net/pollers.py: move Stats and SimpleStats into utils.py

SimpleStats and Stats are generic classes and therefore they should live
in neubot/utils.py rather than in net/pollers.py.

neubot/net/pollers.py

@@ -27,6 +27,8 @@
 from select import error
 from neubot.utils import unit_formatter
 from neubot.utils import ticks
+from neubot.utils import SimpleStats
+from neubot.utils import Stats
 from select import select
 from sys import stdout
 from errno import EINTR
@@ -76,35 +78,6 @@ def __del__(self):
 # Interval between each check for timed-out I/O operations
 CHECK_TIMEOUT = 10
 
-class SimpleStats:
-    def __init__(self):
-        self.begin()
-
-    def __del__(self):
-        pass
-
-    def begin(self):
-        self.start = ticks()
-        self.stop = 0
-        self.length = 0
-
-    def end(self):
-        self.stop = ticks()
-
-    def account(self, count):
-        self.length += count
-
-    def diff(self):
-        return self.stop - self.start
-
-    def speed(self):
-        return self.length / self.diff()
-
-class Stats:
-    def __init__(self):
-        self.send = SimpleStats()
-        self.recv = SimpleStats()
-
 class Poller:
     def __init__(self, timeout):
         self.timeout = timeout

neubot/utils.py

@@ -245,3 +245,36 @@ def XML_to_string(document):
 
 def XML_to_stringio(document):
     return StringIO(XML_to_string(document))
+
+#
+# Stats
+#
+
+class SimpleStats:
+    def __init__(self):
+        self.begin()
+
+    def __del__(self):
+        pass
+
+    def begin(self):
+        self.start = ticks()
+        self.stop = 0
+        self.length = 0
+
+    def end(self):
+        self.stop = ticks()
+
+    def account(self, count):
+        self.length += count
+
+    def diff(self):
+        return self.stop - self.start
+
+    def speed(self):
+        return self.length / self.diff()
+
+class Stats:
+    def __init__(self):
+        self.send = SimpleStats()
+        self.recv = SimpleStats()