https://www.meetup.com/Taipei-py/events/229246749

• Topic 1: Skyfield
• Topic 2: Uncomplicated Concurrency in Python

Tutorial about skyfield

David Mikolas ([email protected])

https://tw.pycon.org/2015apac/en/program/72
http://davidmikolas.blogspot.tw/

• astropy - clothes
• AstroPython
• AstroBetter
  • Blender
• https://www.youtube.com/watch?v=vW93wkDqz54
• Alfonsine tables
• 星歷表
  • http://ssd.jpl.nasa.gov/?ephemerides
• Julian Date

Uncomplicated Concurrency in Python

Mosky Liu

It will introduce how to implement the CSP (Communicating Sequential Processes) in Python with common libraries.

CSP（communicating sequential processes）是一個著名的並行系統（concurrent systems）數學理論 [1]，並獲得 Go lang 採用作為其並行設計的基礎 [2]。其優點是相較於傳統的多執行緒設計來說較為簡單 [3]，依此理論可以設計出更好維護的並行程式。

雖然 Python 並沒有特別將 CSP 設計成語言的一部份，但我們仍可以利用常見函數庫內的工具實現 CSP，寫出更好維護的並行程式。講者將介紹各種利用 Python 常見函數庫，包含 event-driven、multithreading、multiprocessing 層級，實現 CSP 的方法。

Ctrl-C => SIGINT
Ctrl-C in Python => KeyboardInterrupt

• Channel-based Multithreading
• With the channel
  • Channel 讓 Multi-Threading in Python 變得比較好寫
    • 讓程式裏面只會有 Queue, 不需要費心去處理 join, lock 的問題，只要小心一下 Ctrl-C
  • Producer-Consumer Pattern
  • SOA (Service-oriented Architecture)
• CSP actually is
  • a formal language
    • describing patterns of interaction in concurrent systems
  • mathematical theories
  • process calculi

Lightning Talk

Vectorizing String Operation

http://www.pha8.com/demo.html