From 76984a4dbd74e3a338f3fcb3baa5696e16ad371a Mon Sep 17 00:00:00 2001
From: Martin Diehl <mail@martin-diehl.net>
Date: Fri, 20 Mar 2020 23:42:23 +0100
Subject: [PATCH] more sensible check

works also for numpy arrays. Not sure why the old way is considered to
be "pythonic", I think it can just cause trouble
---
 python/damask/util.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/python/damask/util.py b/python/damask/util.py
index b73206067..273da8c1e 100644
--- a/python/damask/util.py
+++ b/python/damask/util.py
@@ -71,7 +71,7 @@ def croak(what, newline = True):
         Separate items of what by newline. Defaults to True.
 
     """
-    if what:
+    if what is not None:
         sys.stderr.write(srepr(what,glue = '\n') + ('\n' if newline else ''))
     sys.stderr.flush()