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PERFORMANCE
PYTHONICA
U M A B R E V E C O M PA R A Ç Ã O Q U E S E M P R E T E M I F A Z E R …
- Adorador do Grande Cthulhu
- Whovian
- Trekker
- Curioso
- Enxadrista
- Metaleiro
- Rato de biblioteca
- Desenvolvedor Python Sênior
-CraveFood Systems-
Danilo “Mawkee" Martins
@mawkee
Quem sou eu:
““Oitenta porcento do sucesso
é aparecer (e comer guacamole)”
Woody Allen (ou quase)
Caipyra 2017
PERFORMANCE
PYTHONICA
( A g o r a v a i … p r o m e t o ! )
O QUE É
PERFORMANCE?
Realtime
Requisições / segundo
Menor utilização de recursos
Para nossos propósitos, vamos
considerar como medida de
performance apenas o tempo de
resposta.
O QUE É SER
PYTHONICO?
PEP8
“Falar” em idioma Python
Legibilidade é importante
Cada linguagem de programação tem
seu “idioma” próprio. Normalmente,
estes idiomas não são uma boa ideia em
outras linguagens.
PEP20
““As pessoas que acham que sabem tudo são
muito irritantes para nós que sabemos.”
Isaac Asimov
IN vs FIND
1.000.000 (um milhão) de iterações
Código P: 2,93s
Código NP: 4,61s
SLICING vs STARTSWITH
10.000.000 (dez milhões) de iterações
Código P: 2,91s
Código NP: 2,50s
FOR vs LIST COMPREHENSIONS
100.000 (cem mil) iterações
Código P: 7,97s
Código NP: 12,33s
ITERANDO EM UMA COLEÇÃO
10.000.000 (dez milhões) de iterações
Código P: 7,10s
Código NP: 14,21s
ITERANDO EM UMA COLEÇÃO, BONUS
10.000.000 (dez milhões) de iterações
Código P: 10,48s
Código NP: 14,32s
CONCATENAR STRINGS vs JOIN
10.000.000 (dez milhões) de iterações
Código P: 6,93s
Código NP: 4,26s
CONCATENAR STRINGS vs FORMAT
10.000.000 (dez milhões) de iterações
Código P: 4,52s
Código NP: 2,68s
““Esta será a única parte desta apresentação
que você se lembrará no futuro.”
Mawkee
Palestras de Jeff Knupp
Palestras de Raymond Hettinger
Palestras e livros de Luciano Ramalho
REFERÊNCIAS
Ou: onde aprender a escrever código pythonico
Danilo Martins <mawkee@gmail.com>
Twitter: @mawkee
Telegram: @mawkee
-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GCS/CM/CC/IT/L/M/MU d-(+) s: !a C++++ UBL++++$ P+ L+++(++++)>+++++ E+ W+++ !N !o K- !w-- !O++
M++ !V PS++ PE- Y+ PGP++ t++ 5++ !X R+++ tv-- b+++ DI+++ D+++ G++ e h r+++ y+++
------END GEEK CODE BLOCK------
Perguntas?
Obrigado!

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PERFORMANCE PYTHONICA: UMA BREVE COMPARAÇÃO

  • 1. PERFORMANCE PYTHONICA U M A B R E V E C O M PA R A Ç Ã O Q U E S E M P R E T E M I F A Z E R …
  • 2.
  • 3. - Adorador do Grande Cthulhu - Whovian - Trekker - Curioso - Enxadrista - Metaleiro - Rato de biblioteca - Desenvolvedor Python Sênior -CraveFood Systems- Danilo “Mawkee" Martins @mawkee Quem sou eu:
  • 4. ““Oitenta porcento do sucesso é aparecer (e comer guacamole)” Woody Allen (ou quase)
  • 6. PERFORMANCE PYTHONICA ( A g o r a v a i … p r o m e t o ! )
  • 7. O QUE É PERFORMANCE? Realtime Requisições / segundo Menor utilização de recursos Para nossos propósitos, vamos considerar como medida de performance apenas o tempo de resposta.
  • 8. O QUE É SER PYTHONICO? PEP8 “Falar” em idioma Python Legibilidade é importante Cada linguagem de programação tem seu “idioma” próprio. Normalmente, estes idiomas não são uma boa ideia em outras linguagens. PEP20
  • 9. ““As pessoas que acham que sabem tudo são muito irritantes para nós que sabemos.” Isaac Asimov
  • 10. IN vs FIND 1.000.000 (um milhão) de iterações Código P: 2,93s Código NP: 4,61s
  • 11. SLICING vs STARTSWITH 10.000.000 (dez milhões) de iterações Código P: 2,91s Código NP: 2,50s
  • 12. FOR vs LIST COMPREHENSIONS 100.000 (cem mil) iterações Código P: 7,97s Código NP: 12,33s
  • 13. ITERANDO EM UMA COLEÇÃO 10.000.000 (dez milhões) de iterações Código P: 7,10s Código NP: 14,21s
  • 14. ITERANDO EM UMA COLEÇÃO, BONUS 10.000.000 (dez milhões) de iterações Código P: 10,48s Código NP: 14,32s
  • 15. CONCATENAR STRINGS vs JOIN 10.000.000 (dez milhões) de iterações Código P: 6,93s Código NP: 4,26s
  • 16. CONCATENAR STRINGS vs FORMAT 10.000.000 (dez milhões) de iterações Código P: 4,52s Código NP: 2,68s
  • 17. ““Esta será a única parte desta apresentação que você se lembrará no futuro.” Mawkee
  • 18. Palestras de Jeff Knupp Palestras de Raymond Hettinger Palestras e livros de Luciano Ramalho REFERÊNCIAS Ou: onde aprender a escrever código pythonico
  • 19. Danilo Martins <mawkee@gmail.com> Twitter: @mawkee Telegram: @mawkee -----BEGIN GEEK CODE BLOCK----- Version: 3.12 GCS/CM/CC/IT/L/M/MU d-(+) s: !a C++++ UBL++++$ P+ L+++(++++)>+++++ E+ W+++ !N !o K- !w-- !O++ M++ !V PS++ PE- Y+ PGP++ t++ 5++ !X R+++ tv-- b+++ DI+++ D+++ G++ e h r+++ y+++ ------END GEEK CODE BLOCK------ Perguntas? Obrigado!