if value should be float but is not, show 'Non applicable'

bijoe/views.py

@@ -106,7 +106,10 @@ class CubeMixin(object):
             for cell, value in row:
                 if stringify and cell.type is float:
                     # FIXME find how to format decimal number using locale with Django
-                    value = ('%05.2f' % float(value)).replace('.', ',') + u' %'
+                    try:
+                       value = ('%05.2f' % float(value)).replace('.', ',') + u' %'
+                    except:
+                       value = _('Non applicable')
                 if isinstance(value, datetime.timedelta):
                     if stringify:
                         s = ''