app.py

import gradio as gr
import joblib as jb

def predict(sex, age, pclass):
    model = jb.load("model.pkl")
    pclass = int(pclass)
    p = model.predict_proba([[sex, age, pclass]])[0]

    return {"Did not survive": p[0], "Survived": p[1]}

demo = gr.Interface(fn=predict,
                        inputs=[gr.Dropdown(choices=["male", "female"], type="index"),
                                "number",
                                gr.Dropdown(choices=[1, 2, 3], type="value")],
                        outputs="label")

demo.launch()