[Zope] local variable

[D. Rick Anderson]

I've got a python script that sets a variable:

    notes_eo_counter = 0 

And then defines a function:

    def printNotesRow(columns):
        if columns[3][:31] == 'Automatic person update notice':
            print "<tr"
            if (int(notes_eo_counter) % 2):
                print 'bgcolor="#ffffff">'
            else:
                print 'bgcolor="#' + str(session['CRBGColor']) + '">'
                
            print '<td class="bodysmall">' +
str(context.fixDate(columns[0])) + '</td>'
            print '<td class="bodysmall">' + columns[1] + '</td>'
            print '<td class="bodysmall">' + str(columns[3][36:-1]) +
'</td>'
            print '</tr>'
            notes_eo_counter = notes_eo_counter + 1
            return printed


And then calls it:

            newnotesrow = printNotesRow()
            if newnotesrow:
                print newnotesrow

	    return printed

This has worked just fine in several scripts, but in this particular one
I'm gettin an error:

Error Type: UnboundLocalError
Error Value: local variable 'notes_eo_counter' referenced before
assignment


Those lines, although blended with many others, are in that order in the
code. I don't know how I'm getting this error and it's driving me nuts.
The line that the traceback points to is:

            if (int(notes_eo_counter) % 2):



TIA

Rick