Add uptime module

bumblebee/modules/uptime.py

@@ -0,0 +1,26 @@
+# pylint: disable=C0111,R0903
+
+"""Displays the system uptime."""
+
+import bumblebee.input
+import bumblebee.output
+import bumblebee.engine
+
+from datetime import timedelta
+
+class Module(bumblebee.engine.Module):
+    def __init__(self, engine, config):
+        super(Module, self).__init__(engine, config,
+            bumblebee.output.Widget(full_text=self.output)
+        )
+        self._uptime = ""
+
+    def output(self, _):
+        return "{}".format(self._uptime)
+
+    def update(self, widgets):
+        with open('/proc/uptime', 'r') as f:
+            uptime_seconds = int(float(f.readline().split()[0]))
+            self._uptime = timedelta(seconds = uptime_seconds)
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4