Re: How to pickle bound methods

[srinivasan srinivas]

HI Peter,
It works will for instance and class methods. But it doesn't work for static methods.
Can you tel me how to pickle static methods as well??
Thanks,
Srini

----- Original Message ----
From: Peter Otten <__peter__@web. de>
To: python-list@python.org
Sent: Wednesday, 2 July, 2008 12:53:19 PM
Subject: Re: How to pickle bound methods

srinivasansrini vas wrote:

I would like to know how to pickle a bound method??

$ cat pickle_method.p y
import copy_reg
import new

def make_instanceme thod(inst, methodname):
    return getattr(inst, methodname)

def pickle_instance method(method):
    return make_instanceme thod, (method.im_self , method.im_func. __name__)

copy_reg.pickle (new.instanceme thod, pickle_instance method,
make_instanceme thod)

if __name__ == "__main__":
    import pickle

    class A(object):
        def __init__(self, who):
            self.who = who
        def alpha(self):
            print "Hello,", self.who


    FILENAME = "method.pic kle"

    import sys
    args = sys.argv[1:]
    if args:
       a = A(args[0])
        m = a.alpha
       pickle.dump(m, open(FILENAME, "wb"))
    else:
       m = pickle.load(ope n(FILENAME, "rb"))
        m()

$ python pickle_method.p y world
$ python pickle_method.p y
Hello, world
$ python pickle_method.p y Srini
$ python pickle_method.p y
Hello, Srini

Peter
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[Peter Otten]

Re: How to pickle bound methods

srinivasan srinivas wrote:

(Please don't top-post)

It works will for instance and class methods. But it doesn't work for
static methods. Can you tel me how to pickle static methods as well??

For static methods pickling is not so easy because these don't carry
information about the class they belong to. What are you trying to do?

Peter