I mean actual process, not session. You run into problems if you start
two instances of web2py on the same machine or on different machines.
Also mind that the cache uses the filename as key (first argument of
cache.ram) to retrieve the file. You may want the key dependent on the
response.session_id if you have one file per session. That depends on
details.
Massimo
On Nov 17, 2:16 pm, artien <[EMAIL PROTECTED]> wrote:
> Thanks the cache.ram works :) One process running web2py do you mean
> as in actual processes or as in sessions?
>
> Artien
>
> On Nov 17, 8:00 pm, mdipierro <[EMAIL PROTECTED]> wrote:
>
> > You are trying to create a process from one action (one http request)
> > and access it from another one. This is what pexpect is for.
> > I have neve used it before. The problem is that objects create in one
> > request are not persistant unless you say do.
>
> > There are two mechanisms for persistance: session and cache.
>
> > 1) try session
>
> > def do_file(param1):
> > if param1 == 'create':
> > session.child=pexpect.spawn('nano -wc myfile.txt')
> > else:
> > session.child.sendline(param1)
> > session.child.close()
>
> > will work if and only if child is pickable else you will get an error.
>
> > 2) try cache.ram
>
> > def do_file(param1):
> > if param1 == 'create':
> > filename='myfile.txt'
> > child=cache.ram(filename,lambda:pexpect.spawn('nano -wc
> > '+filename),0) #update cache
> > else:
> > # retrieve from cache without expiration
> > child=cache.ram(filename,lambda:None,10**10) #cache forver
> > child.sendline(param1)
> > child.close()
>
> > this will work as long as you have only one process running web2py.
>
> > On Nov 17, 12:26 pm, artien <[EMAIL PROTECTED]> wrote:
>
> > > Hello,
>
> > > I'm trying to use pexpect from web2py with limited success. What I
> > > notice is that web2py doesn't treat the object like a normal python
> > > program would.
>
> > > A simple example (my real program creates ssh sessions this is just to
> > > demonstrate the issue):
>
> > > with ajax I call two functions:
>
> > > first it calls
> > > def open_file():
> > > do_file('create')
> > > message = 'created'
> > > return dict(message=message)
>
> > > then it calls
> > > def data_file():
> > > info =request.vars.values()[0]
> > > do_file('hello this program is crap)
> > > message = 'stored info into file'
> > > return dict(message=mesage)
>
> > > Then we have the controller function which does it
>
> > > def do_file(param1):
> > > if param1 == 'create':
> > > child=pexpect.spawn('nano -wc myfile.txt')
> > > else:
> > > child.sendline(param1)
> > > child.close()
>
> > > Now it says that the second time:
>
> > > UnboundLocalError: local variable 'child' referenced before assignment
>
> > > When I try to store the child object in a session variable I get the
> > > error that it can't store file objects.
>
> > > Is there anyway I can make web2py keep its reference to the object so
> > > I can keep using it?
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