app.py

from fastai.learner import load_learner
import gradio as gr

learn = load_learner('./export.pkl')

labels = learn.dls.vocab
def predict(img):
    pred,pred_idx,probs = learn.predict(img)
    return {labels[i]: float(probs[i]) for i in range(len(labels))}

gr.Interface(fn=predict, 
inputs=gr.inputs.Image(shape=(512, 512)), 
outputs=gr.outputs.Label(num_top_classes=3)).launch(share=True)