quick bug fix

1bd2cb4f · Lyla Fischer · f0108757 · 1bd2cb4f
Commit 1bd2cb4f authored Oct 11, 2012 by Lyla Fischer
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common/lib/capa/capa/responsetypes.py
+1 -1

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--- a/common/lib/capa/capa/responsetypes.py
+++ b/common/lib/capa/capa/responsetypes.py
@@ -710,7 +710,7 @@ class NumericalResponse(LoncapaResponse):
                                           id=xml.get('id'))[0]
            self.tolerance = contextualize_text(self.tolerance_xml, context)
        except Exception:
-            self.tolerance = 0
+            self.tolerance = '0'
        try:
            self.answer_id = xml.xpath('//*[@id=$id]//textline/@id',
                                       id=xml.get('id'))[0]