Python for Everyday

Python Charity Talks in Japan 2021.09 Lightning Talk

Transcript

1. ೔ৗੜ׆Ͱ࢖͏ Python
   Python for Everyday
   Hayao Suzuki
   Python Charity Talks in Japan 2021.09
   September 11, 2021
   

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2. Who am I ?
   ͓લ୭Α
   ໊લ Hayao Suzukiʢླ໦ɹॣʣ
   Twitter @CardinalXaro
   ࢓ࣄ Software Developer @ BeProud Inc.
   › גࣜձࣾϏʔϓϥ΢υ
   › IT ษڧձࢧԉαʔϏε connpass
   › ΦϯϥΠϯֶशαʔϏε PyQ
   › γεςϜ։ൃͷͨΊͷυΩϡϝϯταʔϏε Tracery
   2 / 13
   

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3. Who am I ?
   ؂༁ɾࠪಡٕͨ͠ज़ॻʢൈਮʣ
   › ೖ໳ Python 3 ୈ 2 ൛ (O’Reilly Japan)
   › Effective Python ୈ 2 ൛ (O’Reilly Japan)
   › ػցֶशʹΑΔ࣮༻ΞϓϦέʔγϣϯߏங (O’Reilly Japan)
   › PyTorch ͱ fastai Ͱ͸͡ΊΔσΟʔϓϥʔχϯά (O’Reilly Japan)
   › ࣮ફ ࣌ܥྻղੳ (O’Reilly Japan) New!
   https://xaro.hatenablog.jp/ ʹϦετ͕͋Γ·͢ɻ
   3 / 13
   

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4. Who am I ?
   ൃදϦετʢൈਮʣ
   › ϨΨγʔ Django ΞϓϦέʔγϣϯͷݱ୅Խ (DjangoCongress JP 2018)
   › SymPy ʹΑΔ਺ࣜॲཧ (PyCon JP 2018)
   › Python ͱָ͠Ήॳ౳੔਺࿦ (PyCon mini Hiroshima 2019)
   › ܅͸ cmath Λ஌͍ͬͯΔ͔ (PyCon mini Shizuoka 2020)
   › ΠϯϝϞϦʔετϦʔϜ׆༻ज़ (PyCon JP 2020)
   https://xaro.hatenablog.jp/ ʹϦετ͕͋Γ·͢ɻ
   4 / 13
   

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5. ࠓ೔ͷςʔϚ
   ೔ৗੜ׆Ͱ࢖͏ Python
   › Python ͷ׆༂৔ॴ͸࢓ࣄ͚ͩͰ͸ͳ͍ʂ
   › ೔ৗੜ׆Ͱ໾ʹཱͭ Python ඪ४ύοέʔδΛ঺հ͠·͢ɻ
   5 / 13
   

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6. ࠓ೔ͷςʔϚ
   ೔ৗੜ׆Ͱ࢖͏ Python
   › datetime ύοέʔδ
   › secrets ύοέʔδ
   6 / 13
   

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7. ࣮࿩
   ൃച೔·ͰͷΧ΢ϯτμ΢ϯ
   ʰೖ໳ Python 3 ୈ 2 ൛ʱ͕ 2021 ೥ 3 ݄ 22 ೔ʹൃߦ͞ΕΔ͕ɺ͋ͱԿ೔ͩΖ
   ͏͔ɻ
   7 / 13
   

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8. ೔෇ܭࢉ
   datetime ύοέʔδͰ೔෇ܭࢉ
   >>> import datetime
   >>> xday = datetime.date(2021, 3, 22)
   >>> today = datetime.date(2021, 9, 11)
   >>> f"຋༁ຊ͕ൃߦ͞Ε͔ͯΒ{(today - xday).days}೔ܦա"
   ' ຋༁ຊ͕ൃߦ͞Ε͔ͯΒ 173 ೔ܦա'
   େࣄͳه೦೔ܭࢉʹͥͻ datetime ύοέʔδΛ࢖͓͏ʂ
   8 / 13
   

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9. ࣮࿩
   ύεϫʔυΛϥϯμϜʹੜ੒͍ͨ͠
   ύεϫʔυΛొ࿥͍͕ͨ͠ɺ࢖͍·Θ͠͸Α͘ͳ͍ɻؾܰʹ࡞Γ͍ͨɻ
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10. ύεϫʔυੜ੒
    secrets ύοέʔδͰύεϫʔυੜ੒
    >>> import secrets
    >>> secrets.token_urlsafe(8) # จࣈ਺੍ݶʹԠͯ͡దٓௐ੔
    'rwQ_XUqyrbo'
    େࣄͳύεϫʔυʹͥͻ secrets ύοέʔδΛ࢖͓͏ʂ
    ˞ύεϫʔυϚωʔδϟͷ࠾༻΋ݕ౼͠·͠ΐ͏ɻ
    10 / 13
    

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11. ࣮࿩
    ൿີͷ࣭໰ʹਅ໘໨ʹ౴͑ͨ͘ͳ͍
    मֶཱྀߦͰߦͬͨ৔ॴ͸ʁ ೔ޫʂ ࡳຈʂ
    தֶߍͷमֶཱྀߦ͸ϨΞέʔεͳͷͰݴ͑·ͤΜɻ
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12. ൿີͷ࣭໰
    secrets ύοέʔδͰൿີͷ࣭໰΁ճ౴
    import secrets
    hira = "".join([chr(x) for x in range(ord("͋"), ord("Μ") + 1)])
    kana = "".join([chr(x) for x in range(ord("Ν"), ord("ϲ") + 1)])
    cs = hira + kana
    for _ in range(15):
    print("".join([secrets.choice(cs) for x in range(8)]))
    ൿີͷ࣭໰ʹͥͻ secrets ύοέʔδͰཱͪ޲͔͓͏ʂ
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13. ࠓ೔ͷςʔϚ
    ೔ৗੜ׆Ͱ࢖͏ Python
    › datetime ύοέʔδɿࠣࡉͳ೔࣌ܭࢉʹ
    › secrets ύοέʔδɿ҆શͳύεϫʔυੜ੒ʹ
    13 / 13
    

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