Pythonでライブをしよう!FoxDotを使った新時代のPython活用法 / pyconjp-2019

PyCon JP 2019 の発表資料です

Transcript

1. PythonͰϥΠϒΛ͠Α͏ʂ
   FoxDotΛ࢖ͬͨ
   ৽࣌୅ͷPython׆༻๏
   MFWFM"MM
   ాத৻ଠ࿠ !@TJO@UBOBLB
   
   IBTIUBHQZDPOKQQZDPOKQ@
   

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2. ର৅ͷํ
   w 1ZUIPOॻ͚Δ
   w Իූ͸ಡΊͳ͍͚Ͳ1ZUIPO͸ಡΊΔ
   w ϓϩάϥϛϯάͰԻָΛͭ͘Δ͜ͱʹڵຯ͕͋Δ
   w ԻָϊίτνϣοτϫΧϧ
   w Իָ༻ޠͷղઆ౳͸ল͖·͢
   

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3. ాத৻ଠ࿠
   ʢגʣ೔ຊγεςϜٕݚ(FFL-BC/"("/0ελοϑ
   Իָͱਂ໷ϥδΦ͕޷͖
   !@TJO@UBOBLB
   

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4. גࣜձࣾ೔ຊγεςϜٕݚ +4-
   
   • ࡢ೥ʹҾ͖͖ͭͮɺࠓ೥΋1Z$PO+1εϙϯαʔ
   • ࠓ೥͸ͳΜͱ(PME
   • ௕໺ݝ௕໺ࢢͷձࣾ
   • 1ZUIPO%KBOHPΛ࢖༻ͨ͠8FCΞϓϦέʔγϣϯͷडୗ։ൃٴͼɺαʔόʔϨε
   ΞʔΩςΫνϟΛ࢖༻ͨ͠ϑϩϯτΤϯυҊ݅΍*P5Ҋ݅ͱ͍ͬͨϓϩμΫτ։ൃ
   ΋΍ͬͯ·͢
   • ίϛϡχςΟεϖʔεʮ(&&,-"#/"("/0ʯͷӡӦ
   • ࠓ೥౓͔ΒϚείοτΩϟϥΫλʔ͕஀ੜ

   • ؔ౦ݍͷ͓٬༷Λத৺ʹϦϞʔτϫʔΫͰ͓࢓ࣄΛ΍Βͤͯ௖͍͍ͯΔ
   

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5. ϥΠϒίʔσΟϯά֓ཁ
   'PY%PUͷ࢖͍ํ
   %&.0
   1ZUIPOͷจ๏ͰಡΈղ͘
   ΞδΣϯμ
   

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6. Ϟνϕʔγϣϯ
   w ΋ͱ΋ͱझຯͰ%5.
   w ϥΠϒίʔσΟϯάͷଘࡏ͸஌ͬͯͨ
   w ͱ͸͍͑ϓϩάϥϛϯά͢Δඞཁͳ͘ͳ͍ʁ!
   

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7. Ϟνϕʔγϣϯ
   4PVSDFIUUQTXJSFEKQBMHPSBWFTMJWFDPEJOHEKT
   

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8. Ϟνϕʔγϣϯ
   4PVSDF(PPHMFը૾ݕࡧ
   

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9. ϥΠϒίʔσΟϯάͱ͸
   

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10. ϥΠϒίʔσΟϯάͬͯԿʁ
    > Live coding is a new direction in electronic music and
    video, and is getting somewhere interesting. Live coders
    expose and rewire the innards of software while it
    generates improvised music and/or visuals. All code
    manipulation is projected for your pleasure.
    ɹɹɹɹɹɹɹɹɹɹɹɹtoplap.org/about ΑΓҾ༻
    w 0OUIFqZQSPHSBNNJOH
    w +VTUJOUJNFQSPHSBNNJOH
    BLB
    Իָө૾ΛΠϯλϥΫςΟϒʹੜ੒͢Δ
    ϥΠϒɾύϑΥʔϚϯε
    

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11. ԿͰϥΠϒίʔσΟϯάʁ
    !%"8΍γʔέϯαͰ΋ಉ͜͡ͱͰ͖ΔͷͰ͸ʁ
    ΞϧΰϦζϛοΫͳΞϓϩʔν͕Մೳ
    ࠶ݱੑ
    ࡞ΓࠐΈ
    ۮવੑ
    ଈڵੑ
    ϧʔύʔΛ࢖ͬͨϥΠϒύϑΥʔϚϯε͕ํ޲ੑ͍͔ۙ΋ʁ
    

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12. Ͳ͏΍ͬͯϥΠϒίʔσΟϯάʁ
    

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13. Ͳ͏΍ͬͯϥΠϒίʔσΟϯάʁ
    ιϑτ໊ ݴޠ
    'PY%PU 1ZUIPO
    5JEBM$ZDMF )BTLFMM
    4POJD1J 3VCZ
    0WFSUPOF $MPKVSF
    

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14. 'PY%PU
    w 4VQFS$PMJEFSΛ1ZUIPO͔Βૢ࡞Ͱ͖ΔϥΠϒϥϦ
    w 4VQFS$PMJEFSʜԻ੠߹੒༻ͷϓϩάϥϛϯάݴޠٴ
    ͼ؀ڥ
    w IUUQTGPYEPUPSH
    w IUUQTHJUIVCDPN2JSLZ'PY%PU
    

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15. 'PY%PU
    6TFS
    X1ZUIPO4ZOUBY
    04$
    0QFO4PVOE$POUSPM
    
    

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16. 1 Clock.bpm = 120
    2 Root.default = ‘C’
    3 Scale.default = ‘major’
    4
    5 d1 >> play(“X-O-”)
    6 d2 >> play(“#”, dur=32)
    7
    8 p1 >> pluck([0,1,2,3,4,3,2,1], dur=1/2, amp=1.5)
    9 p2 >> blip(P[0,var([2,4])], dur=1/4, oct=6)
    10
    11 vo >> loop(‘some/path/file.wav’, dur=4)
    

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17. 1 Clock.bpm = 120
    2 Root.default = ‘C’
    3 Scale.default = ‘major’
    4
    5 d1 >> play(“X-O-”)
    6 d2 >> play(“#”, dur=32)
    7
    8 p1 >> pluck([0,1,2,3,4,3,2,1], dur=1/2, amp=1.5)
    9 p2 >> blip(P[0,var([2,4])], dur=1/4, oct=6)
    10
    11 vo >> loop(‘some/path/file.wav’, dur=4)
    SynthDefs
    

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18. 1 Clock.bpm = 120
    2 Root.default = ‘C’
    3 Scale.default = ‘major’
    4
    5 d1 >> play(“X-O-”)
    6 d2 >> play(“#”, dur=32)
    7
    8 p1 >> pluck([0,1,2,3,4,3,2,1], dur=1/2, amp=1.5)
    9 p2 >> blip(P[0,var([2,4])], dur=1/4, oct=6)
    10
    11 vo >> loop(‘some/path/file.wav’, dur=4)
    PlayerObject
    SynthDefs
    

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19. 1 Clock.bpm = 120
    2 Root.default = ‘C’
    3 Scale.default = ‘major’
    4
    5 d1 >> play(“X-O-”)
    6 d2 >> play(“#”, dur=32)
    7
    8 p1 >> pluck([0,1,2,3,4,3,2,1], dur=1/2, amp=1.5)
    9 p2 >> blip(P[0,var([2,4])], dur=1/4, oct=6)
    10
    11 vo >> loop(‘some/path/file.wav’, dur=4)
    PatternObject
    PlayerObject
    SynthDefs
    

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20. 1 Clock.bpm = 120
    2 Root.default = ‘C’
    3 Scale.default = ‘major’
    4
    5 d1 >> play(“X-O-”)
    6 d2 >> play(“#”, dur=32)
    7
    8 p1 >> pluck([0,1,2,3,4,3,2,1], dur=1/2, amp=1.5)
    9 p2 >> blip(P[0,var([2,4])], dur=1/4, oct=6)
    10
    11 vo >> loop(‘some/path/file.wav’, dur=4)
    TimeDependentVar
    PatternObject
    PlayerObject
    SynthDefs
    

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21. 4ZOUI%FGT
    w 'PY%PUͷσϑΥϧτͰ༻ҙ͞Ε͍ͯΔԻ৭܈
    QMBZʜυϥϜԻݯ
    w TUSPS1BUUFSO0CKFDUΛ౉͢
    w ֤จࣈʹผʑͷԻݯׂ͕ΓৼΒΕ͍ͯΔ
    MPPQʜࣗલͰ༻ҙͨ͠Ի੠ϑΝΠϧͷϧʔϓ
    w Ի੠ϑΝΠϧͷύεΛ౉͢
    ͦΕҎ֎ʜγϯηαΠβʔͬΆ͍Ի৭
    w MJTUPS1BUUFSO0CKFDUΛ౉͢
    

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22. 1MBZFS0CKFDU
    w 4ZOUI%FGTΛૢ࡞͢Δ
    w ଐੑΛฤू͢Δ͜ͱͰԻ৭΍Իߴɺ௕͞౳ΛมߋՄೳ
    1 p9 >> pluck(dur=1)
    2
    3 # 音の長さ(default: play=1/2, other=1)
    4 p9.dur = 2
    5
    6 # 音量(default: 1)
    7 p9.amp = 2
    8
    9 # 音高
    10 p9.degree = [0,1,2,3]
    11
    12 # オクターブ(default: 5)
    13 p9.oct = 7
    

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23. w ܁Γฦ͠Λදݱ͢ΔΦϒδΣΫτ
    w MJTUͷ಄ʹ1Λ͚ͭΔ
    w ࢖͍͜ͳ͢ͱ৑௕ͳίʔυΛආ͚ΒΕΔ
    1 # list
    2 plain_list = [0,1,2,3]
    3
    4 # PatternObject
    5 plain_pattern = P[0,1,2,3]
    6
    1BUUFSO0CKFDU
    

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24. w 1ZUIPOͷMJTUͱ͸ҧ͏ڍಈ
    w ศརͳϝιου͕ੜ͑ͯΔ
    1 plain_list = [0,1,2,3]
    2 plain_pattern = P[0,1,2,3]
    3
    4 # add
    5 plain_list + [4,5,6,7] # [0, 1, 2, 3, 4, 5, 6, 7]
    6 plain_pattern + [4,5,6,7] # P[4, 6, 8, 10]
    7
    8 # mul
    9 plain_list * 2 # [0, 1, 2, 3, 0, 1, 2, 3]
    10 plain_pattern * 2 # P[0, 1, 4, 6]
    11
    12 plain_pattern.reverse() # P[3,2,1,0]
    13 plain_pattern.shuffle() # P[3,1,2,0]
    14 plain_pattern.trim(3) # P[0,1,2]
    15
    1BUUFSO0CKFDU
    

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25. 5JNF%FQFOEFOU7BSJBCMFT
    w ࣌ؒͰมԽ͢Δ஋
    w $MPDLʹґଘ
    1 # 4拍ごとに0→1→2→3のように変化
    2 time_depend_var = var([0,1,2,3],4)
    3
    4 # 4拍ごとに0→1→2→3のように徐々に変化
    5 time_depend_var_linear = linvar([0,1,2,3],4)
    6
    7 # Clockに依存するので実行ごとに結果が変わる
    8 print(time_depend_var)
    9 print(time_depend_var_linear)
    10
    

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26. DEMO
    

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27. ͜Εͬͯ1ZUIPOͳͷ͔ɾɾɾʁ
    

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28. 1ZUIPOͷจ๏ʹ౰ͯ͸ΊͯΈΔ
    

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29. 1ZUIPOͷจ๏ͰಡΈղ͘'PY%PU
    1 # 何をしているのか？
    2 d1 >> play(“X-O-”)
    3
    4 # シフト演算子?
    5 x = 0b_0001_0001
    6
    7 # 左シフト演算子
    8 bin(x << 3) # 0b_1000_1000
    9 # 右シフト演算子
    10 bin(x >> 3) # 0b_10
    11
    

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30. w ಛघϝιου
    w @@IPHF@@ TFMG
    
    1 class OverrideCall:
    2 """
    3 instanceを関数呼び出ししたときの挙動を上書きする
    4 """
    5 def __call__(self):
    6 return 'call'
    7
    8 foo = OverrideCall()
    9
    10 foo() # 'call'
    1ZUIPOͷจ๏ͰಡΈղ͘'PY%PU
    

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31. w γϑτԋࢉࢠͷಈ͖Λ্ॻ͖
    1 foo = ''
    2
    3 class OverrideShift:
    4 def __rshift__(self, other):
    5 return 'override shift'
    6
    7 bar = OverrideShift()
    8 bar >> foo # override shift
    9
    1ZUIPOͷจ๏ͰಡΈղ͘'PY%PU
    

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32. ú
    1 plain_list = [0,1,2,3]
    2 plain_pattern = P[0,1,2,3]
    3
    1ZUIPOͷจ๏ͰಡΈղ͘'PY%PU
    

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33. w EJDUͷΑ͏ʹΞΫηεͨ͠ͱ͖ͷಈ͖Λ্ॻ͖
    1 class ExtDict:
    2 def __getitem__(self, args):
    3 return args
    4
    5 d = ExtDict()
    6 d['foo', 'bar'] # ('foo', 'bar')
    7
    1ZUIPOͷจ๏ͰಡΈղ͘'PY%PU
    

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34. ࠓ೔࿩ͨ͜͠ͱ·ͱΊ
    w ϥΠϒίʔσΟϯάͱ͍͏จԽ
    w 1ZUIPOͱ͍͑͹ʜ
    w σʔλ෼ੳ
    w 8FC
    w ϥΠϒίʔσΟϯάˡ/FX
    w 1ZUIPOͷಛघΫϥεͰ৭ʑมΘΔ
    w ԋࢉࢠͷڍಈ
    w ࣙॻతʹΞΫηεͨ͠ͱ͖ͷڍಈ౳ʑʜ
    

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35. More info…
    w GPYEPUPSH
    w UPQMBQPSH
    w -JWFDPEJOHͷਪਐஂମ
    w 1Z$PO$;
    w 3ZBO,JSLCSJEF1SPHSBNNJOH.VTJDGPS1FSGPSNBODF-JWFDPEJOH
    XJUI'PY%PUIUUQTXXXZPVUVCFDPNXBUDI
    W93/'#;M#FV*UT
    w 1ZUIPO-JWF$PEJOHc0,$PNQVUFS
    w ٕज़ॻలͰ൦෍IUUQTPLDPNQVUFSCPPUIQNJUFNT
    w ZPQQBPSH
    w ϥΠϒίʔσΟϯάͷॻ੶ग़ͨ͠ΓେֶͰߨ͍ٛͯ͠Δํͷ)1
    

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36. ͝ਗ਼ௌ
    ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ
    

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