Chaning instance methods

[Jody Winston]

I don't understand how to change instance methods.  For example:

class Foo:
	def __init__(self):
		self.data = 42
	def m(self):
		print "Foo.m"
		print dir(self)

def m2(self):
	print "m2"
	print dir(self)

f = Foo()
f.m()
# this fails
# f.m = m2
# f.m()
Foo.m = m2 # Changes all instances of Foo.m
f.m()

f2 = Foo()
f2.m()

What am I forgetting?

-- 
Jody Winston
Manager SeisRes
Lamont-Doherty Earth Observatory
RT 9W, Palisades, NY 10964
jody at ldeo.columbia.edu, 914 365 8526, Fax 914 359 1631 

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