Re: How to call a function when a project starts.

It runs twice because runserver uses two processes: the real server, and; the monitoring process that restarts the other when you change a source file. You could fool around with undocumented internals to figure out which a given import is running in.  Or you could use a modifies runserver command. Or you could modify manage.py. Or you could, if your O/S supports it, open a file for exclusive use and the one that can't knows that it is the server process.

On Jul 30, 2014 7:30 PM, "Mike Dewhirst" <miked@dewhirst.com.au> wrote:

On 31/07/2014 5:57 AM, Chen Xu wrote:

Hi Everyone:
I would like to call a function when my project starts, basically I want
to call a do_something() when I run python manage.py runserver. However,
when I put it into settings.py, it gets called twice, but I only want it
to execute once.

Is there a good way to do it.

Maybe you could turn do_something() a singleton so it only executes once?

http://stackoverflow.com/questions/6760685/creating-a-singleton-in-python

Thanks


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âš¡ Chen Xu âš¡

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