[Zope] Iteration Over Non-sequence

Thu Mar 8 15:36:29 EST 2007

Hi;
I've written this code:

<html>
<body>
<span tal:define="global number here/quotes/randomNumber"></span>
<table><tr><td>
<span metal:use-macro="here/en-us/quotes/?number/macros/quote"></span><br />
</td></tr></table>
</body>
<html>

...and here's randomNumber, which is an External Method:

def randomNumber(self):
   return randrange(1, len(self.objectValues()), 1)

but it throws this error which ends with "Iteration over non-sequence". Well, the folder from which it's supposed to select a quote holds nothing but a sequential number of page templates (named 1, 2, 3...). What am I doing wrong?
TIA,
Tony

Traceback (innermost last):
  Module ZPublisher.Publish, line 101, in publish
  Module ZPublisher.mapply, line 88, in mapply
  Module ZPublisher.Publish, line 39, in call_object
  Module Shared.DC.Scripts.Bindings, line 306, in __call__
  Module Shared.DC.Scripts.Bindings, line 343, in _bindAndExec
  Module Products.PageTemplates.ZopePageTemplate, line 222, in _exec
  Module Products.PageTemplates.PageTemplate, line 96, in pt_render
   - <ZopePageTemplate at /footprints.by2012.com/en-us/Articles/Mine/America_How_It_Ends.pt>
  Module TAL.TALInterpreter, line 190, in __call__
  Module TAL.TALInterpreter, line 234, in interpret
  Module TAL.TALInterpreter, line 671, in do_useMacro
  Module TAL.TALInterpreter, line 234, in interpret
  Module TAL.TALInterpreter, line 702, in do_defineSlot
  Module TAL.TALInterpreter, line 234, in interpret
  Module TAL.TALInterpreter, line 409, in do_optTag_tal
  Module TAL.TALInterpreter, line 394, in do_optTag
  Module TAL.TALInterpreter, line 389, in no_tag
  Module TAL.TALInterpreter, line 234, in interpret
  Module TAL.TALInterpreter, line 671, in do_useMacro
  Module TAL.TALInterpreter, line 234, in interpret
  Module TAL.TALInterpreter, line 671, in do_useMacro
  Module TAL.TALInterpreter, line 234, in interpret
  Module TAL.TALInterpreter, line 409, in do_optTag_tal
  Module TAL.TALInterpreter, line 394, in do_optTag
  Module TAL.TALInterpreter, line 389, in no_tag
  Module TAL.TALInterpreter, line 234, in interpret
  Module TAL.TALInterpreter, line 671, in do_useMacro
  Module TAL.TALInterpreter, line 234, in interpret
  Module TAL.TALInterpreter, line 409, in do_optTag_tal
  Module TAL.TALInterpreter, line 394, in do_optTag
  Module TAL.TALInterpreter, line 389, in no_tag
  Module TAL.TALInterpreter, line 234, in interpret
  Module TAL.TALInterpreter, line 637, in do_condition
  Module TAL.TALInterpreter, line 234, in interpret
  Module TAL.TALInterpreter, line 569, in do_insertStructure_tal
  Module Products.PageTemplates.TALES, line 221, in evaluate
   - URL: /templates/frame_content_1
   - Line 5, Column 0
   - Expression: standard:'here/s/getRandomQuote'
   - Names:
      {'container': <Folder instance at e3eca10>,
       'context': <Folder instance at e3eca10>,
       'default': <Products.PageTemplates.TALES.Default instance at 0x8a4b6cc>,
       'here': <Folder instance at e3eca10>,
       'loop': <SafeMapping instance at a8d3b90>,
       'modules': <Products.PageTemplates.ZRPythonExpr._SecureModuleImporter instance at 0x8a4b06c>,
       'nothing': None,
       'options': {'args': ()},
       'repeat': <SafeMapping instance at a8d3b90>,
       'request': <HTTPRequest, URL=http://footprints.by2012.com/Articles/Mine/America_How_It_Ends.pt>,
       'root': <Application instance at e03c380>,
       'template': <ZopePageTemplate at /footprints.by2012.com/en-us/Articles/Mine/America_How_It_Ends.pt>,
       'traverse_subpath': [],
       'user': Anonymous User}
  Module Products.PageTemplates.Expressions, line 174, in __call__
  Module Products.PageTemplates.Expressions, line 169, in _eval
  Module Products.PageTemplates.Expressions, line 66, in render
  Module Products.PageTemplates.ZRPythonExpr, line 76, in call_with_ns
  Module Shared.DC.Scripts.Bindings, line 320, in __render_with_namespace__
  Module Shared.DC.Scripts.Bindings, line 343, in _bindAndExec
  Module Products.PageTemplates.ZopePageTemplate, line 222, in _exec
  Module Products.PageTemplates.PageTemplate, line 96, in pt_render
   - <ZopePageTemplate at /s/getRandomQuote>
  Module TAL.TALInterpreter, line 190, in __call__
  Module TAL.TALInterpreter, line 234, in interpret
  Module TAL.TALInterpreter, line 657, in do_useMacro
  Module Products.PageTemplates.TALES, line 221, in evaluate
   - URL: /s/getRandomQuote
   - Line 5, Column 0
   - Expression: standard:'here/en-us/quotes/?number/macros/quote'
   - Names:
      {'container': <Folder instance at e37d4d0>,
       'context': <Folder instance at e37d4d0>,
       'default': <Products.PageTemplates.TALES.Default instance at 0x8a4b6cc>,
       'here': <Folder instance at e37d4d0>,
       'loop': <SafeMapping instance at dbf08f0>,
       'modules': <Products.PageTemplates.ZRPythonExpr._SecureModuleImporter instance at 0x8a4b06c>,
       'nothing': None,
       'options': {'args': ()},
       'repeat': <SafeMapping instance at dbf08f0>,
       'request': <HTTPRequest, URL=http://footprints.by2012.com/Articles/Mine/America_How_It_Ends.pt>,
       'root': <Application instance at e03c380>,
       'template': <ZopePageTemplate at /s/getRandomQuote>,
       'traverse_subpath': [],
       'user': Anonymous User}
  Module Products.PageTemplates.Expressions, line 174, in __call__
  Module Products.PageTemplates.Expressions, line 162, in _eval
  Module Products.PageTemplates.Expressions, line 107, in _eval
TypeError: iteration over non-sequence
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