Kapacitor get tag value for influxdb series

[pratikdas44]

Hi, I am using Tickscript and my purpose is to run the python script if the value is 0. Below is my code:
`var data = batch
|queryFlux('''
from(bucket: "bucket_name")
|> range(start: -3h)
|> filter(fn: (r) => r["_measurement"] == "measurement_name")
|> filter(fn: (r) => r["_field"] == "field_name")
|> filter(fn: (r) => r["_value"] > 0)
|> truncateTimeColumn(unit: 1h)
''')
.org('org_name')
.period(190m)
.every(30m)

var alert = data
|alert()
.crit(lambda: "_value" > 0)
.exec('python3', 'python-file-location', '--node', '{{ index .Fields "_value" }}')`

I was trying to use template and pass a random parameter, However I am getting “{{ index .Fields “_value” }}” in python file instead of some actual string. My requirement is to pass value of tag column say “A” as an argument to python file. How can I get that value.

[izenn]

have you tried setting what you want to send as a variable? (i've noticed some weird things when using {{ something }})
var value = '{{ index .Fields "_value" }}'

and then change your exec line to:
.exec('python3', 'python-file-location', '--node', "value")
(not sure if you need the quotes around value)