Hi
> > hofer a écrit :
> >> I have multiple objects all belonging to the same class
> >> (which I didn't implement and whose code I don't want to modify)
>
> >> Now I'd like to change one method for one object only (after it has
> >> been created) without adding any overhead
> >> to the call of the other object's methods.
Thanks for all of your answers:
Here an example with three of the suggested solutions:
(I didn't succeed in implementing Jason's solution with my
example)
########################################################
import threading
# some objects
a = threading.Event()
b = threading.Event()
c = threading.Event()
d = threading.Event()
def run_dly(o): # a test function
print o,"start",
o.wait(1)
print "stop"
# unmodified test
run_dly(a)
run_dly(b)
run_dly(c)
run_dly(d)
# The new Method
def verbose_wait(self,dly):
print "VERBOSE",
threading._Event.wait(self,dly)
### Implemented with partial
from functools import partial
b.wait = partial(verbose_wait,b)
### with __get__ for new classes
c.wait = verbose_wait.__get__(c,type(c))
## with new for old classes
import new
d.wait = new.instancemethod(verbose_wait,d,type(d))
run_dly(a)
run_dly(b)
run_dly(c)
run_dly(d)
############# end
thanks again
Hofer
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