Where is the model file for the sample audio?

[dsun29]

Hi all, I am very new to TTS and F5. I just cloned a sample audio using the gradio web interface. Could anyone help me with a couple questions below. Much appreciated!

1. Does F5 generate a model file(or whatever it is called) for the sample/reference audio? If yes, where can I find it?
2. is there a Python API? If yes, where can I find the API references or sample code?
3. for the same speaker(voice), do we have to provide a different reference audio for each tone(emotions) like excited, angry, relaxed or fearful?