Fix registry check problem and masked value format warning

lsmtool/tableio.py

@@ -24,6 +24,7 @@ from astropy.coordinates import Angle
 from astropy.io import registry
 import astropy.io.ascii as ascii
 import numpy as np
+import numpy.ma as ma
 import re
 import logging
 import os
@@ -255,6 +256,9 @@ def createTable(outlines, metaDict, colNames, colDefaults):
     table.add_column(DecCol, index=DecIndx)
 
     def fluxformat(val):
+        if type(val) is ma.core.MaskedConstant:
+            return '{}'.format(val)
+        else:
             return '{0:0.3f}'.format(val)
     table.columns['I'].format = fluxformat
 
@@ -538,6 +542,7 @@ def skyModelIdentify(origin, *args, **kwargs):
     Identifies valid makesourcedb sky model files.
     """
     # Search for a format line. If found, assume file is valid
+    try:
         if isinstance(args[0], basestring):
             f = open(args[0])
         elif isinstance(args[0], file_types):
@@ -548,6 +553,8 @@ def skyModelIdentify(origin, *args, **kwargs):
             if line.startswith("FORMAT") or line.startswith("format"):
                 return True
         return False
+    except UnicodeDecodeError:
+        return False
 
 
 def skyModelWriter(table, fileName):