Validation of parameters

[Kless]

On 10 ago, 15:03, Paddy <paddy3... at googlemail.com> wrote:
> If you just want the absense of _foo to raise an exception then why to
> just reference self._foo and leave the hard work to ptyhon? Something
> like:
>
>   self._foo
>
> If it is present then fine, if it is not then an exception is raised.
It only was an example but I need show a better message. You can see
code here [1]:


[1] http://github.com/kless/cryha/tree/master/cryha/hasher.py#L141