Python始めて半年で感じたこと/I’ve recently started to learn Python.

1. Justfreeslide.com 1 Python࢝Ίͯ൒೥Ͱײͨ͜͡ͱ ɾ࢝Ί͖͔͚ͨͬ ɾ͜͜·Ͱͷֶशํ๏ ɾAltair৮ͬͯΈ·ͨ͠ ɾ·ͱΊ
2. Justfreeslide.com 2 ۽ాɹᠳ(Kumada Sho) ɾ൒ಋମϝʔΧʔΤϯδχΞ ɾژ౎ࡏྺʹ8Χ݄ ɾPythonྺ൒೥ʢ㲈ϓϩάϥϛϯάྺʣ ɾ͸ΜͳΓPythonӡӦϝϯόʔ ɹ4ճ໨ͷࢀՃɺԿ΋΍ͬͯ·ͤΜɻɻ
3. Justfreeslide.com 3 Python࢝Ί͖͔͚ͨͬ झຯͱݴ͑͹ं͕ͩͬͨɺ ͔݁ࠗͯ͠Β࿔Γʹ͘͘ͳͬͨɻɻ ৽ฉͰAIͱ͔IoTͱ͍͏ϫʔυ͕ ग़ͯ͜ͳ͍೔͸ͳ͍ͷͰɺલ͔Β ϓϩάϥϛϯά͸ؾʹͳ͍ͬͯͨɻɻ Pythonͱ͍͏ݴޠͰͰ͖ΔΒ͍͠ɺ ΍ͬͯΈΑ͏ʂ γϟίλϯπϥΠνɺ ECUνϡʔϯɺҾͬுΓλΠϠɺ ग़໘ܭࢉɺϝογϡԽɺϘϯϐϯऔΓ෇͚ Let’s DIY !
4. Justfreeslide.com 4 ࢓ࣄͰ΋࢖͑ͨΒྑ͍ͳʔʢকདྷతʹʣ ޻ఔ͔ΒಘΒΕΔσʔλ PythonͰՄࢹԽ (ΠϯλϥΫςΟϒʹ) ෆྑϞʔυͱͷ૬ؔ ݪҼڀ໌ɺରࡦ·Ͱͷظؒ୹ॖʂ ૣ͘ؼΓ͍ͨɻɻ ෆྑ͕ग़ΔͱݪҼಛఆͷ࡞ۀΛ୹ظؒͰ΍Δඞཁ͕͋Γɺޮ཰Խ͍ͨ͠ʂ ࠓ·Ͱؾ෇ ͔ͳ͔ͬͨ ܏޲
5. Justfreeslide.com 5 ͜͜·Ͱͷֶशํ๏(2018/10ʙ) ɾ؀ڥߏங ɾPythonͷجຊจ๏ ɾGitHubͷ࢖͍ํɹetc. ɹશ͘ͷॳ৺ऀʹ༏͍͠ ࣸܦ2प ʮಠֶϓϩάϥϚʔʯʹ Ωϟϯϖʔϯίʔυ͕ࡌ͍ͬͯͨ ແྉମݧ 3೔ؒ ·ͣ͸ʮಠֶϓϩάϥϚʔʯಡΜͰΈΔ͜ͱʹ
6. Justfreeslide.com 6 ͜͜Β΁ΜͰɺ͸ΜͳΓPython#12ʹࢀՃ ɾPythonͷجૅ ɾExcelγʔτͷऔΓѻ͍ etc. ɹ࡞ۀޮ཰Խʹ࢖͑ͦ͏ͳωλ͋Γ ࣸܦ ్த·Ͱ ɾNumpyɺpandas ɾσʔλϥϯάϦϯά ࣸܦ ్த·Ͱ ʢࠓ͜͜ʣ
7. Justfreeslide.com 7 ͦͷଞ ɾճ౴͕ؼͬͯ͘Δ·Ͱ͕ૣ͍ ɾ਌੾ͳํ͕ଟ͍ άάͬͯᆐ͕໌ ͔ͳ͚Ε͹ ౎౓࣭໰
8. Justfreeslide.com 8 ࣸܦʹ͕͔͔࣌ؒΓա͗Δ͜ͱʹؾ෇͘ɾɾ ࠳ં͢Δ͜ͱؒҧ͍ͳ͠ʂ ͱΓ͋͑ͣɺԿ͔࡞Γ࢝Ίͯɺ٧·ͬͨΒɺ ʮάάΔ → ڭՊॻͰ֬ೝʯͱ͍͏΍Γํʹมߋ
9. Justfreeslide.com 9 ࡞੒͍ͨ͠΋ͷͷΠϝʔδ ɾՄࢹԽΛ༻͍ͨWebΞϓϦ ɾ୊ࡐ͸σΠζχʔϥϯυͷ଴ͪ࣌ؒ ɹ εϥΠμʔͰ೥݄೔࣌Λ߹ΘͤΔͱ աڈͷ଴͕ͪ࣌ؒ෼͔Δ →ۭ͍ͯΔΞτϥΫγϣϯ͔Β㕩Γ͍ͨ datetime
10. Justfreeslide.com 10 σʔλݩ https://touringplans.com/blog/2018/06/25/disney-world-wait-times-available-for-data-science-and-machine-learning/ σΟζχʔϫʔϧυ ͷ଴͕ͪ࣌ؒcsv.ͰೖखՄೳ
11. Justfreeslide.com 11 ՄࢹԽπʔϧʢAltairʣ ɾVega-Lite JSON࢓༷͔Β PythonίʔυΛੜ੒ ɾυΩϡϝϯτ͕ॆ࣮ ɹྫ୊͕๛෋ ɾԼهyoutubeͰͷղઆ͕ ɹΘ͔Γқ͍ Jake VanderPlas - Exploratory Data Visualization with Vega, Vega-Lite, and Altair - PyCon2018 https://www.youtube.com/watch?v=ms29ZPUKxbU
12. Justfreeslide.com 12 औֻ͔ͬΓ΍͍͢ ɹɾσʔλ ɹɾπʔϧ Λ࢖ͬͯɺ୯७ͳάϥϑ͔Β࡞ͬͯΈΔ͜ͱʹ ͱΓ͋͑ͣɺ खΛಈ͔ͤΔ͜ͱ͔Β࢝ΊΔ͜ͱ͕େࣄʂʂ
13. Justfreeslide.com 13 import altair as alt
 import pandas as pd #σʔλΛpandasͰೖΕ·ͨ͠ 
 alt.renderers.enable(‘notebook') #jupyter notebookͰ࣮ߦ͢Δ৔߹ʹඞཁͳढจ
 
 alt.data_transformers.enable(‘default',max_rows=None) 
 #5000ߦҎ্ಡΈࠐΉࡍʹඞཁ ଴ͪ࣌ؒΛ࣌ܥྻʹϓϩοτ͢Δ
14. Justfreeslide.com 14 term_start="2018-07"ɹ #ελʔτ݄ term_end="2018-12"ɹɹ #ऴ݄ྃ
15. Justfreeslide.com 15 sp=alt.Chart(splash_mountain[term_start:term_end], title="Disney World Wait Time 2018(Actual)") .mark_point(filled=True) .encode(
 alt.X("datetime",type="temporal"),ɹɹɹ #࣌ؒσʔλ
 alt.Y("attractions",type="nominal"),ɹɹɹ #໊໨σʔλ
 size="wait_time(actual):Q",ɹɹɹɹɹɹɹ#ྔతσʔλ
 color=“wait_time(actual):Q") #ྔతσʔλ .properties(width=650,height=400) େผ͢ΔͱɺᶃChart , ᶄmark , ᶅencode ,ᶆpropertiesɹ ͔Β੒͍ͬͯͯͦΕͧΕʹಛ௃ʢϚʔΫछྨɺX࣠ɺY࣠ɺσʔλछྨͳͲʣ ΛೖΕΔ
16. Justfreeslide.com 16 sp
17. Justfreeslide.com 17 sp+se+di+ex+fl+ki+pi+ro+so+sp2+to+al+na “ʴ”Ͱ1ͭͷάϥϑʹϚʔδ͞ΕΔ
18. Justfreeslide.com 18 ࣌ܥྻͷ଴ͪ࣌ؒάϥϑΛ࡞Δ εϥΠμʔͰಈ͔͢ Ϛοϓ্ʹϓϩοτ͢Δ WebʹΞοϓ͢Δ σʔλ͕ߋ৽͞ΕͨΒࣗಈͰಡΈࠐΉΑ͏ʹ Ͱ͖Δ͔෼͔Βͳ͍͚Ͳɺ͠͹Β֨͘ಆ͠·͢ ଟ෼৭ʑଥڠ͠·͢w
19. Justfreeslide.com 19 ·ͱΊʢ͜͜·Ͱ΍ͬͯΈͯͷॴײʣ ɹ࠷௿ݶͷࣸܦΛͨ͠Βɺ ɹͱΓ͋͑ͣԿ͔࡞Γ࢝ΊΔʂ ɹ্ख͍͔͘ͳͯ͘΋ಘΔ΋ͷ͸͋Δͷ ɹͰؾָʹʢ݁ߏେࣄʣ ɹษڧձʹࢀՃͯ͠ϞνϕʔγϣϯUPʂ