[Zope] coercing to Unicode: need string or buffer, NoneType found

[Peter Bengtsson]

Are you sure that self.getfilepath() is a string?

peterbe at trillian:~ $ python
Python 2.4.3 (#2, Apr 10 2006, 11:53:13)
[GCC 4.0.3 (Ubuntu 4.0.3-1ubuntu4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
 >>> import os
 >>> os.stat(None)
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
TypeError: coercing to Unicode: need string or buffer, NoneType found



Dennis Allison wrote:
> Zoe 2.9.0, Python 2.4.2
> 
> ## Script (Python) "ascript"
> ##bind container=container
> ##bind context=context
> ##bind namespace=
> ##bind script=script
> ##bind subpath=traverse_subpath
> ##parameters=
> ##title=
> ##
> root = container.restrictedTraverse('/')
> objs = root.ZopeFind(container.this(), obj_metatypes=['External Method'], 
> search_sub=1)
> for path, method in objs:
>    method.reloadIfChanged()
>    print method.title, path
> return printed
> 
> ERROR:
> 
> Exception Type  	TypeError
> Exception Value 	coercing to Unicode: need string or buffer, 
> NoneType found
> 
> Traceback (innermost last):
> 
>     * Module ZPublisher.Publish, line 113, in publish
>     * Module ZPublisher.mapply, line 88, in mapply
>     * Module ZPublisher.Publish, line 40, in call_object
>     * Module Shared.DC.Scripts.Bindings, line 311, in __call__
>     * Module Shared.DC.Scripts.Bindings, line 348, in _bindAndExec
>     * Module Products.PythonScripts.PythonScript, line 323, in _exec
>     * Module None, line 4, in ascript
>       <PythonScript at /draPlay/ascript>
>       Line 4
>     * Module Products.ExternalMethod.ExternalMethod, line 154, in 
> reloadIfChanged
> 
> TypeError: coercing to Unicode: need string or buffer, NoneType found
> 
>>From ExternalMethod.py:
> 
> 152:    def reloadIfChanged(self):
>        # If the file has been modified since last loaded, force a reload.
> ==>    ts=os.stat(self.filepath())[stat.ST_MTIME]
>             if (not hasattr(self, '_v_last_read') or
>             (ts != self._v_last_read)):
>             self._v_f=self.getFunction(1)
>             self._v_last_read=ts
> 
> 
> Any idea what is causing this error.  Looks to me to be a Python Bug.  A 
> bit of Googling shows this error showing up in a number of different 
> contexts.  Any suggestions for a workaround?
> 
> 
> 
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-- 
Peter Bengtsson,
work www.fry-it.com
home www.peterbe.com
hobby www.issuetrackerproduct.com