Help in Placing Object in Memory
I am newbie to Python.. i want to know something.. can i place an object in disk instead of placing in Main Memory...? If possible, can you please explain with some scripts...? can two python script share a common object? -- http://mail.python.org/mailman/listinfo/python-list
Re: Help in Placing Object in Memory
Clement wrote: I am newbie to Python.. i want to know something.. can i place an object in disk instead of placing in Main Memory...? If possible, can you please explain with some scripts...? See the module pickle and it's examples. can two python script share a common object? What do you mean by that? They can both load a pickled object, yes. But they can't share it as a at-runtime object, where changes in one script are immediately are known to the other. To do such a thing, look at pyro. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Help in Placing Object in Memory
On Tue, 2007-03-27 at 16:49 +0200, Diez B. Roggisch wrote: can two python script share a common object? What do you mean by that? They can both load a pickled object, yes. But they can't share it as a at-runtime object, where changes in one script are immediately are known to the other. Remote procedure call, such as Python Twisted's PB library can allow this to virtually be the case. To do such a thing, look at pyro. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Help in Placing Object in Memory
Diez B. Roggisch [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] What do you mean by that? They can both load a pickled object, yes. But they can't share it as a at-runtime object, where changes in one script are immediately are known to the other. To do such a thing, look at pyro. Or not natively (i.e., that battery isn't included). I believe it can still be done, though: http://poshmodule.sourceforge.net/ (I haven't used the module - just used Google to locate it) You could, of course, roll-your-own solution using shared memory and/or other interprocess communication (http://docs.python.org/lib/ipc.html) Hope that helps, -ej -- http://mail.python.org/mailman/listinfo/python-list
Re: Help in Placing Object in Memory
Clement a écrit : I am newbie to Python.. To Python only, or to both Python and programming in general ? i want to know something.. can i place an object in disk instead of placing in Main Memory...? You can store it on disk (cf pickles and friends), but to actually use it you'll have to load it in memory anyway. can two python script share a common object? While there are technical answers on this, I guess you'd better learn how to use functions and pass objects between them. My 2 cents. -- http://mail.python.org/mailman/listinfo/python-list
Re: Help in Placing Object in Memory
On Mar 27, 10:33 am, Clement [EMAIL PROTECTED] wrote: I am newbie to Python.. i want to know something.. can i place an object in disk instead of placing in Main Memory...? If possible, can you please explain with some scripts...? can two python script share a common object? POSH allows shared objects, but it's not built-in. http://poshmodule.sourceforge.net/ If you're only looking for persistence (and not sharing), there's the (standard) shelve module. http://docs.python.org/lib/module-shelve.html If your need to share objects is fairly minimal and not performance- sensitive, you might be able to get by with shelves, sync, and file locking or some other locking. -- http://mail.python.org/mailman/listinfo/python-list
Re: Help in Placing Object in Memory
Clement [EMAIL PROTECTED] writes: I am newbie to Python.. i want to know something.. can i place an object in disk instead of placing in Main Memory...? If possible, can you please explain with some scripts...? can two python script share a common object? For the CPU to use the object, it needs to be in RAM. But it is possible to save the RAM image onto disk, and then bring it back later. The common approach is called pickling, though there are several variants on this: http://docs.python.org/lib/persistence.html -- Harry George PLM Engineering Architecture -- http://mail.python.org/mailman/listinfo/python-list
