[issue1437] List member inside a class is shared by all instances of the class

Quentin Gallet-Gilles report at bugs.python.org
Tue Nov 13 14:11:41 CET 2007


Quentin Gallet-Gilles added the comment:

That's the expected behavior, actually. The variables 'arr' and 's' are
static variables in the class Blah.
This is discussed in several places in the doc and the FAQ, e.g.
http://www.python.org/doc/faq/programming/#how-do-i-create-static-class-data-and-static-class-methods


What you're looking for is :

class Blah:
    def __init__(self, s):
        self.arr= []
        self.s = s
...

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nosy: +quentin.gallet-gilles

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