Why don't optional mutable objects show up in vars(func)?
fredrik at pythonware.com
Wed Sep 27 18:52:37 CEST 2006
dannycolligan at gmail.com wrote:
> So I just got bitten by the "don't use a mutable object as an optional
> argument" gotcha. I now realize that for this function:
>>>> def func(x, y=):
> ... y.append(x)
> ... print y
> y is initialized when the function is imported, not when the function
> is executed. However, if this is the case, then why is y not showing
> up as an attribute of func?
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