Parametric jobs with DIRAC Python API

[Francisco VazquezdeSola]

I have a question on proper usage of the DIRAC Python API, please let me know if this is not the preferred channel for these questions.

My situation is the following. If I run a single job as follows, I have no issues (job1, input1 and output1 are the names of the script to be run, the input file, and the output file):

from DIRAC.Core.Base import Script
Script.initialize() #I want to avoid parseCommandLine()

from DIRAC.Interfaces.API.Job import Job
from DIRAC.Interfaces.API.Dirac import Dirac

j = Job()
j.setInputSandbox([job1, input1])
j.setOutputSandbox([job1, input1, output1])
j.setExecutable(job1)

dirac = Dirac()
dirac.submitJob(j)

However, if I try to run different jobs parametrically, inspired by the examples here:

from DIRAC.Core.Base import Script
Script.initialize() #I want to avoid parseCommandLine()

from DIRAC.Interfaces.API.Job import Job
from DIRAC.Interfaces.API.Dirac import Dirac

joblist = [job1, job2, job3]
inputlist = [input1, input2, input3]
outputlist = [output1, output2, output3]

j=job()
zippedinputsandbox = [list(t) for t in zip(joblist, inputlist) ]
j.setParameterSequence('InputSandbox', zippedinputsandbox)
zippedoutputsandbox = [list(t) for t in zip(joblist, inputlist, outputlist) ]
j.setParameterSequence('OutputSandbox', zippedoutputsandbox)

j.setParameterSequence("jobs", joblist)
j.setExecutable("sh", arguments = "%(jobs)s")

dirac = Dirac()
dirac.submitJob(j, mode='local')

Then I have issues. The script gets launched, but the input files don't seem to get sent to the worker node. I have tried different syntaxes for parametric jobs, but I am having no luck. Could I get confirmation about whether this is the proper way to do this?

[Francisco VazquezdeSola]

5 minutes after posting this thread, I noticed the warning from last year that said this forum is closing in favour of the one on github. Please, instead of replying here, do so there.