蟒週刊:388

原文: PyCoder's Weekly - Issue #388

• 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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• Python 中如何用 Generators 和 Yield

  • REAL PYTHON

Learn about generators and yielding in Python. You'll create generator functions and generator expressions using multiple Python yield statements. You'll also see how to build data pipelines that take advantage of these Pythonic tools.

(是也乎:

能夠說, 真蟒, 一己之力, 將 Python 領域全部值得嗯哼的事兒, 這幾年所有從新嗯哼了一遍...
這是爲了得到徹底自主產權的教材, 來構築課程池?

)

• 對比 Python, Julia, Matlab, IDL 以及 Java

  • NASA.GOV

"We use simple test cases to compare various high level programming languages. We implement the test cases from an angle of a novice programmer who is not familiar with the optimization techniques available in the languages. The goal is to highlight the strengths and weaknesses of each language but not to claim that one language is better than the others."

(是也乎:

實錘了....

沒有一枝獨秀, 只有相對優點.

若是本身用 Python 沒毛病, 若是公司來, Java 永遠正確.

)

• 正則表達式在 Python 中的性能

  • JUN WU

"Working with regex, you have to understand what you are doing: the regex engine for Python, the type of statement you are writing, and alternative tools that are available for your purposes. Yes, there are instances when the re package may not be the best tool to use."

• PEG 在 Core Developer Sprint

  • GUIDO VAN ROSSUM

"Every year for the past four years a bunch of Python core developers get together for a week-long sprint at an exotic location. These sprints are sponsored by the PSF as well as by the company hosting the sprint."

(是也乎:

老爹真的開始放飛了, 勇於放權給你們玩內核了...

)

• Mypy 0.730 發佈

  • MYPY-LANG.BLOGSPOT.COM

Mypy 0.730 is out, with prettier, colored output and error code support, along with many other fixes and improvements.

(是也乎:

兼容 Py2 的生態圈已經正式起航...再次.

)

• Django Bugfix 發佈: 2.2.6, 2.1.13 and 1.11.25

  • DJANGOPROJECT.COM

討論

Discussions

• Python 3.8.0 候選發行版今天到期

  • ŁUKASZ LANGA

• 若是有人說"知道Python",心裏裏但願他們知道什麼?

  • REDDIT

(是也乎:

縮進/歷史/黑洞/...

)

• 您須要知道數學才能成爲程序員嗎?

  • REDDIT

(是也乎:

Yes and Not,

數學不必定要精通, 可是, 數學依賴的邏輯必定得穩.

)

文章,教程和嗯哼

Articles, Tutorials and Talks

• 用 Python 防止 SQL 注入攻擊

  • REAL PYTHON

SQL injection attacks are one of the most common web application security risks. In this step-by-step tutorial, you'll learn how you can prevent Python SQL injection. You'll learn how to compose SQL queries with parameters, as well as how to safely execute those queries in your database.

(是也乎:

注入攻擊...只是, 也早已有對應模塊能夠自動防止絕大多數了...

)

• 用Keras糾正Adam(RAdam)優化器

  • ADRIAN ROSEBROCK

Learn how to use Keras and the Rectified Adam optimizer as a drop-in replacement for the standard Adam optimizer, potentially leading to a higher accuracy model (and in fewer epochs).

(是也乎:

Keras 可能又是一個 Panda 級別的做品.

)

• 簡單介紹 Python 中的 StringIO 和 BytesIO

  • DANIEL BEACH
  • • Shared by Daniel Beach

"For some reason IO streams are a totally underused feature that rarely comes up in most code. We all know that memory if faster than disk IO, this is what I use IO streams for."

• 與PostgreSQL相比,Redis在存儲JSON Blob方面要快多少?

  • PETER BENGTSSON

Also read the followup here..

(是也乎:

快也沒法替換.
)

• Python 中的字符串和字符數據

  • REAL PYTHON
  • video

Learn how to use Python's rich set of operators, functions, and methods for working with strings. You'll learn how to access and extract portions of strings, and also become familiar with the methods that are available to manipulate and modify string data in Python 3.

(是也乎:

這絕對是基礎又重要的嗯哼...只是, 涉及中文, 又得複雜一倍.

)

• 使用iloc 和 loc爲 Pandas Dataframes 創建索引和切片

  • ERIK MARSJA

Learn how to work with Pandas iloc and loc to slice, index, and subset your dataframes, for example by row and columns.

(是也乎:

要不是 : 操做符已佔用, 不然, 更加直覺

)

• 自定義您的 Pytest 測試套件(第2部分)

  • RAPHAEL PIERZINA

• Python 中的 Multiprocessing vs Threading : 每位數據科學家都須要知道的

  • SUMIT GHOSH

(是也乎:

數據科學家應知應會的東西, 太多了...

)

• 在Visual Studio Code中設置Flask應用程序

  • MIGUEL GRINBERG

(是也乎:

得益於 VSCode 設計合理的插件體系, 各大框架均可以快速包裝本身專用的插件來.
只是....

)

• Python Negatypes: ABCs 和 subclasshook

  • HILLEL WAYNE

好物

Interesting Projects, Tools and Libraries, Projects & Code

• pire: Python 交互式正則表達式

  • GITHUB.COM/JOHANNESTAAS

PIRE is an interactive command-line interface allowing you to edit regexes live and see how your changes match against the input you specify.

(是也乎:

這麼多年了, 正則表達式 依然沒找到合適的輔助表述工具/協議/DSL/...

)

• pyrrhic: 可編程 Python 構建系統

  • GITHUB.COM/TAWESOFT • Shared by Ben Golightly

• pandas-profiling: 從Pandas DataFrame 對象建立 HTML 分析報告

  • GITHUB.COM/PANDAS-PROFILING

• limeade: 適用 Python 3.4+ 的熱重裝

  • GITHUB.COM/CFSWORKS

(是也乎:

動態加載,也就是熱升級前夜技巧?

)

📆🐍 活動/大會

Events, MeetUp 真的是全球線下活動組織中心

• ⋅ PyCon Estonia

  • October 3 to October 4, 2019
  • 愛沙尼亞

• ⋅ PyCon Balkan 2019

  • October 3 to October 6, 2019
  • 巴爾幹半

• ⋅ SciPy Latam

  • October 8 to October 11, 2019
  • 哥倫比亞

(是也乎:

logo 設計很不錯, .svg 的

<img src="https://conf.scipyla.org/static/images/logo-menu.svg?h=8aaed2a3"

width="142"/>

)

• ⋅ PyCon ZA 2019

  • October 9 to October 14, 2019
  • 南非

• ⋅ PyConDE & PyData Berlin 2019

  • October 9 to October 12, 2019
  • 德國

• ⋅ PyTennessee 2020 CFP

  • March 7 to March 8, 2020
  • in Nashville, TN
  • 田納西州

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 3793

• 首發: Issue 388 ~蠎週刊 ~聚集全球蠎事兒 ;-)
• 改進: issue-388.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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