cgi form handler question

[Peter Hansen]

Ian Bicking wrote:
> 
> > the user forgets to input his email and age
> > how would i write a for loop to output:
> >
> > email
> > age
>
> You'd have to define the fields you required, like:
> 
> requiredFields = ['name', 'email', 'address', 'age', 'salary']
> for field in requiredFields:
>     if not form.has_key(field):
>         print field
> 
> Or you might be able to do:
> 
> for name in form.keys():
>     if not form[name].value:
>         print name

The latter suggestion won't usually work, as the data sent
from the browser does not even contain the names of the fields
which are left empty. 

-Peter