Hi, I have the following python Class in MyTest module: import DocumentTemplate class Test: index_html = DocumentTemplate.HTMLFile('test_form.dtml') def __init__(self): ... ... def mymethod(self): return 'Hello' In my DoTest.py module i have: import MyTest t=MyTest.Test() If I run: python /usr/local/zope/lib/python/ZPublisher/Test.py DoTest t i get the correct output (a html file with http header). but if I try: python /usr/local/zope/lib/python/ZPublisher/Test.py DoTest t/mythod i get the following error message: *************************** Status: 404 Not Found ... <H2>Zope Error</H2> <P>Zope has encountered an error while publishing this resource. </P> <P><STRONG>Resource not found</STRONG></P> Sorry, the requested Zope resource does not exist.<p>Check the URL and try again.<p> <!-- http://127.0.0.1/poll_test/t/mymethod --> ... ************************** I really don't know what is my mistake. I'm pretty sure that mymethod is a method of the Test class. I can also access to the variable index_html of the Test class, so why am I unable to access Test instance methods this way? Actually, I also tried the example in the Zen HowTo: The (old) Product API Tutorial. Is there now another way to call a python class instance method with the debugger?