From 1c06af9d0a2e00b426da09c6b10417cc2ce9398c Mon Sep 17 00:00:00 2001
From: "E. Joshua Rigler" <erigler@usgs.gov>
Date: Wed, 19 Feb 2020 15:19:52 -0700
Subject: [PATCH] Fix miniseed factory default convert_channels

Force miniseed factory constructor to create at least an empty list to
hold list of channels to convert.
---
 geomagio/edge/MiniSeedFactory.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/geomagio/edge/MiniSeedFactory.py b/geomagio/edge/MiniSeedFactory.py
index d95ad4d97..da1999051 100644
--- a/geomagio/edge/MiniSeedFactory.py
+++ b/geomagio/edge/MiniSeedFactory.py
@@ -76,7 +76,7 @@ class MiniSeedFactory(TimeseriesFactory):
         self.host = host
         self.port = port
         self.write_port = write_port
-        self.convert_channels = convert_channels
+        self.convert_channels = convert_channels or []
         self.write_client = MiniSeedInputClient(self.host, self.write_port)
 
     def get_timeseries(self, starttime, endtime, observatory=None,
-- 
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