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POWhy are CherryPy object attributes persistent between requests?
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copied!<p>I was writing debugging methods for my CherryPy application. The code in question was (very) basically equivalent to this:</p> <pre><code>import cherrypy class Page: def index(self): try: self.body += 'okay' except AttributeError: self.body = 'okay' return self.body index.exposed = True cherrypy.quickstart(Page(), config='root.conf') </code></pre> <p>I was surprised to notice that from request to request, the output of self.body grew. When I visited the page from one client, and then from another concurrently-open client, and then refreshed the browsers for both, the output was an ever-increasing string of "okay"s. In my debugging method, I was also recording user-specific information (i.e. session data) and that, too, showed up in both users' output.</p> <p>I'm assuming that's because the python module is loaded into working memory instead of being re-run for every request.</p> <p>My question is this: How does that work? How is it that self.debug is preserved from request to request, but cherrypy.session and cherrypy.response aren't?</p> <p>And is there any way to set an object attribute that will only be used for the current request? I know I can overwrite self.body per every request, but it seems a little ad-hoc. Is there a standard or built-in way of doing it in CherryPy?</p> <p>(second question moved to <a href="https://stackoverflow.com/questions/3908577/can-i-use-cherrypy-object-attributes-to-cache-the-output-of-a-page">How does CherryPy caching work?</a>)</p>

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