Trap failure in summary_stats.

Author: alejandrobodas

driver/compare_to_kgo.py

@@ -181,8 +181,14 @@ def print_stats_table(summary_stats, print_all=False, stats_file=None):
     for vname in vlst:
         kgo = read_var(args.kgo_file, vname) # KGO
         tst = read_var(args.tst_file, vname) # test
-        summary_stats[vname] = calculate_stats(tst, kgo, 
-                                               atol=args.atol, rtol=args.rtol)
+        try:
+            summary_stats[vname] = calculate_stats(tst, kgo, 
+                                                atol=args.atol, rtol=args.rtol)
+        except:
+            summary_stats[vname].pop()
+            print(red_colour + "===== ERROR: could not compare variable "
+                  + vname + std_colour)
+            errored = True
         if summary_stats[vname]['N'] > 0: errored = True
 
     # Print summary stats