import gradio as gr
import io
import sys

class PersistentRunner:
    def __init__(self):
        self.globals = {}

    def run(self, code):
        old_stdout = sys.stdout
        sys.stdout = buffer = io.StringIO()

        try:
            exec(code, self.globals)
        except Exception as e:
            print(f"Error: {e}")
        finally:
            sys.stdout = old_stdout

        return buffer.getvalue()

runner = PersistentRunner()

def run(code):
    return runner.run(code)

demo = gr.Interface(fn=run, inputs="text", outputs="text")
demo.launch()