From 648675425ecaf3d2ba4ed76ef274a0124feafb2e Mon Sep 17 00:00:00 2001
From: Marcel Nijenhof <marceln@pion.xs4all.nl>
Date: Mon, 16 Mar 2020 12:40:58 +0100
Subject: [PATCH] Fix issue 8: Aspect set matroos is nu een lege dict

---
 ddapioper.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/ddapioper.py b/ddapioper.py
index 617ab6a..253c960 100644
--- a/ddapioper.py
+++ b/ddapioper.py
@@ -233,9 +233,14 @@ Returns the results part of the response.
     def aspectSet(self):
         """aspectSet()
 
-Returns the metadata of the aspectSet
+Returns the metadata of the aspectSet.
+
+Note: Return a empty dict if there is no aspectset (matroos)
 """
-        return(self.result()["observationType"]["aspectSet"]["aspects"])
+        observationType = self.result().get("observationType", {})
+        aspectSet       = observationType.get("aspectSet", {})
+        aspects         = aspectSet.get("aspects", {})
+        return(aspects)
 
     def location(self):
         """location()