try to trap errors

1 files changed, 8 insertions, 3 deletions

diff --git a/scan.py b/scan.py
index b53de68..b55526c 100755
--- a/scan.py
+++ b/scan.py
@@ -25,9 +25,14 @@ class Prom:
         for field in fields:
             output = output + "# HELP therm_{0} {0}\n# TYPE therm_{0} gauge\n".format(field)
             for mac in self.collected:
-                output = output + "therm_{0}{{mac=\"{1}\"}} {2:f}\n".format(
-                    field, mac, self.collected[mac][field][0]
-                    )
+                try:
+                    output = output + "therm_{0}{{mac=\"{1}\"}} {2:f}\n".format(
+                        field, mac, self.collected[mac][field][0]
+                        )
+                except E:
+                    output = output + "# therm_{0}{{mac=\"{1}\"}} {2}\n".format(
+                        field, mac, E
+                        )
 
         headers = HttpHeaders()
         headers.set('Content-type', 'text/plain; version=0.0.4; charset=utf-8; escaping=values')