app.py

import gradio as gr

def dummy(file_objs):
  print(file_objs)
  if isinstance(file_objs, list):
    files = [f for f in file_objs]
    return files
  return file_objs

with gr.Blocks() as demo:
  with gr.Row():
    fl = gr.File(file_count='single', label='Testing for Single File Count')
    tb = gr.TextArea()
  gr.Button().click(dummy, fl, tb)

demo.launch()