[mod_python] Page fails to show up

Graham Dumpleton graham.dumpleton at gmail.com
Thu Oct 18 18:13:41 EDT 2007

What do you have PythonHandler set to? In other words, are you using
something like mod_python.publisher or your own custom handler? Can
you shrink your code to the minimal required to show the problem and
post it?

Also, have you used apache.log_error() function to log messages at
ever stage in your code to see which path it is taking? In other
words, do some basic debugging rather than assume what is actually
being called and where in the code it gets to.


On 19/10/2007, Michiel Sikma <michiel at thingmajig.org> wrote:
> Hi everyone,
> I'm currently trying to make a sort of front-end for doing certain
> things with my Google Calendar account. I'm using mod_python on my
> own server to do it. This is my first time using it, and I keep
> running into a problem where certain code causes the page to not show
> anything at all.
> For example, at some point I use a method called _PrintOwnCalendars()
> which executes a query and obtains an object with information about
> my calendars. When this method only contains a simple "return
> 'test'" (say, as a test), it does just that. I can then print the
> string that I obtained from the method; it works fine. But when I use
> the actual code (which is "feed = self.cal_client.GetOwnCalendarsFeed
> ()"), and then return an arbitrary string, it doesn't work. As in, it
> simply ceases to do anything. I get a blank page even if I return
> some string that's then printed or try to print messages after that.
> I don't get an error message at all, either. Normally, when doing
> things that raise an exception, it shows the complete debugging info.
> But for some reason mod_python seems to return absolutely nothing in
> some cases.
> I'm sure that the code not working must be because I'm using Google's
> API wrongly or something like that, but I'm wondering how it's
> possible that mod_python shows nothing on the screen instead of
> simply showing debugging info.
> Thanks,
> Michiel
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