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
2. ࠓ೔ͷ಺༰ w *UFSBCMF
   
   (FOFSBUPS
   w -BNCEBࣜ
3. αϯϓϧίʔυ w IUUQTHJUBSVOFLPOFUBSVOFLPSPVHI@QZUIPO
4. *UFSBCMF w *UFSBCMFͬͯʁ
   w ܁Γฦ͠ॲཧ͕Ͱ͖Δ΋ͷ
   w MJTU
   
   UVQMF
   
   EJDU
   FUD
   w 1ZUIPOʹ͓͍ͯ͸ɺ*UFSBUPSͱ͸ҧ͏Α
   w *UFSBUPS͸JUFS Λ࢖ͬͯ*UFSBCMFͳ΋ͷ͔Βੜ੒ͯ͠
 ஋ΛOFYU ͰݸͣͭऔΓग़͢΍ͭ
   w શ෦ు͖ग़ͨ͠ޙʹOFYU ΛݺͿͱྫ֎Ͱམͪ·͢
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໰୊
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)
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
8. -BNCEBࣜ w ͍͍ͪͪؔ਺Λ࡞Δ·Ͱ΋ͳ͍ͱ͖ʹ࢖͏ؔ਺Ϧςϥϧ
   w Ϧςϥϧͬͯͷ͸ม਺ʹ୅ೖͰ͖Δ஋ͷࣄͶ
   w ؔ਺ΛҾ਺ʹऔΔؔ਺ʹ࢖͏ͱΑ͛͞
   w ͜͏͍͏ؔ਺Λߴ֊ؔ਺ )JHIFS
   0SEFS
   'VODUJPO ͬͯݺͿΑ
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
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)
11. ࿅श໰୊ w JSJTQZΛվ଄͠Α͏
    w ଞͷ஋Ͱ΋ιʔτͯ͠ΈΑ͏
    w SFEVDFΛ࢖ͬͯͭͷ஋ TFQBMͱQFUBMͷXJEUIͱMFOHUI ͷ
 ฏۉ஋ΛͦΕͧΕٻΊͯΈΑ͏ TVNറΓ
    w ࠓ౓͸Ֆͷछྨ͝ͱʹಉ͡ࣄΛ΍ͬͯΈΑ͏ HSPVQCZ