  • CHRIS MAY

(是也乎:

國外 PyCon 每件都產生海量的參會筆記...
中國的, 基本都是吐糟...少有筆記,

到如今就收集到一篇今年的:
PyCon China 2019 深圳站，看起來很水但實際並不水！

)

好物

Interesting Projects, Tools and Libraries, Projects & Code

• ancient-text-restoration: 用深度學習還原古文字

  • GITHUB.COM/SOMMERSCHIELD

(是也乎:

)

• diff-match-patch: 高性能庫，用於同步純文本

  • GITHUB.COM/GOOGLE

(是也乎:

google 出品,果斷大氣,
一上來就支持一堆語言:

C++
C#
Dart
Java
JavaScript
Lua
Objective-C
Python

06年就在內部使用了, 今天才開源
)

• reloading: 用從新加載循環在運行時更改Python代碼

  • GITHUB.COM/JULVO

• ssis_validator: 驗證SQL Server集成服務（SSIS）程序包

  • GITHUB.COM/MAHDI-HOSSEINI
  • • Shared by Mike

• BrachioGraph: 易於構建的筆式繪圖儀，由Python提供支持

  • GITHUB.COM/EVILDMP

(是也乎:

低成本模擬簽名...

)

📆🐍 活動/大會

Events, MeetUp 真的是全球線下活動組織中心

• ⋅ Python Brasil 2019

  • October 23 to October 29, 2019

• ⋅ PythOnRio Meetup

  • October 26, 2019
  • 巴西

• ⋅ PyCon Sweden 2019

  • October 31 to November 2, 2019
  • 瑞典

• ⋅ PyCon Fr

  • October 31 to November 4, 2019
  • 法國

DAMA

❤️ Happy Pythonic ;-( 大媽私人無責任播報)

• 蟒營 Python 入門班

  • 第3期
  • 101camp3py

第3期已開課, 爲期6周;
191103 按時結束,
到時再約 4py ;-)

是也乎

NN 3809

• 首發: Issue 391 ~蠎週刊 ~聚集全球蠎事兒 ;-)
• 改進: issue-391.md

蟒營™:Python 入門班||圖譜||幻燈||維基

• 自懟圈
• 蟒週刊

101camp3py 進行中

• 190922 已開課
• 191003 將結束

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