On Monday, November 27, 2017 at 4:41:20 PM UTC+2, Pierre wrote:
>
> here:
>
> http://web2py.com/books/default/chapter/29/06/the-database-abstraction-layer#sum--avg--min--max-and-len
>
> and don't be too severe with your students...........
>
I am having an issue, in the process of calculating the total sum of
*averages* i also add them up to the the database's *totalAverage* field so
that i retain this information to monitor student performance, the problem
now is it adds all the values in *averages* except the last value in the
the list, for an example if i have the values *1,2,3,4,5,6 *which have to
add up to 21 its gonna end its addition with the value 5 giving me a sum of
15 leaving out the value of 6 which would've given me a total of 21. How
can i get it to add them up all as it adds them the *totalAverage* field?
Here is my code:
def calcPerc(form):
summed=db.marks.average.sum()
totalav=db().select(summed).first()[summed]
form.vars.totalAverage=totalav
if totalav>=80 and totalav<100:
avGrade='A'
form.vars.averageGrade=avGrade
elif totalav<=79 and totalav>=70:
avGrade='B'
form.vars.averageGrade=avGrade
elif totalav<=69 and totalav>=60:
avGrade='C'
form.vars.averageGrade=avGrade
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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