[web2py] Specify password strengh, with error feedback

[Daniel Gonzalez]

Hi,

Is is possible to specify what kind of password is allowed? For example, 
let's say I want:

   - length >=8
   - at least 1 uppercase
   - at least 1 lowercase
   - at least 1 number
   - at least 1 char in a pre-defined set()

I would also like to give the end-user information about why the password 
did not pass the cut, like "At least one uppercase is needed".

How would this be done in web2py?

Thanks,
Daniel

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