[Python] How to remove return to line in a list in a JSON file?

In Python, I would like to get all elements from my lists BIRD_answer and my_answer in a single row:

{
"BIRD_answer":[
[
0.043478260869565216
],
[
0.07042253521126761
],
[
0.11363636363636363
]
],
"my_answer":[
[
"MillenniumHighAlternative",
0.043478260869565216
],
[
"RanchodelMarHigh(Continuation)",
0.07042253521126761
],
[
"DelAmigoHigh(Continuation)",
0.11363636363636363
]
]
}


To give me a format like this :

"BIRD_answer":[[0.043478260869565216],[0.07042253521126761],[0.11363636363636363]],
"my_answer":[["MillenniumHighAlternative",0.043478260869565216],["RanchodelMarHigh(Continuation)",0.07042253521126761],["DelAmigoHigh(Continuation)",0.11363636363636363]]
}


I have already tried to use jsbeautifier but doesn't work.

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