Django Carrots - Speaker Deck

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Learn Python The Hard Way

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•Instalacja Pythona i pierwsze kroki •Wprowadzenie do Pythona •Rysowanie choinek! •Wprowadzenie do Djan o •Inte racja z Facebookiem •Wdrożenie serwisu na Me iTeam

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virtualenv ipython

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Choinka z wiazdek Choinka z kresek Podstawy Djan o Modele i ORM Widoki i wzorce URL Obsłu a formularzy Inte racja z Facebookiem Wdrożenie na Me iTeam

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Instalacja Pythona Listy i pętle Deﬁniowanie funkcji Obiekty i klasy Modele Djan o i ORM Importowanie modułów Wzorce URL Szablony HTML

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Windows Linux OS X

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OS X

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libedit

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Just install XCode

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export LANG="en_US.UTF-8" export LC_COLLATE="en_US.UTF-8" export LC_CTYPE="en_US.UTF-8" export LC_MESSAGES="en_US.UTF-8" export LC_MONETARY="en_US.UTF-8" export LC_NUMERIC="en_US.UTF-8" export LC_TIME="en_US.UTF-8" export LC_ALL=

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Pliki ⌘S

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Pliki

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I � Unicode

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>>> u"Łabędź" u'\u0141ab\u0119d\u017a' >>> print u"Łabędź" Łabędź

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# -*- coding: utf-8 -*-

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x = 1 if x > 0: print "x =", x print "x > 0" $ cat cond.py $ python cond.py File "test.py", line 4 print "x > 0" ^ IndentationError: unexpected indent

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x = 1 if x > 0: ɾɾɾɾprint "x =", x ‣ print "x > 0"

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x = 1 if x > 0: ɾɾɾɾprint "x =", x ‣ print "x > 0" Problem?

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x = 1 if x > 0 print "x =", x print "x > 0" $ cat cond.py $ python cond.py File "test.py", line 2 if x > 0 ^ SyntaxError: invalid syntax

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Funkcje i pętle

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for i in range(n): for j in range(n): print "*" * j * ** * ** *** * ** *** **** * ** *** ****

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for i in range(n): for j in range(i): print "*" * j * ** * ** *** * ** *** **** * ** *** ****

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for i in range(n): for j in range(i): print "*" * j def triangle(k): for j in range(k): print "*" * j for i in range(n): triangle(i) * ** * ** *** * ** *** **** * ** *** ****

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* /|\ /_|_\ /|\ / | \ /__|__\ /|\ / | \ / | \ /___|___\ |

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Instalacja Pythona Listy i pętle Deﬁniowanie funkcji Obiekty i klasy Modele Djan o i ORM Importowanie modułów Wzorce URL Szablony HTML

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$ tree . . ├── carrots │ ├── __init__.py │ ├── settings.py │ ├── urls.py │ ├── wsgi.py ├── carrots.db ├── manage.py └── polls ├── __init__.py ├── models.py ├── tests.py └── views.py 2 directories, 14 files from polls.models import Poll from django.template import \ Context, Loader from django.http import \ HttpResponse from django.core.urlresolvers \ import reverse

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urlpatterns = patterns('', url(r'^polls/$', 'polls.views.index'), url(r'^polls/(?P\d+)/$', 'polls.views.detail'), url(r'^polls/(?P\d+)/results/$', 'polls.views.results'), url(r'^polls/(?P\d+)/vote/$', 'polls.views.vote'), url(r'^admin/', include(admin.site.urls)), )

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Jeśli nie Python, to co?

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Assembly Python C Java Lisp Scheme Smalltalk Ruby PHP JavaScript

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Python Assembly Lisp Scheme Smalltalk Java C JavaScript PHP Ruby

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28% 19% 18,9% 8,9% 8,2% 4% 3,1% 2,4% 0,7% 0,7% Python C++ C Java Perl Ruby JavaScript C# Erlan Haskell

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Python or Ruby?: 6 Months on Hacker News http://peak5390.wordpress.com/2012/12/14/python-or-ruby-6-months-on-hacker-news/

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Python PHP Smalltalk Assembly Lisp Scheme C Java JavaScript Ruby

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Co dalej?

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˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒

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˒ ˒ ˒ ˒ ˒ ˑ

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☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺

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Python HTML/CSS Wordpress Desi n JavaScript Java Android Robotyka Blo er Flask

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˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒ ˒

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— Unicode (od wersji 3.0)

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for i in range(n): for j in range(i): print "*" * j

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for i in range(n): print i for j in range(i): print i, j print "*" * j

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import pdb pdb.set_trace() for i in range(n): for j in range(i): print "*" * j

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LEARNABLE PROGRAMMING Bret Victor Learnable Pro rammin http://worrydream.com/LeanablePro rammin /

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Problem? Opportunity!

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•Przyjazne komunikaty o błędach •Paczka z readline dla OS X •Wizualny debu er

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•Przyjazne ustawienia domyślne •Podpowiadanie importów •Prostsze urlpatterns

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Geek Girls Carrots http:// eek irlscarrots.pl [email protected]