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Rémi Delon

CherryPy: Dynamic websites with Python. http://www.cherrypy.org. Rémi Delon. remi@cherrypy.org. What is CherryPy ?. Pure Python (no C) tool for developing dynamic websites Works with python 2.1, 2.2, 2.3, Jython Runs everywhere python runs (Linux, Windows, …) Works like a compiler:

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Rémi Delon

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  1. CherryPy: Dynamic websites with Python http://www.cherrypy.org Rémi Delon remi@cherrypy.org

  2. What is CherryPy ? • Pure Python (no C) tool for developing dynamic websites • Works with python 2.1, 2.2, 2.3, Jython • Runs everywhere python runs (Linux, Windows, …) • Works like a compiler: • Source files (.cpy) -> Single executable (.py) • Source files use : • python + a few extra keywords + templating language

  3. Sample source file Root.cpy CherryClass Root: view: def index(self): return “”” <html><body> Hello, world </html></body> “”” [remi@boa] cherrypy.py Root.cpy [remi@boa] python RootServer.py [….] Serving HTTP on socket port: 8000 Browser -> http://localhost:8000

  4. CherryClass Root: mask: def index(self): <html><body> Hello, world </html></body>

  5. CherryClass Root: mask: def index(self): <html><body> <py-exec=“a=2”> <py-for=“i,j in [(0,0),(1,0),(2,2)]”> Sum: <py-eval=“i+j+a”><br> </py-for> <py-code=“ import smtplib if 0==0: b=2 “> </html></body>

  6. Sample source file for a dynamic site (also using OOP) import time CherryClass Design: mask: def header(self): <html><body> def footer(self): </body></html> CherryClass Root(Design): function: def getTime(self): return time.strftime('%H:%M:%S') mask: def index(self, myName=“world”): <py-eval=“self.header()”> Hello, <py-eval=“myName”><br> The time is: <py-eval=“self.getTime()”> <form action=“index”> Enter your name: <input type=text name=myName> <input type=submit> </form> <py-eval=“self.footer()”>

  7. Key properties of CherryPy • Everything we love about Python is still there: • Clean syntax • Powerful constructs. ex: for i,j in [(0,0),(1,2)] • OOP • Standard library • … • No unneeded extra code in the source files • Very fast (thanks to compiler approach) • Easy to deploy (just one file) + all the features you would expect from a serious application server: • Database connectivity • Can be run behind another webserver (Apache, …) • Load-balancing • Cacheing, Sessions, Http and cookie-based authentication, Form handling • XML-RPC • HTTP server supports SSL, threading, forking, process pooling, … • Good documentation + can be used as an XML/XSL framework if you want

  8. Questions ? http://www.cherrypy.org remi@cherrypy.org

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