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copied!<p>I'm currently using <a href="http://webpy.org/cookbook/templates_on_gae" rel="nofollow noreferrer">webpy</a> that has the same limitation, its templating system can't access parser module (blocked) and can't write to filesystem on Google App Engine, so you need to precompile the templates upfront. </p> <p>I have resolved this annoying issue with a Python script that, everytime a file of a given directory is changed, triggers the precompilation of that file.</p> <p>I'm on OSX and I'm using <a href="http://en.wikipedia.org/wiki/FSEvents" rel="nofollow noreferrer">FSEvents</a> but I believe you can find other solutions/libraries on any other platform (<a href="http://inotify.aiken.cz/?section=incron&page=about&lang=en" rel="nofollow noreferrer">incron</a> in Linux, <a href="https://stackoverflow.com/questions/760904/how-can-i-monitor-a-windows-directory-for-changes">FileSystemWatcher</a> on Windows):</p> <pre><code>from fsevents import Observer from fsevents import Stream from datetime import datetime import subprocess import os import time PROJECT_PATH = '/Users/.../Project/GoogleAppEngine/stackprinter/' TEMPLATE_COMPILE_PATH = os.path.join(PROJECT_PATH,'web','template.py') VIEWS_PATH = os.path.join(PROJECT_PATH,'app','views') def callback(event): if event.name.endswith('.html'): subprocess.Popen('python2.5 %s %s %s' % ( TEMPLATE_COMPILE_PATH ,'--compile', VIEWS_PATH) , shell=True) print '%s - %s compiled!' % (datetime.now(), event.name.split('/')[-1]) observer = Observer() observer.start() stream = Stream(callback, VIEWS_PATH, file_events=True) observer.schedule(stream) while not observer.isAlive(): time.sleep(0.1) </code></pre>

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