Hi, I'm trying to add the logging module to my application, but I seem to be missing something. My application (a wxPython one) has a main script that calls various helper classes. I want the log messages from all modules to go to one central log file.
When I implement logging, I think that due to preparation, I get the same
message more than once.
Here's an example:
$ cat -n server.py
1 import logging
2 import logging.handlers
3
4 class Server():
5 def __init__(self):
6 self.client_logger = logging.getLogger("client")
7 self.client_logger.setLevel(logging.DEBUG)
8 h = logging.FileHandler("client.log")
9 h.setLevel(logging.DEBUG)
10 formatter = logging.Formatter("%(asctime)s %(name)-12s
%(levelname)-8s %(message)s")
11 h.setFormatter(formatter)
12 self.client_logger.addHandler(h)
13
14 def util(self):
15 self.client_logger.warning('This message comes from Server
module')
$ cat -n client.py
1 import logging
2 import logging.handlers
3 from server import Server
4
5 class Client():
6 def __init__(self):
7 self.client_logger = logging.getLogger("client")
8 self.client_logger.setLevel(logging.DEBUG)
9 h = logging.FileHandler("client.log")
10 h.setLevel(logging.DEBUG)
11 formatter = logging.Formatter("%(asctime)s %(name)-12s
%(levelname)-8s %(message)s")
12 h.setFormatter(formatter)
13 self.client_logger.addHandler(h)
14
15 def client_test(self):
16 self.client_logger.warning("This message comes from Client
module")
17
18 if __name__ == "__main__":
19 ser = Server()
20 cli = Client()
21 ser.util()
22 cli.client_test()
$ rm client.log ; python client.py ; cat client.log
2009-11-24 14:40:39,762 client WARNING This message comes from Server
module
2009-11-24 14:40:39,762 client WARNING This message comes from Server
module
2009-11-24 14:40:39,762 client WARNING This message comes from Client
module
2009-11-24 14:40:39,762 client WARNING This message comes from Client
module
Googling and reading http://docs.python.org/library/logging.html didn't
enlighten me.
Could you suggest what should I change in the above scripts so that the log
messages would appear only once ?
Thanks,
Ron.
server.py
Description: server.py
client.py
Description: client.py
client.log
Description: client.log
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