HomePython Page 2 - CherryPy: Object-Oriented Web Development
A Simple Script - Python
Python users who engage in web development may appreciate some CherryPy. It is an object-oriented web development framework that allows you to develop web applications easily. It can run on its own server, or behind Apache. Keep reading to learn more.
Name it development.conf. Most of it is pretty simple to understand. Under the “global” section, the server.socketPort variable controls which port your application will use. The server.environment variable can be set to either “development” or “production.” The former value will display tracebacks when an error is encountered, along with some very basic statistics at the bottom of each page. The latter value saves tracebacks, but it does not output them to the user's browser. Obviously, it doesn't append any statistics, either. We'll use the “development” option to mess around with, but when you expose your applications to the real world, you should always use the “production” option. The last variable we define, server.threadPool, simply tells CherryPy how many threads to spawn.
Now, we're ready to create a script. To do this, we simply create a class, and we set an instance of that class as CherryPy's root object. We then load the configuration file and start up CherryPy. Create a file called first.py to do this:
def index ( self ): return "Hey." index.exposed = True
The index method is called. Notice that we set exposed to True. This makes the method publicly accessible. You will also notice some basic information at the bottom of this page. It looks quite ugly, but once “development” is changed to “production,” the information will go away. To check the traceback generated by the “development” option, simply throw an error:
def index ( self ): raise TypeError index.exposed = True