Merge pull request #65 from lsst/tickets/DM-15769

Add error exceptions for empty input lists.
lsst-dm · Sep 17, 2018 · f9cb114 · f9cb114
2 parents 7742071 + e3389ed
commit f9cb114
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/python/lsst/pipe/drivers/constructCalibs.py b/python/lsst/pipe/drivers/constructCalibs.py
@@ -111,6 +111,8 @@ def run(self, sensorRefList, expScales=None, finalScale=None, inputName="postISR
         stats = afwMath.StatisticsControl(self.config.clip, self.config.nIter,
                                           afwImage.Mask.getPlaneBitMask(self.config.mask))
         numImages = len(sensorRefList)
+        if numImages < 1:
+            raise RuntimeError("No valid input data")
         if numImages < self.config.stats.maxVisitsToCalcErrorFromInputVariance:
             stats.setCalcErrorFromInputVariance(True)
 
@@ -427,6 +429,9 @@ def runDataRef(self, expRefList, butler, calibId):
         @param butler      Data butler
         @param calibId   Identifier dict for calib
         """
+        if len(expRefList) < 1:
+            raise RuntimeError("No valid input data")
+
         for expRef in expRefList:
             self.addMissingKeys(expRef.dataId, butler, self.config.ccdKeys, 'raw')