Don't crash when no records are found

1 files changed, 14 insertions, 11 deletions

diff --git a/fracture/__main__.py b/fracture/__main__.py
index 90f2dd3..a4be0b9 100644
--- a/fracture/__main__.py
+++ b/fracture/__main__.py
@@ -125,17 +125,20 @@ def summarize(xlsx=False, year=None, quarter=None):
     rows     = sorted((map(lambda x: x.to_row(), invoices)),
                  key=lambda x: x["type"])
 
-    keys = list(rows[0].keys())
-    # FIXME all rows don't match and I'm putting them together in weird orders
-    for r in rows:
-        for k in r.keys():
-            if k not in keys:
-                keys.append(k)
-    import sys
-    wrtr = DictWriter(sys.stdout, keys)
-    wrtr.writeheader()
-    for r in rows:
-        wrtr.writerow(r)
+    if len(rows) > 0:
+        keys = list(rows[0].keys())
+        # FIXME all rows don't match and I'm putting them together in weird orders
+        for r in rows:
+            for k in r.keys():
+                if k not in keys:
+                    keys.append(k)
+        import sys
+        wrtr = DictWriter(sys.stdout, keys)
+        wrtr.writeheader()
+        for r in rows:
+            wrtr.writerow(r)
+    else:
+        print("No data available for this period")
 
 @command
 def render(id, template=None, type=None, list_templates=None):