Python instances

[henrikpierrou at hotmail.com]

Hi,

How do python instances work?
Why does the code at the end of my posting produce this output:

list in a:
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
list in b:
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

instead of

list in a:
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
list in b:
[]

----------------------------

class MyClass:
    list = []

    def add(self, x):
        self.list.append(x)

    def printer(self):
        print self.list

a = MyClass()
b = MyClass()

for n in range(10):
    a.add(n)

print "list in a:"
a.printer()
print "list in b:"
b.printer()

/H