[issue4098] surprised by default list parameter

[Ulrich Eckhardt]

Ulrich Eckhardt <eckhardt at satorlaser.com> added the comment:

http://effbot.org/pyfaq/why-are-default-values-shared-between-objects.htm

The same recently cropped up on the users mailinglist under the topic
"default value in __init__".

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nosy: +eckhardt

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue4098>
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