• 原文: Import Python Weekly Newsletter - Issue No 121
• 欢迎, 来 PyChina/weekly 共同翻译/增订/推荐 周刊 蠎消息 ;-)

该读

~ 文章, Blog, 教程...

• Django ORM vs SQLAlchemy – Vizbi
  • django, SQLAlchemy, ORM

Recently I started using SQLAlchemy and am very impressed with it. I have used Django ORM a lot in the past. This post compares achieving same result using Django and with SQLAlchemy. Let’s see which looks more intuitive.

(是也乎:

港真, 别在 Django 之外用 Django ORM )

• Python类型注释与图形算法 - 课程 第二部分
  • type annotation, graph

In this part, we will implement graph data structure using classes and interfaces, and discuss when it’s worth overruling type hints.

• 加速 Websockets 60X
  • websockets

I recently I had the opportunity to speed up some Websocket code that was a major bottleneck. The final solution was 60X (!) faster than the first pass, and an interesting exercise in optimizing inner loops.

• 图形数据库: 探讨你和 Python 的关系
  • graph databases

This trouble to visualise the relationship between entities in a Relational Database is a great reason to introduce the concept of graph. Graph is a data structure formed by a set of vertices V and a set of edges E. It can be represented graphically (where the vertices are shown as circles and edges are shown as lines) or mathematically in the form G = (V, E).

• 6 分钟魔改 Python 语言
  • core-python, cpython

This week I raised my first pull-request to the CPython core project, which was declined :-( but as to not completely waste my time I’m writing my findings on how CPython works and show you how easy it is to modify the Python syntax.

• 使用 Nginx Nchan 和 Python 实现网络应用程序
  • nginx, nchan

Nchan makes writing realtime web based pub/sub applications a breeze. In this article, we will build a simple systems monitoring dashboard which displays process information in realtime similar to what you would see when you run the unix top or htop commands.

(是也乎:

港真, OpenResty 可以尝试

)

• Python 中"非空集合"的交集
  • list, set, code_snippets

Suppose you generate several sets on the fly, and you want to find the elements that are in all the sets. That's easy, it's the intersection of sets.

• 用 Watchdog 监控文件目录变更
  • python, watchdog

I was working recently on writing Python code using TDD. So every time I change code I wanted to run command that will test my code if it pass unit tests. In order to do that I needed some service/app that will monitor for file changes, and if it changes execute my batch file that runs unit tests.

• Jupyter Notebook 在项目的 virtual env

  • jupyter

• AWS Lambda 刚刚支持 3.6

  • aws, lamda

• SQL Server 2017: 用 Python 进行高级分析

  • sqlserver

In this session you will learn how SQL Server 2017 takes in-database analytics to the next level with support for both Python and R; delivering unparalleled scalability and speed with new deep learning algorithms built in.

(是也乎:

M$ 将 Linux 虚拟层追加到自己OS 中了,然后呢?

)

• Control-C handling in Python and Trio

  • core-python

• Kubernetes 调度在 Python

  • kubernetes

• 学习 Python 脚本来自动发布播客

  • podcast

(是也乎:

解决真实问题,永远是学习的正义动力... )

好物

~ 包/模块/库/片段...

• algorithms:
  • 2112 Stars, 174 Fork

Minimal examples of data structures and algorithms in Python

(是也乎:

数据结构和算法的最小例子 )

• jokekappa
  • 74 Stars, 7 Fork

A library for delivering one-line programming jokes

(是也乎:

国人作品... )

• cashier
  • 53 Stars, 2 Fork

Persistent caching for python functions

(是也乎:

收银员? 这个项目名字起的好.

后端可以是 SQLite 的函式缓存模块, 可以对反复使用的函式进行 16倍速的加载加速... 是的,也支持了 Py3 )

• crickbuzz_cricket_score
  • 13 Stars, 2 Fork

A Terminal based program to follow live cricket score by scraping crickbuzz.com

• MigrateGitlabToGogs
  • 3 Stars, 0 Fork

Migrate repositories from Gitlab to Gogs or Gitea

(是也乎:

将仓库迁出 Gitlab 的工具...这是预兆哪, 俺也得迁移了...

以及 Gogs->Gitea 都是国人作品... )

• venvdetect
  • 3 Stars, 1 Fork

Detect available Python virtual environments in your current directory

(是也乎:

py3 又得将 pyenv 解决过的问题,重新再嗯哼一下... )

(￣▽￣)

• tankywoo/simiki
  • 657 Stars, 95 Fork

Simiki is a simple wiki framework, written in Python.

(是也乎:

知道创宇 成员私人作品 md 的静态维基 )

是也乎

• 170421 Zoom.Quiet 42 分钟完成快译
• 170421 Zoom.Quiet 用时 7 分钟完成格式化.