Python Tools for Visual Studio: Python na Microsoftovom .NET-u

Python Python Tools for VS DLR i IronPython Zaklju£ak

Python Tools for Visual Studio
Python na Microsoftovom .NET-u

Nikola Pleji¢

nikola@plejic.com

http://nikola.plejic.com

DevUG Zagreb, 27.10.2011.


Outline

1 Python
Uvod
Kratak vodi£ kroz jezik

2 Python Tools for VS
Instalacija

3 DLR i IronPython
Dynamic Language Runtime
Uporaba IronPythona


Python?

> print(Hello, world!)
Hello, world!


Python?

• op¢eniti, objektno-orijentirani high-level jezik


Python?


• dinami£ki, strongly typed


Python?


• dinami£ki, strongly typed

• fokus na £itljivost i jednostavnost sintakse


The Zen of Python

import this

The Zen of Python, by Tim Peters

Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than *right* now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those!


Kratka povijest

• nastao krajem 1989. godine


Kratka povijest


• Guido van Rossum (BDFL Benevolent Dictator For Life)


Kratka povijest


• Guido van Rossum (BDFL Benevolent Dictator For Life)

• Python 2 vs. Python 3


Implementacije

• referentna implementacija CPython


Implementacije


• Jython, IronPython, PyPy


Implementacije


• Jython, IronPython, PyPy

• raznorazni kompajleri (Pyjamas, Pyrex, Cython)


Osnovni tipovi podataka

• sve je objekt



• sve je objekt

• string vs. unicode

• ne i u IronPythonu (string == unicode)



• sve je objekt



• liste, tuplei



• sve je objekt



• liste, tuplei

• dictionaries


Comprehensions

• list comprehensions


Comprehensions


• dictionary comprehensions


Comprehensions


• dictionary comprehensions

• generatori

• generator comprehensions


Objektni model

• klase


Objektni model

• klase

• klase su objekti


Objektni model

• klase

• klase su objekti

• metaklase

• [...] deeper magic than 99% of users should ever worry about.
If you wonder whether you need them, you don't (the people
who actually need them know with certainty that they need
them, and don't need an explanation about why). ~ Tim
Peters


’to nam treba?

• distribucija Pythona

• standardni interpreter, ActiveState, IronPython, ...

1 http://pytools.codeplex.com/
2 http://ipython.org/
3 MSI na https://github.com/zeromq/pyzmq/downloads


’to nam treba?



• Visual Studio ili besplatni Visual Studio Shell

• ne i VS Express!



’to nam treba?





1
• Python Tools for Visual Studio



’to nam treba?





1
• Python Tools for Visual Studio

2
• IPython

• alternativni (ne-samo-)Python shell
• potreban pyzmq 2.1.4
3



’to dobivamo?

• IntelliSense

4 samo u VS Ultimate :(


’to dobivamo?

• IntelliSense

• project management



’to dobivamo?

• IntelliSense


• debugger



’to dobivamo?

• IntelliSense


• debugger

4
• proling



’to je DLR?

• skup libraryja nad CLR-om koji olak²ava hostanje dinami£kih
jezika


’to je DLR?

jezika

• izvu£en iz ranih verzija IronPythona


’to je DLR?

jezika


• zajedni£ka podloga za sve dinami£ke jezike na .NET-u
(IronRuby, IronScheme)


’to je DLR?

jezika



• pro²irenje postoje¢im stati£kim jezicima (dynamic dispatching
@ C# 4.0)


’to je DLR?

jezika



• pro²irenje postoje¢im stati£kim jezicima (dynamic dispatching
@ C# 4.0)

• .NET Framework 4.0 + Mono 2.8+ po defaultu


Kratka povijest IronPythona

• Jim Hugunin, 2006.




• danas: Microsoft (razvoj na CodePlexu)





• open source (Apache 2.0)





• open source (Apache 2.0)

• aktivno razvijan (zadnji release: 21.10.2011.)


Featurei

• ≈ CPython 2.7 uz manje razlike, npr.:

• string == unicode
• Python podrºava vi²estruko naslježivanje, CLR ne podrºava


Featurei



• integracija s .NET frameworkom


Featurei



• integracija s .NET frameworkom

• Silverlight scripting


Pri£anje s .NET-om

# deklaracija referenci
import clr
clr.AddReference(System.Xml)

# namespacevi
import System
from System.Xml import *
xmldoc = XmlDocument()

# alternativno:
# import system
# xmldoc = System.Xml.XmlDocument()


Pri£anje s .NET-om (smjer #2)

5
• DLR Hosting API (= free scripting!)

5 http://dlr.codeplex.com/wikipage?title=Docs%20and%20specsreferringTitle=Do


Pri£anje s .NET-om (smjer #2)

5
• DLR Hosting API (= free scripting!)

• kompajliranje IronPython aplikacije u .NET assembly

• While the assemblies produced by the IronPython Hosting
APIs are true .NET assemblies, the dynamic nature of the
Python language makes it dicult to use these from other
.NET languages. In short, this means that attempting to
import Python types into other .NET languages such as C# is
not recommended.

5 http://dlr.codeplex.com/wikipage?title=Docs%20and%20specsreferringTitle=Do


ASP.NET i IronPython

• WebForms uz ASP.NET Dynamic Language Support

6 http://github.com/jschementi/ironrubymvc


ASP.NET i IronPython

• WebForms uz ASP.NET Dynamic Language Support

• ASP.NET MVC

• http://www.codevoyeur.com/Articles/Tags/ironpython.aspx
• Rubyja²i su bolje pro²li
6

6 http://github.com/jschementi/ironrubymvc


Alternative

7
• Boo

• sintaksa inspirirana Pythonom
• stati£ki tipiziran (type inferencing)
• makroi

7 http://boo.codehaus.org/
8 http://ironruby.net/
9 http://ironscheme.codeplex.com/


Alternative

7
• Boo

• makroi

8
• IronRuby



Alternative

7
• Boo

• makroi

8
• IronRuby

9
• IronScheme?

• skoro-pa-R6RS Scheme



Zaklju£ak

• ozbiljan, dobro podrºan dinami£ki jezik na CLR-u i Monou


Zaklju£ak


• vrlo solidan toolchain u razvoju


Zaklju£ak


• vrlo solidan toolchain u razvoju

• £emu sve to?

• brzi prototyping
• testiranje .NET assemblyja
• skriptiranje .NET i Silverlight aplikacija


Zaklju£ak

Hvala na paºnji!

Nikola Pleji¢
nikola@plejic.com
http://nikola.plejic.com/

Python Tools for Visual Studio: Python na Microsoftovom .NET-u

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