From 7cdd7f3a4585117a35735c0b7f46d98581229fad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dion=20H=C3=A4fner?= <dion.haefner@nbi.ku.dk>
Date: Thu, 10 Oct 2019 13:01:40 +0200
Subject: [PATCH] :bug: when skipping files

---
 fowd/cdip.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/fowd/cdip.py b/fowd/cdip.py
index 182c094..c96d293 100644
--- a/fowd/cdip.py
+++ b/fowd/cdip.py
@@ -240,6 +240,13 @@ def handle_result(i, result, pbar):
 
     logger.info('Processing done')
 
+    # remove skipped files
+    wave_records = [subrecord for subrecord in wave_records if subrecord is not None]
+
+    if not wave_records:
+        logger.warn('Processed no files - no output to write')
+        return
+
     # concatenate subrecords
     wave_records = {
         key: np.concatenate([subrecord[key] for subrecord in wave_records])