# HG changeset patch
# User Paul Fisher <paul@pfish.zone>
# Date 1569634643 14400
# Node ID 9310e2ff7e174fa380dc7c777b46cccefd14e284
# Parent  b52600fade25b4458722d8edeb9710497fad7d81
reader: Actually throw ValueError from _last_stable.

diff -r b52600fade25 -r 9310e2ff7e17 weatherlog/reader.py
--- a/weatherlog/reader.py	Fri Sep 27 21:36:16 2019 -0400
+++ b/weatherlog/reader.py	Fri Sep 27 21:37:23 2019 -0400
@@ -109,6 +109,7 @@
                 bucket_vals.append(v)
             if len(bucket_vals) == count:
                 return sorted(bucket_vals)[count / 2]
+    raise ValueError('No stable value.')
 
 
 def _is_reasonable_temp(temp: float) -> bool: