fix memory info code
diff --git a/sensors/psram_sensors.py b/sensors/psram_sensors.py
index ba3da4a..6517520 100644
--- a/sensors/psram_sensors.py
+++ b/sensors/psram_sensors.py
@@ -1,10 +1,8 @@
-from ps_mem import getMemStats
+from ps_mem import get_mem_stats
 
 from discover import provides
 from utils import SensorInfo, get_pid_name, get_pid_list
 
-
-
 @provides("perprocess-ram")
 def psram_stat(disallowed_prefixes=None, allowed_prefixes=None):
     results = {}
@@ -14,7 +12,7 @@
         try:
             dev_name = get_pid_name(pid)
 
-            private, shared = getMemStats(pid)
+            private, shared = get_mem_stats(pid)
             total = private + shared
             sys_total = get_ram_size()
             usage = float(total) / float(sys_total)
@@ -24,7 +22,8 @@
             results[sensor_name + ".private_mem"] = SensorInfo(private, False)
             results[sensor_name + ".shared_mem"] = SensorInfo(shared, False)
             results[sensor_name + ".used_mem"] = SensorInfo(total, False)
-            results[sensor_name + ".mem_usage_percent"] = SensorInfo(usage*100, False)
+            name = sensor_name + ".mem_usage_percent"
+            results[name] = SensorInfo(usage * 100, False)
         except IOError:
             # permission denied or proc die
             continue