[Tutor] demon / app I/F better way ?

Dave S pythontut at pusspaws.net
Sun Nov 14 14:34:27 CET 2004

Hi there,

I am planning a python app but have hit a dilemma.

I have a time critical python app that will be running constantly as a 
demon, checking a data web page for updates & archiving any changes. 
When a change occurs it needs to signal another python app that new data 
has arrived.

OK this is the way I am planning to do this, if there is a neater way 
please shout :-D

the demon dumps data in /data/data_new & also changes the state of a 
flag /data/data_flag to true when it has found new changes

my main app when it is ready to accept data checks the status of 
/data/data_flag every second, if it changes to a true state reads in 
/data/data_new & sets /data/data_flag to false, performs processing then 
checks /data/data_flag ...

This will work (I think ;-) ) but seems a bit clunky, anyone got a more 
elegant solution?


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