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Diffstat (limited to 'gn3')
-rw-r--r--gn3/csvcmp.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/gn3/csvcmp.py b/gn3/csvcmp.py
index 453c97a..ebd323e 100644
--- a/gn3/csvcmp.py
+++ b/gn3/csvcmp.py
@@ -66,7 +66,8 @@ def csv_diff(base_csv, delta_csv, tmp_dir="/tmp"):
                       "--format json"))
     if _r.get("code") == 0:
         _r = json.loads(_r.get("output"))
-        _r["Columns"] = max(base_csv_header, delta_csv_header)
+        if any(_r.values()):
+            _r["Columns"] = max(base_csv_header, delta_csv_header)
     else:
         _r = {}