[pox-dev] destructor of MyController class is not being called.

[Karthik Sharma]

I have a class called MyController where I use the destructor to print some
statistics.

class MyController (object):
  def __init__ (self, connection):
    self.connection = connection
    connection.addListeners(self)
    # Use this table to keep track of which ethernet address is on
    # which switch port (keys are MACs, values are ports).
    self.mac_to_port = {}
    # This will keep track of the traffic matrix.
    # matrix[i][j]=number of times a packet from i went to j
    self.matrix={}
    self.total_ins_time = 0
    self.total_query_time = 0
    self.total_ins_count = 0
    self.total_query_count = 0
  def __del__(self):
        print "avg insert time ",(self.total_ins_time/self.total_ins_count);
        print "avg query
time",(self.total_query_time/self.total_query_count);


I have a function

def act_like_switch (self, packet, packet_in):

which implements the logic.It is called from

 def _handle_PacketIn (self, event):

Is the destructor of the MyController class a good place to print the
statistics that I collect during the running of the controller? If not
where should I do it? and also why is the destructor of MyController class
not being called.As you would have guessed,I am new to Python.

Regards,
Karthik.