import gradio as gr

def greet(img_editor):
    return img_editor['composite']

iface = gr.Interface(fn=greet, 
                     inputs=gr.ImageEditor(), 
                     outputs=gr.Image(),
                     examples=[[{'background':'./christian.jpg', 'layers':None, 'composite':'./christian.jpg'}],[{'background':'./scarlett.jpg', 'layers':None, 'composite':'./scarlett.jpg'}]])
iface.launch()