added mem.py

i3pystatus/mem.py

@@ -0,0 +1,20 @@
+from i3pystatus import IntervalModule
+
+class Mem(IntervalModule):
+    """
+    Shows system load
+    """
+
+    format = "{free_mem} MB"
+    settings = (
+        ("format", "format string used for output. {free_mem is the amount of free memory in MB}."),
+    )
+
+    file = "/proc/meminfo"
+
+    def run(self):
+        with open(self.file, "r") as f:
+            free_mem = int(round(int(f.readlines()[1].split()[1])/1024,0))
+        self.output = {
+            "full_text" : self.format.format(free_mem=free_mem),
+        }