Add some error handling, reporting missing arguments.

This partly addresses issue okfn#14.
petterreinholdtsen · Dec 30, 2015 · 203ba30 · 203ba30
1 parent a2c8392
commit 203ba30
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/pd/pdcalc.py b/pd/pdcalc.py
@@ -50,6 +50,9 @@
       print ", ".join(itms)
 
   else:
+    if not args.instance:
+      print "error: No -i argument provided, did you forget to specify input file?"
+      sys.exit(1)
 
     if args.instance.startswith("http"):
       args.mode = "url"
@@ -79,6 +82,9 @@
       else:
         a.query(args.query)
       print a.get_result()
+    else:
+      print "error: unable to process input, as some data files are missing"
+      sys.exit(1)
 
     if args.mode == "url":
       os.remove(args.instance)