Python3.11新機能asyncio.TaskGroup()と2022年asyncioの"Hello-ish world"

Python 3.11 new feature asyncio.TaskGroup. "Hello-ish world" in asyncio 2022.
[PyCon JP 2022](https://2022.pycon.jp/timetable/?id=J7S98E)

Transcript

1. Python 3.11新機能 asyncio.TaskGroupと 2022年 asyncioの “Hello-ish world” Junya Fukuda PyCon JP 2022
2. •෱ా ൏໵ʢJunya Fukudaʣʢ@JunyaFffʣ •גࣜձࣾ೔ຊγεςϜٕݚʢJSLʣॴଐ ௕໺ݝͷձࣾ •WebΤϯδχΞ •GEEKLAB.NAGANO - ίϛϡχςΟεϖʔεӡӦ •ʢ͓͠͝ͱͰʣόϦϡʔϒοΫε •ຊ޷͖ʹѪ͞ΕΔαʔϏεΛ໨ࢦͯ͠ʢݹຊങऔɾൢചʣ •GEEKLAB.NAGANO - ίϛϡχςΟεϖʔεӡӦ ຊ೔ͷίʔυ͸ͪ͜Β
3. Python実践 •2022೥1݄ൃച ٕज़ධ࿦ࣾ •Python 3 ΤϯδχΞೝఆ࣮ફࢼݧ ओڭࡐ •2࡭໨ʹ͓͢͢Ίʂࣙॻతʹ࢖͍ͬͯ͋͛ͯͩ͘͞ʂ • ҎԼͷষΛ୲౰͍ͯ͠·͢ • Chapter2 ίʔσΟϯάن໿ • Chapter5 ܕώϯτ • Chapter19 ฒߦॲཧɼฒྻॲཧ
4. きょうはasyncioの新しい機能と 新しい “Hello-ish world”
5. asyncio、使っていますか？✋
6. ありがとうございます。
7. ですよね。 なぜ使わないのでしょうか？
8. - asyncio 基本 •ඇಉظॲཧͷίʔυΛॻͨ͘ΊͷެࣜϥΠϒϥϦ •ෳ਺ͷλεΫΛಉ࣌ʹॲཧ͢Δ •I/Oό΢ϯυͳॲཧʢDBΞΫηε/HTTPϦΫΤετͳͲʣͰޮՌΛൃش •֎෦API-A, ֎෦API-B, ֎෦API-C Λಉ࣌ʹ࣮ߦ͍ͨ͠ •ಉظॲཧͩͱ ॱ൪ʹ࣮ߦ " # $
9. - asyncio 基本 •ඇಉظॲཧͷίʔυΛॻͨ͘ΊͷެࣜϥΠϒϥϦ •ෳ਺ͷλεΫΛಉ࣌ʹॲཧ͢Δ •I/Oό΢ϯυͳॲཧʢDBΞΫηε/HTTPϦΫΤετͳͲʣͰޮՌΛൃش •֎෦API-A, ֎෦API-B, ֎෦API-C Λಉ࣌ʹ࣮ߦ͍ͨ͠ •ඇಉظॲཧͩͱ ·ͱΊͯಉ࣌ʹ࣮ߦ C B A
10. - asyncio 基本 •ඇಉظॲཧͷίʔυΛॻͨ͘ΊͷެࣜϥΠϒϥϦ •ຖόʔδϣϯਐԽ ߴϨϕϧAPI͕ॆ࣮ - ͱͯ΋ॻ͖΍͍͢ •ຊ΍PyCon JP 2021ͰͦΜͳτʔΫΛ͍͖ͤͯͨͩͨ͞·ͨ͠ɻͥͻʂ "4(*ΞϓϦέʔγϣϯೖ໳
    
    ͜Θ͘ͳ͍BTZODJPجૅͱඇಉظ*0
    
    'BTU"1*Λྫʹ
    
    1Z$PO
    +1
     •ෳ਺ͷλεΫΛಉ࣌ʹॲཧ͢Δ •I/Oό΢ϯυͳॲཧʢDBΞΫηε/HTTPϦΫΤετͳͲʣͰޮՌΛൃش
11. 🤔
12. asyncio 使 理由 考 •׳ΕͯΔಉظॲཧͰे෼ •IO͕ͳ͍ʢػցֶश΍σʔλ෼ੳ͕த৺ʣʢCPUʹ͕Μ͹ΒͤΔ͜ͱଟ͍ʣ •ඇಉظॲཧͬͯɺ༧ଌͰ͖ͳ͍ಈ͖Λͦ͠͏ •ଞͷݴޠͰॻ͍ͪΌ͏ʢGo΍JS(nodejs/deno..),Rust,C#,SwiftͳͲʣ
13. asyncio 使 理由 考 •׳ΕͯΔಉظॲཧͰे෼ •IO͕ͳ͍ʢػցֶश΍σʔλ෼ੳ͕த৺ʣʢCPUʹ͕Μ͹ΒͤΔ͜ͱଟ͍ʣ •ඇಉظॲཧͬͯɺ༧ଌͰ͖ͳ͍ಈ͖Λͦ͠͏ •ଞͷݴޠͰॻ͍ͪΌ͏ʢGo΍JS(nodejs/deno..),Rust,C#,SwiftͳͲʣ
14. asyncio 使 理由 考 •׳ΕͯΔಉظॲཧͰे෼ •IO͕ͳ͍ʢػցֶश΍σʔλ෼ੳ͕த৺ʣʢCPUʹ͕Μ͹ΒͤΔ͜ͱଟ͍ʣ •ඇಉظॲཧͬͯɺ༧ଌͰ͖ͳ͍ಈ͖Λͦ͠͏ •ଞͷݴޠͰॻ͍ͪΌ͏ʢGo΍JS(nodejs/deno..),Rust,C#,SwiftͳͲʣ
15. asyncio 使 理由 考 •׳ΕͯΔಉظॲཧͰे෼ •IO͕ͳ͍ʢػցֶश΍σʔλ෼ੳ͕த৺ʣʢCPUʹ͕Μ͹ΒͤΔ͜ͱଟ͍ʣ •ඇಉظॲཧͬͯɺ༧ଌͰ͖ͳ͍ಈ͖Λͦ͠͏ •ଞͷݴޠͰॻ͍ͪΌ͏ʢGo΍JS(nodejs/deno..),Rust,C#,SwiftͳͲʣ ݁ہཁ݅ʹΑΓͦ͏ Ͱ΋WebͰ͋Ε͹I/Oͷմ asyncioͰ࡞ͬͯ΋Α͍͔΋
16. asyncio 使 理由 考 •׳ΕͯΔಉظॲཧͰे෼ •IO͕ͳ͍ʢػցֶश΍σʔλ෼ੳ͕த৺ʣʢCPUʹ͕Μ͹ΒͤΔ͜ͱଟ͍ʣ •ඇಉظॲཧͬͯɺ༧ଌͰ͖ͳ͍ಈ͖Λͦ͠͏ •ଞͷݴޠͰॻ͍ͪΌ͏ʢGo΍JS(nodejs/deno..),Rust,C#,SwiftͳͲʣ
17. asyncio 使 ？ •͔֬ʹͦΕ͸ͦ͏ •JavaScriptͰͷίʔϧόοΫͱ͔ʢ͕ͦͬͪಈ͘Μ͔͍ͬʣ •Έͳ͞Μ΋ܦݧ͋Δ͔΋ʁ •͸ͨ·ͨྫ֎ىͬͨ࣌͜ɺͲ͏ͳΔΜͩΖ͏… •εϨου΍ϚϧνϓϩηεͰͷܦݧ •ඇಉظॲཧͬͯɺ༧ଌͰ͖ͳ͍ಈ͖Λͦ͠͏
18. 「この処理、   例外起こるとどうなります？」
19. 「この処理、   例外起こるとどうなります？」 ϨϏϡʔͰݴ͏͜ͱɾݴΘΕΔ͜ͱ͋Γ·ͤΜ͔ʁ
20. asyncio 使 ？ •ඇಉظॲཧͬͯɺ༧ଌͰ͖ͳ͍ಈ͖Λͦ͠͏ •͔֬ʹͦΕ͸ͦ͏ •༧ଌͰ͖ͳ͍ಈ͖Λͦ͠͏ •ྫ֎ىͬͨ࣌͜ɺͲ͏ͳΔͷ͔෼͔Βͳ͍ •ʮ͜ͷฒߦʹಈ͍ͯΔλεΫɺexceptͨ͠ΒͲ͏ͳΔͷʁʯ •ྫ֎ൃੜ࣌ɺଞͷλεΫ͸͍͍ͬͨ…
21. asyncio 使 ？ •ඇಉظॲཧͬͯɺ༧ଌͰ͖ͳ͍ಈ͖Λͦ͠͏ •͔֬ʹͦΕ͸ͦ͏ •༧ଌͰ͖ͳ͍ಈ͖Λͦ͠͏ •ྫ֎ىͬͨ࣌͜ɺͲ͏ͳΔͷ͔෼͔Βͳ͍ •ʮ͜ͷฒߦʹಈ͍ͯΔλεΫɺexceptͨ͠ΒͲ͏ͳΔͷʁʯ •ྫ֎ൃੜ࣌ɺଞͷλεΫ͸͍͍ͬͨ… •͜ΕΛղܾͯ͘͠ΕΔ৽ػೳ
22. asyncio.TaskGroup
23. asyncio.TaskGroup 例外・キャンセル
24. 本⽇
25. 本⽇ •asyncioΛར༻͢Δ্Ͱͷྫ֎ॲཧɾΩϟϯηϧ
26. 本⽇ •asyncioΛར༻͢Δ্Ͱͷྫ֎ॲཧɾΩϟϯηϧ •͍··ͰʢPython 3.10Ҏલʣͱ͜Ε͔ΒʢPython 3.11ʣΛͦΕͧΕ
27. 本⽇ •asyncioΛར༻͢Δ্Ͱͷྫ֎ॲཧɾΩϟϯηϧ •͍··ͰʢPython 3.10Ҏલʣͱ͜Ε͔ΒʢPython 3.11ʣΛͦΕͧΕ •ྫ֎͜Μͳʹ؆୯ʹॻ͚ΔΜͩʂ
28. 本⽇ •asyncioΛར༻͢Δ্Ͱͷྫ֎ॲཧɾΩϟϯηϧ •͍··ͰʢPython 3.10Ҏલʣͱ͜Ε͔ΒʢPython 3.11ʣΛͦΕͧΕ •ྫ֎͜Μͳʹ؆୯ʹॻ͚ΔΜͩʂ •Ωϟϯηϧͬͯ͜͏ͳͬͯΔΜͩ
29. 本⽇ •asyncioΛར༻͢Δ্Ͱͷྫ֎ॲཧɾΩϟϯηϧ •͍··ͰʢPython 3.10Ҏલʣͱ͜Ε͔ΒʢPython 3.11ʣΛͦΕͧΕ •ྫ֎͜Μͳʹ؆୯ʹॻ͚ΔΜͩʂ •Ωϟϯηϧͬͯ͜͏ͳͬͯΔΜͩ •asyncio.TaskGroup ࢼͯ͠ΈΑ͏ʙ
30. 本⽇ •asyncioΛར༻͢Δ্Ͱͷྫ֎ॲཧɾΩϟϯηϧ •͍··ͰʢPython 3.10Ҏલʣͱ͜Ε͔ΒʢPython 3.11ʣΛͦΕͧΕ •ྫ֎͜Μͳʹ؆୯ʹॻ͚ΔΜͩʂ •Ωϟϯηϧͬͯ͜͏ͳͬͯΔΜͩ •ʮ༧ଌՄೳʯͰʮ҆શʯͳasyncioͷॻ͖ํ •asyncio.TaskGroup ࢼͯ͠ΈΑ͏ʙ
31. 本⽇ •asyncioΛར༻͢Δ্Ͱͷྫ֎ॲཧɾΩϟϯηϧ •͍··ͰʢPython 3.10Ҏલʣͱ͜Ε͔ΒʢPython 3.11ʣΛͦΕͧΕ •ྫ֎͜Μͳʹ؆୯ʹॻ͚ΔΜͩʂ •Ωϟϯηϧͬͯ͜͏ͳͬͯΔΜͩ •ʮ༧ଌՄೳʯͰʮ҆શʯͳasyncioͷॻ͖ํ •৽͍͠ఆ൪ͱͳΔ “Hello-ish world” •asyncio.TaskGroup ࢼͯ͠ΈΑ͏ʙ
32. （ 話 ？） •େ͖͘2ͭ
33. （ 話 ？） •େ͖͘2ͭ •Python Core Developer Yury SelivanovࢯͷπΠʔτʢasync/await ͷAuthorʣ •Taskgroup͕merge͞Εͨ࣌ʹڵฃͷπΠʔτΛ࿈౤͍ͯͨ͠ •υΩϡϝϯτಡΜͰ΋Α͘෼͔Βͳ͍ •ͳʹ͕ͦΜͳʹ͍͍ͷ͔͠Β…🤔
34. （ 話 ？） •͓ੈ࿩ʹͳ͍ͬͯΔେ޷͖ͳຊʮUsing Asyncio in Pythonʯ •෼͔Βͳ͍ίʔυ͕͋ͬͨ •େ͖͘2ͭ •Quickstart - Example 3-2.
35. •Quickstart - Example 3-2. import asyncio import time async def main(): print(f"{time.ctime()} Hello!") await asyncio.sleep(1.0) print(f"{time.ctime()} GoodBye!") loop = asyncio.get_event_loop() task = loop.create_task(main()) loop.run_until_complete(task) pending = asyncio.all_tasks(loop=loop) for task in pending: task.cancel() group = asyncio.gather(*pending, return_exceptions=True) loop.run_until_complete(group) loop.close()
36. （ 話 ？） •͓ੈ࿩ʹͳ͍ͬͯΔຊʮUsing Asyncio in Pythonʯ •෼͔Βͳ͍ίʔυ͕͋ͬͨ •େ͖͘2ͭ •Quickstart - Example 3-2.
37. （ 話 ？） •͓ੈ࿩ʹͳ͍ͬͯΔຊʮUsing Asyncio in Pythonʯ •෼͔Βͳ͍ίʔυ͕͋ͬͨ •େ͖͘2ͭ •Quickstart - Example 3-2. The “Hello-ish World” of Asyncio
38. （ 話 ？） •͓ੈ࿩ʹͳ͍ͬͯΔຊʮUsing Asyncio in Pythonʯ •෼͔Βͳ͍ίʔυ͕͋ͬͨ •େ͖͘2ͭ •Quickstart - Example 3-2. The “Hello-ish World” of Asyncio •͜ͷίʔυΛ asyncio.TaskGroupͰ࡮৽͍ͨ͠
39. 話 ・話 •࿩͢͜ͱ •asyncioͰͷྫ֎ॲཧʢ৽ߏจ except*΋ʣ •λεΫͷΩϟϯηϧ •asyncioͷ৽͍͠ϋϩʔϫʔϧυ •࿩͞ͳ͍͜ͱ •asyncioͷجຊͷ͸ͳ͠ •ΞϓϦέʔγϣϯͰ۩ମྫ •ASGIͰͷ͸ͳ͠ ίʔυ͸ͪ͜Β IUUQTHJUIVCDPNKSGLUBML
40. 注意！ •Python 3.11͸·ͩϦϦʔε͞Ε͍ͯͳ͍ʂ •10݄3೔ϦϦʔε༧ఆͰ͕ͨ͠ɺݱࡏ10݄24೔༧ఆʹͳ͍ͬͯΔ •ಈ࡞֬ೝ͸Python 3.11.0rc2 IUUQTQFQTQZUIPOPSHQFQ •ͳ͍ͱ͸ࢥ͍·͕͢ɺasyncio.TaskGroup͕ເͷػೳʹՄೳੑ΋θϩͰ͸… •͜ͷτʔΫ͸ɺΈͳ͞·ͷ৺͔Βফ͑Δ࢓૊Έʹͳ͍ͬͯ·͢ɻ
41. asyncio.TaskGroup
42. asyncio.TaskGroup •asyncio.TaskGroupͷػೳ •ෳ਺ͷλεΫΛ·ͱΊͯಉ࣌ʹॲཧ͢Δ
43. asyncio.TaskGroup •asyncio.TaskGroupͷػೳ •ෳ਺ͷλεΫΛ·ͱΊͯಉ࣌ʹॲཧ͢Δ •Python 3.10Ҏલʹ΋ಉ༷ͷػೳ͕͋Δ •asyncio.gather()΍asyncio.wait() ͳͲ
44. asyncio.TaskGroup •asyncio.TaskGroupͷػೳ •ෳ਺ͷλεΫΛ·ͱΊͯಉ࣌ʹॲཧ͢Δ •Python 3.10Ҏલʹ΋ಉ༷ͷػೳ͕͋Δ •asyncio.gather()΍asyncio.wait() ͳͲ •·ͣ͸ެࣜυΩϡϝϯτ͔ΒݟͯΈ·͠ΐ͏
45. import asyncio async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(some_coro(...)) task2 = tg.create_task(another_coro(...)) print("Both tasks have completed now.") asycio.TaskGroup
46. import asyncio async def main(): await asyncio.gather( some_coro(...), another_coro(...) ) print("Both tasks have completed now.") asycio.TaskGroup
47. •asyncio.TaskGroupͷಛ௃ •ෳ਺ͷλεΫΛ·ͱΊͯॲཧ͢Δ •Python 3.10Ҏલʹ΋͋Δ •asyncio.gather()΍asyncio.wait() •ͦΕΒͱҟͳΔɺେ͖ͳಛ௃͕2ͭ͋Δ asycio.TaskGroup •ಉ࣌ʹൃੜͨ͠ྫ֎ͷัଊ •ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ
48. •ಉ࣌ʹൃੜͨ͠ྫ֎ͷัଊ •ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ asycio.TaskGroup 特徴
49. •ಉ࣌ʹൃੜͨ͠ྫ֎ͷัଊ •ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ asycio.TaskGroup 特徴
50. •ෳ਺ͷλεΫΛ·ͱΊͯॲཧ͢Δ ಉ࣌ʹൃੜͨ͠ྫ֎ͷัଊ •౰વɺྫ֎΋ಉ࣌ʹൃੜ͢Δ৔߹͕͋Δ •Python 3.10ҎલͰͲ͏΍ͬͯัଊ͢Δͷ͔ݟͯΈ·͠ΐ͏ •Python 3.7Ͱ௥Ճ͞ΕͨߴϨϕϧAPI asyncio.gather() Λར༻ •asyncio.gather() ʹ͸ྫ֎ʹؔ͢ΔΦϓγϣϯʮreturn_exceptionsʯ •return_exceptions ࢦఆͳ͠ •return_exceptions ࢦఆ͋Γ •ࢦఆͨ͠λεΫʢඇಉظؔ਺ʣΛಉ࣌ʹ࣮ߦ
51. •ಉ࣌ʹ࣮ߦ͢Δඇಉظؔ਺Λ༻ҙ - asycn def Ͱఆٛ͢Δίϧʔνϯ 3ͭ༻ҙ ࣄલ४උ
52. •ಉ࣌ʹ࣮ߦ͢Δඇಉظؔ਺Λ༻ҙ - asycn def Ͱఆٛ͢Δίϧʔνϯ 3ͭ༻ҙ ࣄલ४උ import asyncio async def coro_success(): return "੒ޭ" async def coro_value_err(): raise ValueError async def coro_type_err(): raise TypeError
53. •asyncio.gather - return_exceptions ࢦఆͳ͠ •asyncio.gather - return_exceptions ࢦఆ͋Γ
54. •asyncio.gather - return_exceptions ࢦఆͳ͠ •asyncio.gather - return_exceptions ࢦఆ͋Γ
55. asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}") asyncio.run(main()) ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
56. asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}") asyncio.run(main()) ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
57. asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}") asyncio.run(main()) ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
58. asyncio.gather - return_exceptions ࢦఆͳ͠ $ python310 1_asyncio_gather_except.py async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}") asyncio.run(main()) ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
59. asyncio.gather - return_exceptions ࢦఆͳ͠ $ python310 1_asyncio_gather_except.py err=ValueError() $ python310 async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}") asyncio.run(main()) ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
60. asyncio.gather - return_exceptions ࢦఆͳ͠ $ python310 1_asyncio_gather_except.py err=ValueError() $ python310 ValueErrorͷΈ TypeError͸ัଊͰ͖ͳ͍ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}") asyncio.run(main()) ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
61. asyncio.gather - return_exceptions ࢦఆͳ͠ $ python310 1_asyncio_gather_except.py err=ValueError() $ python310 ValueErrorͷΈ TypeError͸ัଊͰ͖ͳ͍ ࠷ॳͷྫ֎ͷΈัଊ ͋ͱ͸ѲΓͭͿ͠·͢ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}") asyncio.run(main()) ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
62. •asyncio.gather - return_exceptions ࢦఆͳ͠ •asyncio.gather - return_exceptions ࢦఆ͋Γ
63. •asyncio.gather - return_exceptions ࢦఆͳ͠ •asyncio.gather - return_exceptions ࢦఆ͋Γ return_exceptions ࢦఆ͋Γͷ৔߹ɺ ͢΂ͯͷλεΫΛ࣮ߦͨ͠ޙʹ݁ՌΛϦετͰऔಘ͢Δ
64. •asyncio.gather - return_exceptions ࢦఆͳ͠ •asyncio.gather - return_exceptions ࢦఆ͋Γ return_exceptions ࢦఆ͋Γͷ৔߹ɺ ͢΂ͯͷλεΫΛ࣮ߦͨ͠ޙʹ݁ՌΛϦετͰऔಘ͢Δ ໭Γ஋ͷϦετΛνΣοΫ͢Δඞཁ͕͋Δ
65. asyncio.gather - return_exceptions ࢦఆ͋Γ async def main(): """return_exceptions=True͋Γ""" results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err(), return_exceptions=True) print(f"{results=}") ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
66. asyncio.gather - return_exceptions ࢦఆ͋Γ async def main(): """return_exceptions=True͋Γ""" results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err(), return_exceptions=True) print(f"{results=}") ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
67. asyncio.gather - return_exceptions ࢦఆ͋Γ async def main(): """return_exceptions=True͋Γ""" results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err(), return_exceptions=True) print(f"{results=}") ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
68. asyncio.gather - return_exceptions ࢦఆ͋Γ $ python310 2_asyncio_gather_except_true.py async def main(): """return_exceptions=True͋Γ""" results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err(), return_exceptions=True) print(f"{results=}") ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
69. asyncio.gather - return_exceptions ࢦఆ͋Γ $ python310 2_asyncio_gather_except_true.py async def main(): """return_exceptions=True͋Γ""" results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err(), return_exceptions=True) print(f"{results=}") results=['੒ޭ', ValueError(), TypeError()] $ python310 ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
70. asyncio.gather - return_exceptions ࢦఆ͋Γ $ python310 2_asyncio_gather_except_true.py async def main(): """return_exceptions=True͋Γ""" results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err(), return_exceptions=True) print(f"{results=}") results=['੒ޭ', ValueError(), TypeError()] $ python310 ͢΂ͯͷ݁ՌΛϦετͰऔಘ ͲΜͳྫ֎͕ൃੜ͔ͨ֬͠ೝ͕ඞཁ ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
71. asyncio.gather - return_exceptions ࢦఆ͋Γ for result in results: match result: case ValueError(): print("ValueError") case TypeError(): print("TypeError") async def main(): """return_exceptions=True͋Γ""" results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err(), return_exceptions=True) print(f"{results=}") ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
72. asyncio.gather - return_exceptions ࢦఆ͋Γ for result in results: match result: case ValueError(): print("ValueError") case TypeError(): print("TypeError") async def main(): """return_exceptions=True͋Γ""" results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err(), return_exceptions=True) print(f"{results=}") ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
73. asyncio.gather - return_exceptions ࢦఆ͋Γ $ python310 2_asyncio_gather_except_true.py async def main(): """return_exceptions=True͋Γ""" results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err(), return_exceptions=True) print(f"{results=}") for result in results: match result: case ValueError(): print("ValueError") case TypeError(): print("TypeError") ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
74. asyncio.gather - return_exceptions ࢦఆ͋Γ $ python310 2_asyncio_gather_except_true.py async def main(): """return_exceptions=True͋Γ""" results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err(), return_exceptions=True) print(f"{results=}") results=['੒ޭ', ValueError(), TypeError()] ValueError() for result in results: match result: case ValueError(): print("ValueError") case TypeError(): print("TypeError") TypeError() ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
75. asyncio.gather - return_exceptions ࢦఆ͋Γ $ python310 2_asyncio_gather_except_true.py async def main(): """return_exceptions=True͋Γ""" results = await asyncio.gather( coro_success(), coro_value_err(), coro_type_err(), return_exceptions=True) print(f"{results=}") results=['੒ޭ', ValueError(), TypeError()] ValueError() for result in results: match result: case ValueError(): print("ValueError") case TypeError(): print("TypeError") TypeError() ݁ՌͷνΣοΫ͕ඞཁ ͢΂ͯͷλεΫͷ࣮ߦ͕ඞཁ ಉ࣌ʹൃੜ͢Δྫ֎ͷัଊ
76. ಉ࣌ʹൃੜͨ͠ྫ֎ͷัଊ Python 3.10Ҏલͷ՝୊ •asyncio.gather() ʹ͸ྫ֎ʹؔ͢ΔΦϓγϣϯʮreturn_exceptionsʯ •return_exceptions ࢦఆͳ͠ •return_exceptions ࢦఆ͋Γ
77. ಉ࣌ʹൃੜͨ͠ྫ֎ͷัଊ Python 3.10Ҏલͷ՝୊ •࠷ॳͷྫ֎Ҏ֎ัଊͰ͖ͳ͍ •ൃੜͨ͠ྫ֎Λ͢΂ͯه࿥Ͱ͖ͳ͍ •໭Γ஋ͷϦετΛνΣοΫ͢Δඞཁ͕͋Δ •͢΂ͯͷλεΫΛ࣮ߦ͠ͳ͚Ε͹ͳΒͳ͍ •ͨͱ͑͹ɺ10ݸͷHTTPϦΫΤετΛಉ࣌ʹߦ͏ॲཧ •࠷ॳͷλεΫʹྫ֎͕ൃੜ •࢒Γͷࣦഊ͢Δ͔΋͠Εͳ͍9͕ͭ׬ྃ͢Δ·Ͱ଴ͭ͜ͱʹͳΔ ʢ݁Ռ10ݸ͢΂͕ͯಉ͡Τϥʔʹͳͬͨͱͯ͠΋Ͱ͢ʣ •return_exceptions ࢦఆͳ͠ •return_exceptions ࢦఆ͋Γ
78. ಉ࣌ʹൃੜͨ͠ྫ֎ͷัଊ Python 3.10Ҏલͷ՝୊ •࠷ॳͷྫ֎Ҏ֎ัଊͰ͖ͳ͍ •ൃੜͨ͠ྫ֎Λ͢΂ͯه࿥Ͱ͖ͳ͍ •໭Γ஋ͷϦετΛνΣοΫ͢Δඞཁ͕͋Δ •͢΂ͯͷλεΫΛ࣮ߦ͠ͳ͚Ε͹ͳΒͳ͍ •return_exceptions ࢦఆͳ͠ •return_exceptions ࢦఆ͋Γ •ղܾ͢Δͷ͕ɺasyncio.TaskGroupͱ৽ߏจʮexcept*ʯ
79. •ಉ࣌ʹ࣮ߦ͢Δඇಉظؔ਺Λ༻ҙ - asycn def Ͱఆٛ͢Δίϧʔνϯ 3ͭ༻ҙ ࣄલ४උ - มߋͳ͠ import asyncio async def coro_success(): return "੒ޭ" async def coro_value_err(): raise ValueError async def coro_type_err(): raise TypeError
80. async def main(): asycio.TaskGroup 例外捕捉 async with asyncio.TaskGroup() as tg: task1 = tg.create_task(coro_success()) task2 = tg.create_task(coro_value_err()) task3 = tg.create_task(coro_type_err()) results = [task1.result(), task2.result(), task3.result()]
81. asycio.TaskGroup 例外捕捉 try: async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(coro_success()) task2 = tg.create_task(coro_value_err()) task3 = tg.create_task(coro_type_err()) results = [task1.result(), task2.result(), task3.result()]
82. asycio.TaskGroup 例外捕捉 async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(coro_success()) task2 = tg.create_task(coro_value_err()) task3 = tg.create_task(coro_type_err()) results = [task1.result(), task2.result(), task3.result()] except* ValueError as err: print(f"{err=}") try:
83. asycio.TaskGroup 例外捕捉 try: async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(coro_success()) task2 = tg.create_task(coro_value_err()) task3 = tg.create_task(coro_type_err()) results = [task1.result(), task2.result(), task3.result()] except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f"{err=}")
84. asycio.TaskGroup 例外捕捉 try: async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(coro_success()) task2 = tg.create_task(coro_value_err()) task3 = tg.create_task(coro_type_err()) results = [task1.result(), task2.result(), task3.result()] except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f"{err=}") ಉظॲཧͷΑ͏ʹexceptͰัଊͰ͖Δ
85. asycio.TaskGroup 例外捕捉 try: async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(coro_success()) task2 = tg.create_task(coro_value_err()) task3 = tg.create_task(coro_type_err()) results = [task1.result(), task2.result(), task3.result()] except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f"{err=}")
86. asycio.TaskGroup 例外捕捉 try: async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(coro_success()) task2 = tg.create_task(coro_value_err()) task3 = tg.create_task(coro_type_err()) results = [task1.result(), task2.result(), task3.result()] except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f"{err=}") $ python311 3_asyncio_taskgroup_except.py
87. asycio.TaskGroup 例外捕捉 try: async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(coro_success()) task2 = tg.create_task(coro_value_err()) task3 = tg.create_task(coro_type_err()) results = [task1.result(), task2.result(), task3.result()] except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f"{err=}") $ python311 3_asyncio_taskgroup_except.py err=ExceptionGroup('unhandled errors in a TaskGroup', [ValueError()]) err=ExceptionGroup('unhandled errors in a TaskGroup', [TypeError()]) $ python311
88. asycio.TaskGroup 例外捕捉 try: async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(coro_success()) task2 = tg.create_task(coro_value_err()) task3 = tg.create_task(coro_type_err()) results = [task1.result(), task2.result(), task3.result()] except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f"{err=}") $ python311 3_asyncio_taskgroup_except.py err=ExceptionGroup('unhandled errors in a TaskGroup', [ValueError()]) err=ExceptionGroup('unhandled errors in a TaskGroup', [TypeError()]) $ python311 2ͭͷExceptionΛัଊͰ͖͍ͯΔ
89. asyncio.TaskGroupͱ৽ߏจʮexcept*ʯ •ಉ࣌ʹൃੜ͢Δྫ֎ΛัଊͰ͖Δ •ಉظॲཧͱಉ͡Α͏ͳॻ͖ํͰಡΈ΍͍͢ asyncio.TaskGroupͷ1ͭ໨ͷಛ௃Ͱ͢
90. asycio.TaskGroup 例外捕捉 try: async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(coro_success()) task2 = tg.create_task(coro_value_err()) task3 = tg.create_task(coro_type_err()) results = [task1.result(), task2.result(), task3.result()] except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f"{err=}")
91. asycio.TaskGroup 例外捕捉 try: async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(coro_success()) task2 = tg.create_task(coro_value_err()) task3 = tg.create_task(coro_type_err()) results = [task1.result(), task2.result(), task3.result()] except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f"{err=}")
92. asycio.TaskGroup 例外捕捉 try: async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(coro_success()) task2 = tg.create_task(coro_value_err()) task3 = tg.create_task(coro_type_err()) results = [task1.result(), task2.result(), task3.result()] except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f"{err=}")
93. asycio.TaskGroup 例外捕捉 except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f"{err=}") except* except*
94. asycio.TaskGroup 例外捕捉 except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f"{err=}") except* except* err=ExceptionGroup('unhandled errors in a TaskGroup', [ValueError()]) err=ExceptionGroup('unhandled errors in a TaskGroup', [TypeError()])
95. 新構⽂ except* except* •PEP 654: Exception Groups and except*. •Python 3.11ͷ৽ߏจ
96. 新構⽂ except* except* •PEP 654: Exception Groups and except*. •Python 3.11ͷ৽ߏจ •૊ΈࠐΈͷྫ֎ܕʹ ExceptionGroup (3.11௥Ճ)ͱ߹Θͤͯ࢖͏
97. 新構⽂ except* except* •PEP 654: Exception Groups and except*. •Python 3.11ͷ৽ߏจ •૊ΈࠐΈͷྫ֎ܕʹ ExceptionGroup (3.11௥Ճ)ͱ߹Θͤͯ࢖͏ •ExceptionGroup ͱ͸ •ؔ࿈ੑͷͳ͍ෳ਺ͷྫ֎Λൃੜͤ͞Δඞཁ͕͋Δ৔߹ʹར༻͢Δ
98. 新構⽂ except* except* •PEP 654: Exception Groups and except*. •Python 3.11ͷ৽ߏจ •૊ΈࠐΈͷྫ֎ܕʹ ExceptionGroup (3.11௥Ճ)ͱ߹Θͤͯ࢖͏ •ExceptionGroup ͱ͸ •ؔ࿈ੑͷͳ͍ෳ਺ͷྫ֎Λൃੜͤ͞Δඞཁ͕͋Δ৔߹ʹར༻͢Δ •ExceptionGroup(“ϝοηʔδ”, [ValueError(1), TypeError(2)])
99. 新構⽂ except* except* •PEP 654: Exception Groups and except*. •Python 3.11ͷ৽ߏจ •૊ΈࠐΈͷྫ֎ܕʹ ExceptionGroup (3.11௥Ճ)ͱ߹Θͤͯ࢖͏ •ExceptionGroup •ؔ࿈ੑͷͳ͍ෳ਺ͷྫ֎Λൃੜͤ͞Δඞཁ͕͋Δ৔߹ʹར༻͢Δ •try except Ͱ΋ัଊͰ͖Δ •try except* Ͱัଊ͢Δͱෳ਺ͷexcept •ExceptionGroup(“ϝοηʔδ”, [ValueError(1), TypeError(2)]) ͱ͸
100. asycio.TaskGroup IUUQTHJUIVCDPNQZUIPODQZUIPOCMPCNBJO-JCBTZODJPUBTLHSPVQTQZ class TaskGroup: ... async def __aexit__(self, et, exc, tb): ... if self._errors: # Exceptions are heavy objects that can have object # cycles (bad for GC); let's not keep a reference to # a bunch of them. errors = self._errors self._errors = None me = BaseExceptionGroup('unhandled errors in a TaskGroup', errors) raise me from None ExceptionGroup
101. class TaskGroup: ... async def __aexit__(self, et, exc, tb): ... if self._errors: # Exceptions are heavy objects that can have object # cycles (bad for GC); let's not keep a reference to # a bunch of them. errors = self._errors self._errors = None me = BaseExceptionGroup('unhandled errors in a TaskGroup', errors) raise me from None IUUQTHJUIVCDPNQZUIPODQZUIPOCMPCNBJO-JCBTZODJPUBTLHSPVQTQZ asycio.TaskGroup ExceptionGroup
102. IUUQTHJUIVCDPNQZUIPODQZUIPOCMPCNBJO-JCBTZODJPUBTLHSPVQTQZ class TaskGroup: ... async def __aexit__(self, et, exc, tb): ... if self._errors: # Exceptions are heavy objects that can have object # cycles (bad for GC); let's not keep a reference to # a bunch of them. errors = self._errors self._errors = None me = BaseExceptionGroup('unhandled errors in a TaskGroup', errors) raise me from None asycio.TaskGroup ExceptionGroup
103. 新構⽂ except* except* ͳΜͷͨΊʹੜ·Εͨʁ
104. 新構⽂ except* except* •PEP 654: Exception Groups and except*. •PEP654ͷMotivationʢಈػʣʹ4ͭͷέʔε ͳΜͷͨΊʹੜ·Εͨʁ
105. 新構⽂ except* except* •PEP 654: Exception Groups and except*. •PEP654ͷMotivationʢಈػʣʹ4ͭͷέʔε •Concurrent errorsʢಉ࣌ʹൃੜ͢ΔΤϥʔʣ ͳΜͷͨΊʹੜ·Εͨʁ •ෳ਺ͷλεΫ͕ૹग़͢Δྫ֎Λॲཧ͢Δྑ͍ํ๏͸ɺͳ͍ •asyncio.gather()ͷ՝୊
106. 新構⽂ except* except* •PEP 654: Exception Groups and except*. •PEP654ͷMotivationʢಈػʣʹ4ͭͷέʔε •Concurrent errorsʢಉ࣌ʹൃੜ͢ΔΤϥʔʣ ͳΜͷͨΊʹੜ·Εͨʁ •ෳ਺ͷλεΫ͕ૹग़͢Δྫ֎Λॲཧ͢Δྑ͍ํ๏͸ɺͳ͍ •asyncio.gather()ͷ՝୊ •except* ߏจ͸ඇಉظॲཧͷͨΊʹ࣮૷͞Εͨɺͱݴͬͯ΋աݴͰ͸ͳ͍Α͏Ͱ͢
107. 新構⽂ except* except* ͳΜͷͨΊʹੜ·Εͨʁ •except* ߏจ͸ඇಉظॲཧͷͨΊʹ࣮૷͞Εͨɺͱݴͬͯ΋աݴͰ͸ͳ͍Α͏Ͱ͢ •Python 3.11ͷ৽ػೳ(ͦͷ4ʣPEP 654 ྫ֎άϧʔϓͱTaskGroup •https://www.python.jp/news/wnpython311/except-grp.html •The 2021 Python Language Summit: PEP 654 — Exception Groups and except* •https://pyfound.blogspot.com/2021/05/the-2021-python-language-summit-pep-654.html • How Exception Groups Will Improve Error Handling in AsyncIO - Łukasz Langa | Power IT Conference •https://www.youtube.com/watch?v=Lfe2zsGS0Js
108. •ಉ࣌ʹൃੜͨ͠ྫ֎ͷัଊ asycio.TaskGroup 特徴 •ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ
109. •ಉ࣌ʹൃੜͨ͠ྫ֎ͷัଊ •ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ asycio.TaskGroup 特徴
110. •ಉ࣌ʹൃੜͨ͠ྫ֎ͷัଊ •ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ •λεΫͷΩϟϯηϧͬͯͲ͏΍Δͷʁ asycio.TaskGroup 特徴
111. •ಉ࣌ʹൃੜͨ͠ྫ֎ͷัଊ •ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ •λεΫͷΩϟϯηϧͬͯͲ͏΍Δͷʁ •Python 3.10Ҏલ - asyncio.gather() •Python 3.11 - asyncio.TaskGroup() asycio.TaskGroup 特徴
112. ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ •ྫ֎͕ൃੜͨ͠৔߹ɺಉ࣌ʹ࣮ߦ͍ͯͨ͠࢒ΓͷλεΫ͸Ͳ͏ͳΔͷͰ͠ΐ͏͔ʁ
113. ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ •ྫ֎͕ൃੜͨ͠৔߹ɺಉ࣌ʹ࣮ߦ͍ͯͨ͠࢒ΓͷλεΫ͸Ͳ͏ͳΔͷͰ͠ΐ͏͔ʁ •࢒ΓͷλεΫ͕ͦͷ··࣮ߦ͞Εͯ͠·͏έʔε͕͋Δ
114. ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ •ྫ֎͕ൃੜͨ͠৔߹ɺಉ࣌ʹ࣮ߦ͍ͯͨ͠࢒ΓͷλεΫ͸Ͳ͏ͳΔͷͰ͠ΐ͏͔ʁ •࢒ΓͷλεΫ͕ͦͷ··࣮ߦ͞Εͯ͠·͏έʔε͕͋Δ •asyncio.gather()Λྫʹ࢒ͬͯ͠·͏έʔεΛΈͯΈ·͠ΐ͏
115. •ඇಉظؔ਺Λ1ͭ௥Ճ - ͢͜͠଴ͭ ࣄલ४උ - 1ͭඇಉظؔ਺Λ௥Ճ import asyncio async def coro_success(): return "੒ޭ" async def coro_value_err(): raise ValueError async def coro_type_err(): raise TypeError มߋͳ͠ มߋͳ͠
116. •ඇಉظؔ਺Λ1ͭ௥Ճ - ͢͜͠଴ͭ ࣄલ४උ - 1ͭඇಉظؔ਺Λ௥Ճ import asyncio async def coro_success(): return "੒ޭ" async def coro_value_err(): raise ValueError async def coro_long(): await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" มߋͳ͠ มߋͳ͠ ௥Ճ
117. λεΫ͕࢒ͬͯ͠·͏έʔε - asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_long() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") asyncio.run(main())
118. λεΫ͕࢒ͬͯ͠·͏έʔε - asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_long() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") asyncio.run(main())
119. λεΫ͕࢒ͬͯ͠·͏έʔε - asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_long() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") asyncio.run(main())
120. λεΫ͕࢒ͬͯ͠·͏έʔε - asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_long() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") asyncio.run(main())
121. λεΫ͕࢒ͬͯ͠·͏έʔε - asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_long() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") asyncio.run(main()) $ python310 4_remaining_tasks.py
122. λεΫ͕࢒ͬͯ͠·͏έʔε - asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_long() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") asyncio.run(main()) $ python310 4_remaining_tasks.py err=ValueError() ऴྃ
123. λεΫ͕࢒ͬͯ͠·͏έʔε - asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_long() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") asyncio.run(main()) $ python310 4_remaining_tasks.py err=ValueError() ऴྃ ׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢
124. λεΫ͕࢒ͬͯ͠·͏έʔε - asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_long() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") asyncio.run(main()) $ python310 4_remaining_tasks.py err=ValueError() ऴྃ ׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢ ྫ֎͕ൃੜͨ͠৔߹ ଞͷλεΫ͸ಈ͍ͨ·· 
 ಈ࡞Λ༧ଌͮ͠Β͍
125. λεΫ͕࢒ͬͯ͠·͏έʔε - asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_long() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") asyncio.run(main()) $ python310 4_remaining_tasks.py err=ValueError() ऴྃ ׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢ ɾࢭΊ͍ͨ ɾϩʔϧόοΫ͍ͨ͠ ྫ֎͕ൃੜͨ͠৔߹ ଞͷλεΫ͸ಈ͍ͨ·· 
 ಈ࡞Λ༧ଌͮ͠Β͍
126. λεΫ͕࢒ͬͯ͠·͏έʔε - asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_long() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") asyncio.run(main()) $ python310 4_remaining_tasks.py err=ValueError() ऴྃ ׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢ ɾࢭΊ͍ͨ ɾϩʔϧόοΫ͍ͨ͠ ྫ֎͕ൃੜͨ͠৔߹ ଞͷλεΫ͸ಈ͍ͨ·· 
 ಈ࡞Λ༧ଌͮ͠Β͍
127. ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ •ྫ֎͕ൃੜͨ͠৔߹ɺಉ࣌ʹ࣮ߦ͍ͯͨ͠࢒ΓͷλεΫ͸Ͳ͏ͳΔͷͰ͠ΐ͏͔ʁ •࢒ΓͷλεΫ͕ͦͷ··࣮ߦ͞Εͯ͠·͏έʔε͕͋Δ •λεΫΛΩϟϯηϧ͢Δ ʢΩϟϯηϧ͸ɺ3.11Ͱ௥Ճ͞Εͨ΋ͷͰ͸ͳ͍ʣ
128. ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ •ྫ֎͕ൃੜͨ͠৔߹ɺಉ࣌ʹ࣮ߦ͍ͯͨ͠࢒ΓͷλεΫ͸Ͳ͏ͳΔͷͰ͠ΐ͏͔ʁ •࢒ΓͷλεΫ͕ͦͷ··࣮ߦ͞Εͯ͠·͏έʔε͕͋Δ •λεΫΛΩϟϯηϧ͢Δ ʢΩϟϯηϧ͸ɺ3.11Ͱ௥Ճ͞Εͨ΋ͷͰ͸ͳ͍ʣ •Ωϟϯηϧͷجຊ •3.10ҎલͰasyncio.gather()Λར༻ͨ͠৔߹ͷΩϟϯηϧ •λεΫ͕࢒ͬͯ͠·͏ॲཧΛमਖ਼͍͖ͯ͠·͠ΐ͏ ͢͜͠ίʔυ͕௕͘ͳΓ·͢ 🙏
129. ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ •λεΫ͕࢒ͬͯ͠·͏ॲཧΛमਖ਼͍͖ͯ͠·͠ΐ͏ •Ωϟϯηϧ͞ΕΔඇಉظؔ਺ʢcoro_long()ʣɿ •࢒ͬͯΔλεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ •Ωϟϯηϧޙॲཧͷ׬ྃΛ଴ͭ Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ •मਖ਼ͷ؍఺͸3ͭ
130. ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ •λεΫ͕࢒ͬͯ͠·͏ॲཧΛमਖ਼͍͖ͯ͠·͠ΐ͏ •Ωϟϯηϧ͞ΕΔඇಉظؔ਺ʢcoro_long()ʣɿ •࢒ͬͯΔλεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ •Ωϟϯηϧޙॲཧͷ׬ྃΛ଴ͭ Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ •मਖ਼ͷ؍఺͸3ͭ
131. •task.cancel() •λεΫʹΩϟϯηϧཁٻΛ͢Δ Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ
132. •task.cancel() •λεΫʹΩϟϯηϧཁٻΛ͢Δ •Ωϟϯηϧ͞ΕͨλεΫ΁ɺasyncio.CancelledErrorྫ֎͕ૹग़͞ΕΔ Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ
133. •task.cancel() •λεΫʹΩϟϯηϧཁٻΛ͢Δ •Ωϟϯηϧ͞ΕͨλεΫ΁ɺasyncio.CancelledErrorྫ֎͕ૹग़͞ΕΔ •ͦͷͨΊɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛड͚औΔඞཁ͕͋Δ Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ
134. •task.cancel() •λεΫʹΩϟϯηϧཁٻΛ͢Δ •Ωϟϯηϧ͞ΕͨλεΫ΁ɺasyncio.CancelledErrorྫ֎͕ૹग़͞ΕΔ •ͦͷͨΊɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛड͚औΔඞཁ͕͋Δ •͞Βʹɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛ࠶ૹग़͢Δ Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ
135. •task.cancel() •λεΫʹΩϟϯηϧཁٻΛ͢Δ •Ωϟϯηϧ͞ΕͨλεΫ΁ɺasyncio.CancelledErrorྫ֎͕ૹग़͞ΕΔ •ͦͷͨΊɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛड͚औΔඞཁ͕͋Δ •͞Βʹɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛ࠶ૹग़͢Δ •ͪΐͬͱΑ͘Θ͔Βͳ͍Ͱ͢Ͷɻ࣮૷ͯ͠Έ·͠ΐ͏ɻ Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ
136. ࣄલ४උ - Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ import asyncio async def coro_success(): return "੒ޭ" async def coro_value_err(): raise ValueError async def coro_long(): มߋͳ͠ มߋͳ͠ มߋ await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" •ͦͷͨΊɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛड͚औΔඞཁ͕͋Δ •͞Βʹɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛ࠶ૹग़͢Δ
137. async def coro_long(): มߋ await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" •ͦͷͨΊɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛड͚औΔඞཁ͕͋Δ •͞Βʹɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛ࠶ૹग़͢Δ ࣄલ४උ - Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ
138. async def coro_long(): มߋ await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" try: •ͦͷͨΊɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛड͚औΔඞཁ͕͋Δ •͞Βʹɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛ࠶ૹग़͢Δ ࣄલ४උ - Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ
139. async def coro_long(): มߋ await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: •ͦͷͨΊɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛड͚औΔඞཁ͕͋Δ •͞Βʹɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛ࠶ૹग़͢Δ ࣄલ४උ - Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ
140. async def coro_long(): มߋ await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError •ͦͷͨΊɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛड͚औΔඞཁ͕͋Δ •͞Βʹɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛ࠶ૹग़͢Δ ࣄલ४උ - Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ
141. ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ •λεΫ͕࢒ͬͯ͠·͏ॲཧΛमਖ਼͍͖ͯ͠·͠ΐ͏ •Ωϟϯηϧ͞ΕΔඇಉظؔ਺ʢcoro_long()ʣɿ •࢒ͬͯΔλεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ •Ωϟϯηϧޙॲཧͷ׬ྃΛ଴ͭ Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ •मਖ਼ͷ؍఺͸3ͭ
142. ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ •λεΫ͕࢒ͬͯ͠·͏ॲཧΛमਖ਼͍͖ͯ͠·͠ΐ͏ •Ωϟϯηϧ͞ΕΔඇಉظؔ਺ʢcoro_long()ʣɿ •࢒ͬͯΔλεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ •Ωϟϯηϧޙॲཧͷ׬ྃΛ଴ͭ Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ •मਖ਼ͷ؍఺͸3ͭ
143. •λεΫʹΩϟϯηϧཁٻΛ͢Δ - Task.cancel() ࢒ͬͯΔλεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ •λεΫͷ׬ྃΛ൑ఆ͢Δ - Task.done() •Ωϟϯηϧޙॲཧͷ׬ྃΛ଴ͭ - asyncio.sleep() •ίʔυΛमਖ਼͍͖ͯ͠·͠ΐ͏
144. λεΫ͕࢒ͬͯ͠·͏έʔε → λεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ Λ௥Ճ async def main(): """return_exceptionsͳ͠""" try: print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) results = await asyncio.gather( coro_success(), coro_value_err(), coro_long() ) asyncio.run(main()) print("ऴྃ") Python 3.10Ҏલ - asyncio.gather()
145. λεΫ͕࢒ͬͯ͠·͏έʔε → λεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ Λ௥Ճ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_long() ) asyncio.run(main()) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") Python 3.10Ҏલ - asyncio.gather()
146. λεΫ͕࢒ͬͯ͠·͏έʔε → λεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ Λ௥Ճ async def main(): """return_exceptionsͳ͠""" try: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) results = await asyncio.gather(*[task1, task2, task3]) asyncio.run(main()) λεΫͷঢ়ଶΛ ֬ೝ͠΍͘͢͢Δ ॲཧͱͯ͠͸ಉ͡ print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") Python 3.10Ҏલ - asyncio.gather()
147. λεΫ͕࢒ͬͯ͠·͏έʔε → λεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ Λ௥Ճ async def main(): """return_exceptionsͳ͠""" try: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) results = await asyncio.gather(*[task1, task2, task3]) asyncio.run(main()) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") for task in [task1, task2, task3]: if task.done() is False: Task.done()Ͱ ະ׬ྃͷλεΫΛಛఆ Python 3.10Ҏલ - asyncio.gather()
148. λεΫ͕࢒ͬͯ͠·͏έʔε → λεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ Λ௥Ճ async def main(): """return_exceptionsͳ͠""" try: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) results = await asyncio.gather(*[task1, task2, task3]) asyncio.run(main()) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ ະ׬ྃͷλεΫʹର͠ Task.cancel()Λ࣮ߦ print("ऴྃ") Python 3.10Ҏલ - asyncio.gather()
149. λεΫ͕࢒ͬͯ͠·͏έʔε → λεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ Λ௥Ճ async def main(): """return_exceptionsͳ͠""" try: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) results = await asyncio.gather(*[task1, task2, task3]) asyncio.run(main()) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ ׬ྃ଴ͪͷ asyncio.sleep() print("ऴྃ") await asyncio.sleep(1) Python 3.10Ҏલ - asyncio.gather()
150. λεΫ͕࢒ͬͯ͠·͏έʔε → λεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ Λ௥Ճ async def main(): """return_exceptionsͳ͠""" try: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) results = await asyncio.gather(*[task1, task2, task3]) asyncio.run(main()) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ શମ͜Μͳײ͡ print("ऴྃ") await asyncio.sleep(1) Python 3.10Ҏલ - asyncio.gather()
151. λεΫ͕࢒ͬͯ͠·͏৔߹ͷग़ྗΛͪΐͬͱ͓͞Β͍
152. λεΫ͕࢒ͬͯ͠·͏έʔε - asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_long() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") asyncio.run(main()) $ python310 4_remaining_tasks.py err=ValueError() ऴྃ ׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢ ͓͞Β͍ मਖ਼લͷ࣮ߦ
153. λεΫ͕࢒ͬͯ͠·͏έʔε - asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_long() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") asyncio.run(main()) $ python310 4_remaining_tasks.py err=ValueError() ऴྃ ׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢ ͓͞Β͍ मਖ਼લͷ࣮ߦ ྫ֎ัଊ ऴ͕ྃग़ྗ
154. λεΫ͕࢒ͬͯ͠·͏έʔε - asyncio.gather - return_exceptions ࢦఆͳ͠ async def main(): """return_exceptionsͳ͠""" try: results = await asyncio.gather( coro_success(), coro_value_err(), coro_long() ) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) print("ऴྃ") asyncio.run(main()) $ python310 4_remaining_tasks.py err=ValueError() ऴྃ ׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢ ͓͞Β͍ मਖ਼લͷ࣮ߦ ࢒ͬͯΔλεΫ͔Βͷग़ྗ
155. async def coro_long(): มߋ await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError •ͦͷͨΊɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛड͚औΔඞཁ͕͋Δ •͞Βʹɺඇಉظؔ਺಺Ͱasyncio.CancelledErrorΛ࠶ૹग़͢Δ ࣄલ४උ - Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ
156. λεΫ͕࢒ͬͯ͠·͏έʔε → λεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ Λ௥Ճ async def main(): """return_exceptionsͳ͠""" try: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) results = await asyncio.gather(*[task1, task2, task3]) asyncio.run(main()) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) ࣮ߦͯ͠Έ·͠ΐ͏ Python 3.10Ҏલ - asyncio.gather() async def coro_long(): await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError
157. λεΫ͕࢒ͬͯ͠·͏έʔε → λεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ Λ௥Ճ async def main(): """return_exceptionsͳ͠""" try: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) results = await asyncio.gather(*[task1, task2, task3]) asyncio.run(main()) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) Python 3.10Ҏલ - asyncio.gather() $ python310 5_canceling_task_gather.py async def coro_long(): await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError
158. λεΫ͕࢒ͬͯ͠·͏έʔε → λεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ Λ௥Ճ async def main(): """return_exceptionsͳ͠""" try: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) results = await asyncio.gather(*[task1, task2, task3]) asyncio.run(main()) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) Python 3.10Ҏલ - asyncio.gather() $ python310 5_canceling_task_gather.py err=ValueError() async def coro_long(): await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError
159. λεΫ͕࢒ͬͯ͠·͏έʔε → λεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ Λ௥Ճ async def main(): """return_exceptionsͳ͠""" try: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) results = await asyncio.gather(*[task1, task2, task3]) asyncio.run(main()) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) Python 3.10Ҏલ - asyncio.gather() $ python310 5_canceling_task_gather.py err=ValueError() Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢ async def coro_long(): await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError
160. λεΫ͕࢒ͬͯ͠·͏έʔε → λεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ Λ௥Ճ async def main(): """return_exceptionsͳ͠""" try: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) results = await asyncio.gather(*[task1, task2, task3]) asyncio.run(main()) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) Python 3.10Ҏલ - asyncio.gather() $ python310 5_canceling_task_gather.py err=ValueError() Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢ async def coro_long(): await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError ऴྃ
161. λεΫ͕࢒ͬͯ͠·͏έʔε → λεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ Λ௥Ճ async def main(): """return_exceptionsͳ͠""" try: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) results = await asyncio.gather(*[task1, task2, task3]) asyncio.run(main()) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) Ωϟϯηϧ͞ΕΔͱ ඇಉظؔ਺ଆͰ ΩϟϯηϧΛัଊ Python 3.10Ҏલ - asyncio.gather() $ python310 5_canceling_task_gather.py err=ValueError() Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢ async def coro_long(): await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError ऴྃ
162. λεΫ͕࢒ͬͯ͠·͏έʔε → λεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ Λ௥Ճ async def main(): """return_exceptionsͳ͠""" try: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) results = await asyncio.gather(*[task1, task2, task3]) asyncio.run(main()) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) Ωϟϯηϧ͞ΕΔͱ ඇಉظؔ਺ଆͰ ΩϟϯηϧΛัଊ Python 3.10Ҏલ - asyncio.gather() $ python310 5_canceling_task_gather.py err=ValueError() Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢ async def coro_long(): await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError ऴྃ Ωϟϯηϧͷ͖΄Μ
163. λεΫ͕࢒ͬͯ͠·͏έʔε → λεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ Λ௥Ճ async def main(): """return_exceptionsͳ͠""" try: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) results = await asyncio.gather(*[task1, task2, task3]) asyncio.run(main()) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) Python 3.10Ҏલ - asyncio.gather() $ python310 5_canceling_task_gather.py err=ValueError() Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢ async def coro_long(): await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError ऴྃ λεΫͷঢ়ଶͷνΣοΫ Ωϟϯηϧॲཧͷ଴ͪ߹Θͤ
164. ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ •λεΫ͕࢒ͬͯ͠·͏ॲཧΛमਖ਼͍͖ͯ͠·͠ΐ͏ •Ωϟϯηϧ͞ΕΔඇಉظؔ਺ʢcoro_long()ʣɿ •࢒ͬͯΔλεΫͷ֬ೝͱΩϟϯηϧΛࢦࣔ •Ωϟϯηϧޙॲཧͷ׬ྃΛ଴ͭ Ωϟϯηϧ࣌ͷޙॲཧΛ௥Ճ •मਖ਼ͷ؍఺͸3ͭ
165. asycio.TaskGroup 処理 •ίϯςΩετϚωʔδϟʔΛൈ͚ΔλΠϛϯάͰɺ
166. asycio.TaskGroup 処理 •ίϯςΩετϚωʔδϟʔΛൈ͚ΔλΠϛϯάͰɺ •࢒ͬͨλεΫ͕Ωϟϯηϧ͞ΕΔ •Ωϟϯηϧॲཧͷ׬ྃΛ଴ͭ
167. asycio.TaskGroup 処理 •ίϯςΩετϚωʔδϟʔΛൈ͚ΔλΠϛϯάͰɺ •࢒ͬͨλεΫ͕Ωϟϯηϧ͞ΕΔ •Ωϟϯηϧॲཧͷ׬ྃΛ଴ͭ •Ҏ্ʂ
168. asycio.TaskGroup 処理 •ίϯςΩετϚωʔδϟʔΛൈ͚ΔλΠϛϯάͰɺ •࢒ͬͨλεΫ͕Ωϟϯηϧ͞ΕΔ •Ωϟϯηϧॲཧͷ׬ྃΛ଴ͭ •Ҏ্ʂ •ཁ͸ಛʹԿ΋͢Δඞཁ͸͋Γ·ͤΜɻΩϟϯηϧ͞Ε·͢ɻ
169. asycio.TaskGroup 処理 •ίϯςΩετϚωʔδϟʔΛൈ͚ΔλΠϛϯάͰɺ •࢒ͬͨλεΫ͕Ωϟϯηϧ͞ΕΔ •Ωϟϯηϧॲཧͷ׬ྃΛ଴ͭ •Ҏ্ʂ •ཁ͸ಛʹԿ΋͢Δඞཁ͸͋Γ·ͤΜɻΩϟϯηϧ͞Ε·͢ɻ ͖͞΄ͲͷίʔυΛϦϑΝΫλ͍͖ͯ͠·͠ΐ͏
170. async def main(): """return_exceptionsͳ͠""" try: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) asyncio.run(main()) print(f"{results=}") for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) asycio.TaskGroup 処理 ϦϑΝΫλϦϯά͍͖ͯ͠·͠ΐ͏ results = await asyncio.gather(*[task1, task2, task3]) except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”)
171. async def main(): """return_exceptionsͳ͠""" try: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) asyncio.run(main()) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) asycio.TaskGroup 処理 ϦϑΝΫλϦϯά͍͖ͯ͠·͠ΐ͏ results = await asyncio.gather(*[task1, task2, task3]) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”)
172. async def main(): """return_exceptionsͳ͠""" try: asyncio.run(main()) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) asycio.TaskGroup 処理 ϦϑΝΫλϦϯά͍͖ͯ͠·͠ΐ͏ async with asyncio.TaskGroup() as g: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) results = await asyncio.gather(*[task1, task2, task3]) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”)
173. async def main(): """return_exceptionsͳ͠""" try: asyncio.run(main()) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) asycio.TaskGroup 処理 ϦϑΝΫλϦϯά͍͖ͯ͠·͠ΐ͏ async with asyncio.TaskGroup() as g: task1 = asyncio.create_task(coro_success()) task2 = asyncio.create_task(coro_value_err()) task3 = asyncio.create_task(coro_long()) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”)
174. async def main(): """return_exceptionsͳ͠""" try: asyncio.run(main()) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) asycio.TaskGroup 処理 ϦϑΝΫλϦϯά͍͖ͯ͠·͠ΐ͏ async with asyncio.TaskGroup() as g: task1 = g.create_task(coro_success()) task2 = g.create_task(coro_value_err()) task3 = g.create_task(coro_long()) print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”)
175. async def main(): """return_exceptionsͳ͠""" try: asyncio.run(main()) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) asycio.TaskGroup 処理 ϦϑΝΫλϦϯά͍͖ͯ͠·͠ΐ͏ async with asyncio.TaskGroup() as g: print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) results = [task1.result(), task2.result(), task3.result()] task1 = g.create_task(coro_success()) task2 = g.create_task(coro_value_err()) task3 = g.create_task(coro_long())
176. async def main(): """return_exceptionsͳ͠""" try: asyncio.run(main()) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) asycio.TaskGroup 処理 ϦϑΝΫλϦϯά͍͖ͯ͠·͠ΐ͏ async with asyncio.TaskGroup() as g: print(f"{results=}") except ValueError as err: print(f"{err=}") except TypeError as err: print(f”{err=}”) results = [task1.result(), task2.result(), task3.result()] task1 = g.create_task(coro_success()) task2 = g.create_task(coro_value_err()) task3 = g.create_task(coro_long())
177. async def main(): """return_exceptionsͳ͠""" try: asyncio.run(main()) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) asycio.TaskGroup 処理 ϦϑΝΫλϦϯά͍͖ͯ͠·͠ΐ͏ async with asyncio.TaskGroup() as g: print(f"{results=}") except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f”{err=}”) results = [task1.result(), task2.result(), task3.result()] task1 = g.create_task(coro_success()) task2 = g.create_task(coro_value_err()) task3 = g.create_task(coro_long())
178. async def main(): """return_exceptionsͳ͠""" try: asyncio.run(main()) for task in [task1, task2, task3]: if task.done() is False: task.cancel() # ະ׬ྃͷλεΫΛΩϟϯηϧ print("ऴྃ") await asyncio.sleep(1) asycio.TaskGroup 処理 ϦϑΝΫλϦϯά͍͖ͯ͠·͠ΐ͏ async with asyncio.TaskGroup() as g: print(f"{results=}") except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f”{err=}”) results = [task1.result(), task2.result(), task3.result()] task1 = g.create_task(coro_success()) task2 = g.create_task(coro_value_err()) task3 = g.create_task(coro_long())
179. async def main(): """return_exceptionsͳ͠""" try: asyncio.run(main()) print("ऴྃ") asycio.TaskGroup 処理 ϦϑΝΫλϦϯά͍͖ͯ͠·͠ΐ͏ async with asyncio.TaskGroup() as g: print(f"{results=}") except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f”{err=}”) results = [task1.result(), task2.result(), task3.result()] task1 = g.create_task(coro_success()) task2 = g.create_task(coro_value_err()) task3 = g.create_task(coro_long())
180. async def main(): """TaskGroupͰͷΩϟϯηϧ""" try: asyncio.run(main()) print("ऴྃ") asycio.TaskGroup 処理 ϦϑΝΫλϦϯά͍͖ͯ͠·͠ΐ͏ async with asyncio.TaskGroup() as g: print(f"{results=}") except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f”{err=}”) results = [task1.result(), task2.result(), task3.result()] task1 = g.create_task(coro_success()) task2 = g.create_task(coro_value_err()) task3 = g.create_task(coro_long())
181. ࣮ߦͯ͠Έ·͠ΐ͏ async def coro_long(): await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError async def main(): """TaskGroupͰͷΩϟϯηϧ""" try: asyncio.run(main()) print("ऴྃ") async with asyncio.TaskGroup() as g: print(f"{results=}") except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f”{err=}”) results = [task1.result(), task2.result(), task3.result()] task1 = g.create_task(coro_success()) task2 = g.create_task(coro_value_err()) task3 = g.create_task(coro_long()) asycio.TaskGroup 処理 $ python311 6_cancelled_task_taskgroup.py
182. ࣮ߦͯ͠Έ·͠ΐ͏ async def coro_long(): await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError async def main(): """TaskGroupͰͷΩϟϯηϧ""" try: asyncio.run(main()) print("ऴྃ") async with asyncio.TaskGroup() as g: print(f"{results=}") except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f”{err=}”) results = [task1.result(), task2.result(), task3.result()] task1 = g.create_task(coro_success()) task2 = g.create_task(coro_value_err()) task3 = g.create_task(coro_long()) asycio.TaskGroup 処理 $ python311 6_cancelled_task_taskgroup.py Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢
183. ࣮ߦͯ͠Έ·͠ΐ͏ async def coro_long(): await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError async def main(): """TaskGroupͰͷΩϟϯηϧ""" try: asyncio.run(main()) print("ऴྃ") async with asyncio.TaskGroup() as g: print(f"{results=}") except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f”{err=}”) results = [task1.result(), task2.result(), task3.result()] task1 = g.create_task(coro_success()) task2 = g.create_task(coro_value_err()) task3 = g.create_task(coro_long()) asycio.TaskGroup 処理 $ python311 6_cancelled_task_taskgroup.py err=ExceptionGroup('unhandled errors in a TaskGroup', [ValueError()]) Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢
184. ࣮ߦͯ͠Έ·͠ΐ͏ async def coro_long(): await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError async def main(): """TaskGroupͰͷΩϟϯηϧ""" try: asyncio.run(main()) print("ऴྃ") async with asyncio.TaskGroup() as g: print(f"{results=}") except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f”{err=}”) results = [task1.result(), task2.result(), task3.result()] task1 = g.create_task(coro_success()) task2 = g.create_task(coro_value_err()) task3 = g.create_task(coro_long()) asycio.TaskGroup 処理 $ python311 6_cancelled_task_taskgroup.py err=ExceptionGroup('unhandled errors in a TaskGroup', [ValueError()]) Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢ ऴྃ
185. ྫ֎ͷัଊͱ Ωϟϯηϧޙͷॲཧͷ ॱং͕ೖΕସΘ͍ͬͯΔ async def coro_long(): await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError async def main(): """TaskGroupͰͷΩϟϯηϧ""" try: asyncio.run(main()) print("ऴྃ") async with asyncio.TaskGroup() as g: print(f"{results=}") except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f”{err=}”) results = [task1.result(), task2.result(), task3.result()] task1 = g.create_task(coro_success()) task2 = g.create_task(coro_value_err()) task3 = g.create_task(coro_long()) asycio.TaskGroup 処理 $ python311 6_cancelled_task_taskgroup.py err=ExceptionGroup('unhandled errors in a TaskGroup', [ValueError()]) Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢ ऴྃ
186. TaskGroupͷதͰ ׬݁ ༧ଌ͠΍͍͢ಈ࡞ async def coro_long(): await asyncio.sleep(1) print("׬͍ྃͯ͠ͳ͍λεΫ͕ग़ྗ͍ͯ͠·͢") return "੒ޭʁ" except asyncio.CancelledError as err: try: print("Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢") raise asyncio.CancelledError async def main(): """TaskGroupͰͷΩϟϯηϧ""" try: asyncio.run(main()) print("ऴྃ") async with asyncio.TaskGroup() as g: print(f"{results=}") except* ValueError as err: print(f"{err=}") except* TypeError as err: print(f”{err=}”) results = [task1.result(), task2.result(), task3.result()] task1 = g.create_task(coro_success()) task2 = g.create_task(coro_value_err()) task3 = g.create_task(coro_long()) asycio.TaskGroup 処理 $ python311 6_cancelled_task_taskgroup.py err=ExceptionGroup('unhandled errors in a TaskGroup', [ValueError()]) Ωϟϯηϧ͞ΕͨλεΫ͕ग़ྗ͍ͯ͠·͢ ऴྃ
187. •ಉ࣌ʹൃੜͨ͠ྫ֎ͷัଊ asycio.TaskGroup 特徴 •ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ
188. asycio.TaskGroup 特徴 •ಉ࣌ʹൃੜͨ͠ྫ֎ͷัଊ •ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ •ैདྷͷΑ͏ͳॻ͖ํͰγϯϓϧʹྫ֎Λัଊ •except* ʹΑͬͯಉ࣌ʹൃੜ͢Δྫ֎Λ༨͢͜ͱͳ͘
189. asycio.TaskGroup 特徴 •ಉ࣌ʹൃੜͨ͠ྫ֎ͷัଊ •ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ •ैདྷͷΑ͏ͳॻ͖ํͰγϯϓϧʹྫ֎Λัଊ •ࢦࣔ͢Δ͜ͱͳ͘Ωϟϯηϧ •except* ʹΑͬͯಉ࣌ʹൃੜ͢Δྫ֎Λ༨͢͜ͱͳ͘ •λεΫΛ࣮ߦ࣌ʹҙࣝ͢Δඞཁ͕ͳ͘ͳͬͨ
190. asycio.TaskGroup 特徴 •ಉ࣌ʹൃੜͨ͠ྫ֎ͷัଊ •ྫ֎ൃੜ࣌ͷλεΫͷΩϟϯηϧ •ैདྷͷΑ͏ͳॻ͖ํͰγϯϓϧʹྫ֎Λัଊ •ࢦࣔ͢Δ͜ͱͳ͘Ωϟϯηϧ •except* ʹΑͬͯಉ࣌ʹൃੜ͢Δྫ֎Λ༨͢͜ͱͳ͘ •λεΫΛ࣮ߦ࣌ʹҙࣝ͢Δඞཁ͕ͳ͘ͳͬͨ •ʮ༧ଌՄೳʯͰʮ҆શʯɺ͔ͭಡΈ΍͍͢asyncioͷॻ͖ํ •৽͍͠ “Hello-ish world”
191. ৽͍͠ “Hello-ish world” import asyncio async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(some_coro(...)) task2 = tg.create_task(another_coro(...))
192. ৽͍͠ “Hello-ish world” import asyncio async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(some_coro(...)) task2 = tg.create_task(another_coro(...)) try: except* BaseException as e: print(f"{e=}") asyncio.run(main())
193. ৽͍͠ “Hello-ish world” import asyncio async def main(): async with asyncio.TaskGroup() as tg: task1 = tg.create_task(some_coro(...)) task2 = tg.create_task(another_coro(...)) try: except* BaseException as e: print(f"{e=}") asyncio.run(main()) Python 3.11
194. •Quickstart - Example 3-2. The “Hello-ish World” of Asyncio import asyncio import time async def main(): print(f"{time.ctime()} Hello!") await asyncio.sleep(1.0) print(f"{time.ctime()} GoodBye!") loop = asyncio.get_event_loop() task = loop.create_task(main()) loop.run_until_complete(task) pending = asyncio.all_tasks(loop=loop) for task in pending: task.cancel() group = asyncio.gather(*pending, return_exceptions=True) loop.run_until_complete(group) loop.close()
195. •Quickstart - Example 3-2. import asyncio import time async def main(): print(f"{time.ctime()} Hello!") await asyncio.sleep(1.0) print(f"{time.ctime()} GoodBye!") The “Hello-ish World” of Asyncio λεΫͷঢ়ଶͷνΣοΫ Ωϟϯηϧॲཧͷ଴ͪ߹Θͤ loop = asyncio.get_event_loop() task = loop.create_task(main()) loop.run_until_complete(task) pending = asyncio.all_tasks(loop=loop) for task in pending: task.cancel() group = asyncio.gather(*pending, return_exceptions=True) loop.run_until_complete(group) loop.close()
196. •Quickstart - Example 3-2. import asyncio import time async def coro(): print(f"{time.ctime()} Hello!") await asyncio.sleep(1.0) print(f"{time.ctime()} GoodBye!") The “Hello-ish World” of Asyncio λεΫͷঢ়ଶͷνΣοΫ Ωϟϯηϧॲཧͷ଴ͪ߹Θͤ async def main(): async with asyncio.TaskGroup() as tg: task = tg.create_task(coro(...)) try: except* BaseException as e: print(f"{e=}") asyncio.run(main())
198. •asyncio͸֎෦I/OͷͨΊͷ΋ͷ •֎෦ʹґଘ͢ΔͨΊɺྫ֎΋ى͖΍͍͢
199. •asyncio.TaskGroupͷྫ֎ͷัଊͱΩϟϯηϧ •asyncio͸֎෦I/OͷͨΊͷ΋ͷ •֎෦ʹґଘ͢ΔͨΊɺྫ֎΋ى͖΍͍͢
200. •asyncio.TaskGroupͷྫ֎ͷัଊͱΩϟϯηϧ •asyncio͸֎෦I/OͷͨΊͷ΋ͷ •֎෦ʹґଘ͢ΔͨΊɺྫ֎΋ى͖΍͍͢ •ॻ͖΍ͯ͘͢ɺಡΈ΍͍͢
201. •asyncio.TaskGroupͷྫ֎ͷัଊͱΩϟϯηϧ •asyncio͸֎෦I/OͷͨΊͷ΋ͷ •֎෦ʹґଘ͢ΔͨΊɺྫ֎΋ى͖΍͍͢ •ॻ͖΍ͯ͘͢ɺಡΈ΍͍͢ •TaskGroup͞ΘͬͯΈΑ͏͔ͳ
202. •asyncio.TaskGroupͷྫ֎ͷัଊͱΩϟϯηϧ •asyncio͸֎෦I/OͷͨΊͷ΋ͷ •֎෦ʹґଘ͢ΔͨΊɺྫ֎΋ى͖΍͍͢ •ॻ͖΍ͯ͘͢ɺಡΈ΍͍͢ •TaskGroup͞ΘͬͯΈΑ͏͔ͳ •ྫ֎ɾΩϟϯηϧ͕͍··ͰͷίʔυΛݟ௚͖͔͚ͬ͢
203. •asyncio.TaskGroupͷྫ֎ͷัଊͱΩϟϯηϧ •asyncio͸֎෦I/OͷͨΊͷ΋ͷ •֎෦ʹґଘ͢ΔͨΊɺྫ֎΋ى͖΍͍͢ •ॻ͖΍ͯ͘͢ɺಡΈ΍͍͢ •TaskGroup͞ΘͬͯΈΑ͏͔ͳ •ྫ֎ɾΩϟϯηϧ͕͍··ͰͷίʔυΛݟ௚͖͔͚ͬ͢ •ΑΓշదͳasyncioϥΠϑΛ
204. •λεΫͷঢ়ଶ ऄ଍ λεΫͷঢ়ଶ •PENDING - ࣮ߦ଴ͪʢ࣮ߦத΋͜Εʣ •FINISHED - ׬ྃ •CANCELLED - Ωϟϯηϧ •task._stateͰ֬ೝͰ͖Δ •αϯϓϧίʔυ͸ঢ়ଶ΋ग़ྗͯ͠·͢ɻͥͻಈ͔ͯ͠Έ͍ͯͩ͘͞ɻ ίʔυ͸ͪ͜Β IUUQTHJUIVCDPNKSGLUBML
205. ऄ଍ TaskGroupͰHTTPX ίʔυ͸ͪ͜Β IUUQTHJUIVCDPNKSGLUBML import asyncio from time import time import httpx URL = "https://pokeapi.co/api/v2/pokemon/" async def access_url_poke(client, num: int) -> str: r = await client.get(f"{URL}{num}") pokemon = r.json() # JSONύʔε return pokemon["name"] # ϙέ໊Λൈ͘ async def main_poke(): """httpxͰϙέϞϯ151ඖҾͬ͜ൈ͘""" start = time() async with httpx.AsyncClient() as client: try: async with asyncio.TaskGroup() as tg: tasks = [ tg.create_task(access_url_poke(client, number)) for number in range(1, 151) ] except* BaseException as e: print(f"{e=}") results = [task.result() for task in tasks] print(results) print("time: ", time() - start) asyncio.run(main_poke())
206. ऄ଍ ࣮͸·ͩ·ͩ͋Δ৽ػೳʂʁ ίʔυ͸ͪ͜Β IUUQTHJUIVCDPNKSGLUBML import asyncio async def main(): try: async with asyncio.TaskGroup() as tg: task1 = tg.create_task(some_coro(...)) task2 = tg.create_task(another_coro(...)) except* BaseException as e: print(f"{e=}") with asyncio.Runner() as runner: runner.run(main()) 3.11 ৽ػೳ asyncio.Runner ͬͯͳʹʂʁ ΠϯλϥΫςΟϒηογϣϯ༻ʁʂ runΛෳ਺ճ࢖͑Δ
207. ༧ఆߘͩͬͨͱ͜Ζ 🙏 •asyncio.timeout() •ͬͦ͜Γ௥Ճ͞ΕͨPython 3.11 ৽ػೳ •wait_for ͷෆ۩߹Λड͚ͯੜ·Εͨʁʂ •Implement asyncio.timeout() context manager #90927 IUUQTHJUIVCDPNQZUIPODQZUIPOJTTVFT …
208. ༧ఆߘͩͬͨͱ͜Ζ 🙏 •asyncioਐԽͷྺ࢙ •࣮͸Python1.5͔Β͋ͬͨඇಉظػೳ asyncore •αʔυύʔςΟͰͷඇಉظ࣮૷ •curio, trio , AnyIO, quattro ͳͲͳͲ … …
209. 謝辞 •Using Asyncio in Python - Oreilly & Associates Inc •Python 3.11 Preview: Task and Exception Groups - realpython.com •https://realpython.com/python311-exception-groups/ •Python 3.11ͷ৽ػೳ(ͦͷ4ʣPEP 654 ྫ֎άϧʔϓͱTaskGroup •https://www.python.jp/news/wnpython311/except-grp.html •The 2021 Python Language Summit: PEP 654 — Exception Groups and except* •https://pyfound.blogspot.com/2021/05/the-2021-python-language-summit-pep-654.html • How Exception Groups Will Improve Error Handling in AsyncIO - Łukasz Langa | Power IT Conference •https://www.youtube.com/watch?v=Lfe2zsGS0Js
210. ご静聴ありがとうございました 👋