[Python-ideas] List Revolution

[Massimo Di Pierro]

remember name is an attribute. It cannot contain special symbols (*) by definition. There is no way you can build "**".



On Sep 10, 2011, at 12:43 PM, Devin Jeanpierre wrote:

>> Damn dollar signs.
>> if not re.compile('^[\d\+\*\(\)]+$').match(name): return AttributeError
> 
> '(2**1024)**(2**1024)' etc.
> 
> Devin
> 
> On Sat, Sep 10, 2011 at 1:05 PM, Massimo Di Pierro
> <massimo.dipierro at gmail.com> wrote:
>> LOL.
>> 
>> Damn dollar signs.
>> if not re.compile('^[\d\+\*\(\)]+$').match(name): return AttributeError
>> 
>> On Sep 10, 2011, at 11:45 AM, Stefan Behnel wrote:
>> 
>>> Massimo Di Pierro, 10.09.2011 18:35:
>>>> [...]
>>>>         if not re.compile('[\d\+\*\(\)]+').match(name): return AttributeError
>>>> [...]
>>>> I would like to stress that the use of eval in this case is safe as the expression is first validated against a regex.
>>> 
>>> Nice try. And it would even be ok if you had assured that the *entire* expression was validated against the regex.
>>> 
>>> Stefan
>>> 
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