pyjq - how to use "select" with both query and value as variables - json

Question

I am writing a code in python3 where i am struggling with usage of variables with "pyjq", the code works without variables but variables are not getting parsed inside pyjq.
The documentation referred is https://github.com/doloopwhile/pyjq/blob/master/README.md#api
Please check the code given below and suggest -
My code
import json, os
import pyjq
from flask import Flask, request, jsonify
def query_records():
args = {"meta.antivirus.enabled": "true"}
for key, value in args.items():
with open('/tmp/data.txt', 'r') as f:
print (key)
print (value)
data = f.read()
records = json.loads(data)
query = ("." + key)
print (query)
#jq '.[]|select(.meta.antivirus.enabled=="true")' filename.json works,issue with variable substitution in python
match = pyjq.all('.[]|select(["$query"]==$value)', records, vars={"value": value,"query": query})
print (match)
query_records()
Content of file "/tmp/data.txt"
[
{
"name": "alpharetta",
"meta": {
"antivirus": {
"enabled": "true"
},
"limits": {
"cpu": {
"enabled": "true",
"value": "250m"
}
}
}
},
{
"meta": {
"allergens": {
"eggs": "true",
"nuts": "false",
"seafood": "false"
},
"calories": 230,
"carbohydrates": {
"dietary-fiber": "4g",
"sugars": "1g"
},
"fats": {
"saturated-fat": "0g",
"trans-fat": "1g"
}
},
"name": "sandwich-nutrition"
},
{
"meta": {
"allergens": {
"eggs": "true",
"nuts": "false",
"seafood": "true"
},
"calories": 440,
"carbohydrates": {
"dietary-fiber": "4g",
"sugars": "2g"
},
"fats": {
"saturated-fat": "0g",
"trans-fat": "1g"
}
},
"name": "random-nutrition"
}
]
Expected output(which works without variables)
{
"name": "alpharetta",
"meta": {
"antivirus": {
"enabled": "true"
},
"limits": {
"cpu": {
"enabled": "true",
"value": "250m"
}
}
}
}
Current output []
seems like some issue with variables not being passed in case of "query" , help would be appreciated.
Edit 1
It works if I hardcode "query" -
match = pyjq.all('.[]|select(.meta.antivirus.enabled==$value)', records, vars={"value": value,"query": query})
but not vice-versa
which probably narrows it down to issue with the variable "query"
JQ is not a necessity and I can use other libraries too,given that json is returned

Answer 1

Variables are intended to be used for values, not for jq expressions (at least not directly).
I think the easiest option here is to go for an fstring:
match = pyjq.all(f'.[]|select({query}==$value)', records, vars={"value": value})
and it probably makes sense to prepend the period inside the fstring:
match = pyjq.all(f'.[]|select(.{key}==$value)', records, vars={"value": value})