#966: sensors_battery().power_plugged may erroneously return None on …

…Python 3
giampaolo · Feb 3, 2017 · ca01be5 · ca01be5
1 parent 44ca122
commit ca01be5
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diff --git a/HISTORY.rst b/HISTORY.rst
@@ -7,6 +7,8 @@
 
 **Bug fixes**
 
+- 966_: [Linux] sensors_battery().power_plugged may erroneously return None on
+  Python 3.
 - 968_: [Linux] disk_io_counters() raises TypeError on python 3.
 - 970_: [Linux] sensors_battery()'s name and label fields on Python 3 are bytes
   instead of str.

diff --git a/psutil/_pslinux.py b/psutil/_pslinux.py
@@ -1153,7 +1153,7 @@ def multi_cat(*paths):
             os.path.join(POWER_SUPPLY_PATH, "AC0/online"),
             fallback=b"0") == b"1"
     elif os.path.exists(root + "/status"):
-        status = cat(root + "/status", fallback="").lower()
+        status = cat(root + "/status", fallback="", binary=False).lower()
         if status == "discharging":
             power_plugged = False
         elif status in ("charging", "full"):