ゆるいPython会

2017/11/09に学内で開催したゆる(くな)いPython会の資料です

Transcript

1. ΏΔ͘ͳ͍1ZUIPOձ
   *UFSBCMF(FOFSBUPS-BNCEB
   !BSVOFLP
   

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2. ࠓ೔ͷ಺༰
   w *UFSBCMF(FOFSBUPS
   w -BNCEBࣜ
   

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3. αϯϓϧίʔυ
   w IUUQTHJUBSVOFLPOFUBSVOFLPSPVHI@QZUIPO
   

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4. *UFSBCMF
   w *UFSBCMFͬͯʁ
   w ܁Γฦ͠ॲཧ͕Ͱ͖Δ΋ͷ
   w MJTUUVQMFEJDUFUD
   w 1ZUIPOʹ͓͍ͯ͸ɺ*UFSBUPSͱ͸ҧ͏Α
   w *UFSBUPS͸JUFS
   Λ࢖ͬͯ*UFSBCMFͳ΋ͷ͔Βੜ੒ͯ͠

   ஋ΛOFYU
   ͰݸͣͭऔΓग़͢΍ͭ
   w શ෦ు͖ग़ͨ͠ޙʹOFYU
   ΛݺͿͱྫ֎Ͱམͪ·͢
   

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5. (FOFSBUPS
   w (FOFSBUPSͬͯʁ
   w *UFSBUPSͷҰछ
   w ஋Λੜ੒͢ΔϧʔϧΛ͍࣋ͬͯͯɺݺ͹ΕΔ౓ʹॱ൪ʹు͖ग़͢΍ͭ
   w ࠷ޙ·Ͱు͖ग़ͨ͠ޙʹ΋͏ҰճݺΜͰ΋མͪ͸͠ͳ͍͚ͲԿ΋ు͔ͳ͍Α
   w ཁ͢Δʹ஗ԆධՁ
   w MJTUͳͲ͸σʔλ͕શ෦ϝϞϦʹ৐ͬͯ͠·͏ͷͰɺ

   ਺͕ଟ͍ͱ͖͸(FOFSBUPSͷํ͕লϝϞϦ
   w ͨͩ͠଎͍͔Ͳ͏͔͸ผ໰୊
   

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6. (FOFSBUPSΛ࡞ͬͯΈΔ
   def gen_odd_numbers(min: int, max: int) -> [int]:
   for n in range(min, max):
   yield 2 * n + 1
   nums = gen_odd_numbers(0, 100)
   for n in nums:
   print(n)
   

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7. ࿅श໰୊
   w 'J[[#V[[Λు͖ग़͢δΣωϨʔλΛ࡞ͬͯΈΑ͏ʂ
   w 'J[[#V[[ͱ͸ɺҎ্ͷ੔਺ྻʹରͯ͠
   w ͷഒ਺͸'J[[
   w ͷഒ਺͸#V[[
   w ͷഒ਺͸'J[[#V[[
   w ͦΕҎ֎͸ࣗ਎ͷ਺
   w Λग़ྗ͢Δ໰୊Ͱ͢
   

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8. -BNCEBࣜ
   w ͍͍ͪͪؔ਺Λ࡞Δ·Ͱ΋ͳ͍ͱ͖ʹ࢖͏ؔ਺Ϧςϥϧ
   w Ϧςϥϧͬͯͷ͸ม਺ʹ୅ೖͰ͖Δ஋ͷࣄͶ
   w ؔ਺ΛҾ਺ʹऔΔؔ਺ʹ࢖͏ͱΑ͛͞
   w ͜͏͍͏ؔ਺Λߴ֊ؔ਺ )JHIFS0SEFS'VODUJPO
   ͬͯݺͿΑ
   

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9. 1ZUIPOͷߴ֊ؔ਺
   w *UFSBCMFͳΦϒδΣΫτΛҰׅͰૢ࡞͢Δؔ਺
   w NBQ GVOD JUFS
   
   w pMUFS GVOD JUFS
   
   w GVODUPPMTSFEVDF GVOD JUFS
   
   w ೚ҙॱͰͷιʔτ
   w TPSUFE JUFS LFZLFZ@GVODUJPO
   
   w άϧʔϓ෼͚
   w JUFSUPPMTHSPVQCZ JUFS LFZLFZ@GVODUJPO
   
   w ͍ͭ͜ΒͷฦΓ஋͸શ෦(FOFSBUPSͳͷͰऔѻ஫ҙ
   w Ҿ਺ͷॱ൪ʹҰ؏ੑ͕ͳ͍ͷ͸ಥͬࠐΜͰ͸͍͚ͳ͍
   

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10. ࢖ͬͯΈΑ͏
    import urllib.request
    iris_url = 'https://raw.githubusercontent.com/uiuc-cse/data-fa14/gh-pages/data/iris.csv'
    with urllib.request.urlopen(iris_url) as res:
    splitted_response = res.read().split()
    decoded = map(lambda l: l.decode('UTF-8'), splitted_response)
    iris_csv = list(map(lambda l: l.split(','), decoded))
    header = iris_csv[0]
    iris_data = iris_csv[1:]
    iris = map(lambda i: {
    header[4]: i[4],
    header[0]: float(i[0]),
    header[1]: float(i[1]),
    header[2]: float(i[2]),
    header[3]: float(i[3])
    }, iris_data
    )
    for l in sorted(iris, key=lambda i: i['sepal_width']):
    print(l)
    

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11. ࿅श໰୊
    w JSJTQZΛվ଄͠Α͏
    w ଞͷ஋Ͱ΋ιʔτͯ͠ΈΑ͏
    w SFEVDFΛ࢖ͬͯͭͷ஋ TFQBMͱQFUBMͷXJEUIͱMFOHUI
    ͷ

    ฏۉ஋ΛͦΕͧΕٻΊͯΈΑ͏ TVNറΓ
    
    w ࠓ౓͸Ֆͷछྨ͝ͱʹಉ͡ࣄΛ΍ͬͯΈΑ͏ HSPVQCZ
    
    

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