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-rw-r--r--ebus/__init__.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/ebus/__init__.py b/ebus/__init__.py
index 9ac981d..ad79846 100644
--- a/ebus/__init__.py
+++ b/ebus/__init__.py
@@ -117,7 +117,10 @@ class EbusXMLMixin(object):
p=EbusXMLMixin.ebus_xml.xpath("/ebus/packets/packet[@primary=$primary and @secondary=$secondary]",
primary="#x%.2x"%self.primary_command,
secondary="#x%.2x"%self.secondary_command)
- return len(p)>0 and p[0] or None
+ if len(p)>0 and p[0] is not None:
+ return p[0]
+ else:
+ return None
def _get_source(self):
s=EbusXMLMixin.ebus_xml.xpath("/ebus/devices/device[@address=$address]",