How to create a json file from a variable and send the file to an external API?

I need to send an openai database file for training.

I have a variable that contains a json array with the response from another external request I made.

However, I cannot create the json file and load it into memory from a variable.

The open IA API only accepts the file type object and no other way like file URL or something like that.

How do I create the file from a json variable and load it in the request for open IA?

Thanks for your help! ❤️