On Thursday 28 March 2002 08:49 pm, theeba wrote:

Hi,

I'm trying to insert a value which is computed using python into a table. The python script looks as follows: -

import string return((string.atof(QuantityA) * string.atof(WeightA)) + (string.atof(QuantityB) * string.atof(WeightB)) + (string.atof(QuantityC) * string.atof(WeightC)) + (string.atof(QuantityD) * string.atof(WeightD)))

The sql query to insert this value into the table is as shown below: -

[Arguments : QuantityA, QuantityB, QuantityC, QuantityD]

insert into table (Net_Weight)

VALUES (<dtml-in sqlGetSackWeight><dtml-var expr="pyCalculateSackWeight(QuantityA, WeightA, QuantityB, WeightB, QuantityC, WeightC, QuantityD, WeightD)"></dtml-in>)

The sqlGetSackWeight is another sql query to retrieve the value of WeightA, WeightB, WeightC and WeightD which is stored in a separate table. These values would be multiplied by the value of the arguments and the total is computed.

The problem is, when I test the sql query to do an insert, I get an error as shown below

Error Value: Missing objects do not support conversion to float.

(Info: ({'script': <PythonScript instance at 08C40F00>, 'context': <r instance at 08EE1D40>, 'container': <Folder instance at 08DD16D0>, 'traverse_subpath': []}, ('1', Missing.Value, '2', 10, '3', Missing.Value, '4', Missing.Value), {}, None)) File Script (Python), line 5, in pyCalculateSackWeight File E:\Zope2.4.1-NEW\bin\lib\string.py, line 199, in atof TypeError: (see above)

Why is it that the value for WeightA, WeightC and WeightD seems to be a missing whereas, the value for WeightB (i.e 10) is inserted?

not exactly sure, sql methods operate in a slightly different namespace, quoting out of context from DT_Var.py re Missing 'Missing values are provided for variables which are not present in the name space' how are you calling the sql method, have you tried explictly passing the parameters?? kapil