[mod_python] Debugging mod_python errors - publisher.py

Hi all,

I am using mod_python for developing web applications and here is one
strange error that is occuring that I couldn't debug.

<snip>
Mod_python error: "PythonHandler mod_python.publisher"

Traceback (most recent call last):

  File "/usr/lib/python2.4/site-packages/mod_python/apache.py", line
299, in HandlerDispatch
    result = object(req)

  File "/usr/lib/python2.4/site-packages/mod_python/publisher.py",
line 213, in handler
    published = publish_object(req, object)

  File "/usr/lib/python2.4/site-packages/mod_python/publisher.py",
line 412, in publish_object
    return publish_object(req,util.apply_fs_data(object, req.form, req=req))

  File "/usr/lib/python2.4/site-packages/mod_python/publisher.py",
line 453, in publish_object
    result = str(object)

  File "", line 215, in respond

TypeError: a float is required

</snip>
This is my mod_python version detail:
<snip>
Package: libapache2-mod-python
Status: install ok installed
Priority: optional
Section: python
Installed-Size: 540
Maintainer: Debian Python Modules Team
<python-modules-team at lists.alioth.debian.org>
Architecture: i386
Version: 3.3.1-7
Replaces: libapache2-mod-python2.3 (<< 3.2.8-3),
libapache2-mod-python2.4 (<< 3.2.8-3)
Provides: libapache2-mod-python2.5
Depends: debconf (>= 0.5) | debconf-2.0, python (<< 2.6), python (>=
2.5), python-central (>= 0.6.7), libc6 (>= 2.7-1), python2.5 (>= 2.5),
apache2.2-common, apache2
Suggests: libapache2-mod-python-doc
Conflicts: libapache-mod-python, libapache-mod-python2.1,
libapache-mod-python2.2, libapache-mod-python2.3,
libapache2-mod-python2.2, libapache2-mod-python2.3,
libapache2-mod-python2.4
Conffiles:
 /etc/apache2/mods-available/python.load 0ce662d08e252896b88072b3476013f4
Description: Python-embedding module for Apache 2
 The mod_python module supports web applications written in Python.
 Because the parser is embedded in the server as an Apache module, it
 will run much faster than traditional CGI.
 .
 This package is built for the current Python version.
Homepage: http://www.modpython.org/
Python-Version: 2.5

</snip>

I am using Cheetah templating and all I am doing is trying to pass
dictionaries of dictionaries to the template. Any insights into when
and why this error would occur will be really helpful.

Thanks in advance.

Regards,
Guruprasad