app.py

import streamlit as st
from streamlit_ace import st_ace

code= "def f1(x): return str(x * 3)"
exec(code)
st.write(f1(3))

content = st_ace(language="python")

st.write(len(content.splitlines()))
exec(content)
code= "def f1(x): return str(x * 3)"
 
exec(code)
st.text(content)
st.write(f1(3))
st.write(test_fun(3))