asyncioを軽くさわってみた

第28回Python東海の発表資料

Transcript

1. asyncioΛઙ͘͞Θͬͯ Έͨ 2015.09.12 Python౦ւ 28th
2. ͓લͩΕΑ • Έ͏Β͞ͱ͠(@mursts) • Python౦ւͷ؅ཧਓͷҰਓͰ͢ • ࠷ۙGoΛ৮Γ࢝Ί·ͨ͠ • Tour of Go ͚ͩ
3. ࠷ॳʹͪΐͬͱ͚ͩGoͷ ࿩
4. GoͷΑ͍ͱ͜
5. Gopher͕͔Θ͍͍ ※ݸਓతͳײ૝Ͱ͢
6. The Go gopher was designed by Renee French. The gopher vector data was made by Takuya Ueda. Licensed under the Creative Commons 3.0 Attributions license.
7. Goroutine͕͋Δ ※ݸਓతͳײ૝Ͱ͢
8. Goroutineʁ
9. Goroutine • GoͰฒߦ࣮ߦΛ࣮ݱ͢Δ࢓૊ΈͰɺฏͨ͘ݴ͏ͱεϨουΈ ͍ͨͳײ͡ • Goroutine͕͋Δ͚ͩͰฒྻॲཧ͕ॻ͖΍͍͢
10. Tour of Go #63 package main import ( "fmt" "time" ) func say(s string) { for i := 0; i < 5; i++ { time.Sleep(100 * time.Millisecond) fmt.Println(s) } } func main() { go say("world") say("hello") }
11. ಄ʹgoΛ͚ͭͯݺͿ͚ͩ func main() { go say("world") say("hello") } ͜Ε͚ͩͰผεϨουͰ࣮ߦͰ͖·͢
12. Goͷ࿩͓͠·͍
13. ͡Ό͋Pythonͷฒྻॲ ཧ͸ʁ
14. PythonͰͷฒྻॲཧ • multiprocessing • concurrent.futures • asyncio etc...
15. PythonͰͷฒྻॲཧ • multiprocessing • concurrent.futures • asyncio etc...
16. asyncio asyncio - ඇಉظ I/OɺΠϕϯτϧʔϓɺίϧʔνϯ͓ΑͼλεΫ • Python3.4Ͱ௥Ճ͞ΕͨඇಉظI/Oͳඪ४ϥΠϒϥϦ • Python3.3Ͱ΋࢖༻Մೳ # pip install asyncio • PyConJP 2014Ͱ΋ηογϣϯ͕͋Γ·ͨ͠ɻ • PythonʹΑΔඇಉظϓϩάϥϛϯάೖ໳ (ja)
17. αϯϓϧ
18. import asyncio import random @asyncio.coroutine def wait_for(task_name): wait = random.randint(1, 5) print('taks {} begin. wait {} sec'.format(task_name, wait)) yield from asyncio.sleep(wait) print('taks {} end.'.format(task_name)) def main(): tasks = [wait_for(x) for x in range(3)] loop = asyncio.get_event_loop() loop.run_until_complete(asyncio.wait(tasks)) loop.stop() if __name__ == '__main__': main()
19. Πϕϯτϧʔϓ࡞ͬͯɺίϧʔνϯ࡞ͬͯݺͼग़ͤ͹ฒྻॲཧ͕ Ͱ͖ͦ͏
20. ͜·͚͍͍͐ͨ͊͜ΜͩΑʂʂ (AAུ
21. ࠓճ΍Γ͔ͨͬͨ͜ͱ
22. http://d.hatena.ne.jp/heavenshell/20120304
23. asyncioΛ࢖ͬͨ2015 ೥౓൛Λʂ
24. ΍ͬͯΈͨ
25. σϞ https://gist.github.com/mursts/1709f01572365a98d057
26. ໌೔(2015೥9݄13೔)͸Կͷ೔Ͱ͠ΐ͏͔ʁ
27. Python3.5ϦϦʔε೔(༧ఆ)ʂ
30. import asyncio async def co_func1(): return 'co_func1_ok' async def co_func2(): return await co_func1() + ' co_func2_ok' loop = asyncio.get_event_loop() print(loop.run_until_complete(co_func2())) # co_func1_ok co_func2_ok Python3.5͔Βಋೖ͞ΕΔasyncͱawaitͰίϧʔνϯΛѻ͏ - Qiita
31. 3.5Ͱ͸asyncioͷվྑ΋ೖ͍ͬͯΔΑ͏ͳͷͰɺͥͻ3.5Ͱ࢖ͬ ͯΈ·͠ΐ͏ Python3.4 ͷ৽ػೳ asyncio Λ࢖ͬͯΈΔ
32. 3.5Ͱಋೖ͞ΕΔܕώϯτ΋ָ͠ΈͰ͢
33. ͝੩ௌ͋Γ͕ͱ͏͍͟͝ ·ͨ͠