[issue3958] strage default value behaviour

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc <amauryfa at gmail.com> added the comment:

Your script is subject to the "shared default value" syndrome, explained
here:
http://www.python.org/doc/faq/general/#why-are-default-values-shared-between-objects

As indicated in the FAQ, your function could be rewritten like this:

def getElementsByAttrib(self, value, AName="ID-REF", list=None):
  if list is None:
      list = []
  ...

to have a less surprising behavior.

----------
nosy: +amaury.forgeotdarc
resolution:  -> invalid
status: open -> closed

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue3958>
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