DO NOT USE! There's an experimental API in Streamlit now, called st.experimental_rerun()

st_rerun.py

from streamlit.ScriptRequestQueue import RerunData
from streamlit.ScriptRunner import RerunException
from streamlit.server.Server import Server
import streamlit.ReportThread as ReportThread


def rerun():
    """Rerun a Streamlit app from the top!"""
    widget_states = _get_widget_states()
    raise RerunException(RerunData(widget_states))


def _get_widget_states():
    # Hack to get the session object from Streamlit.

    ctx = ReportThread.get_report_ctx()

    session = None
    session_infos = Server.get_current()._session_infos.values()

    for session_info in session_infos:
        if session_info.session._main_dg == ctx.main_dg:
            session = session_info.session

    if session is None:
        raise RuntimeError(
            "Oh noes. Couldn't get your Streamlit Session object"
            'Are you doing something fancy with threads?')
    # Got the session object!

    return session._widget_states

I updated the gist to work with the more recent streamlit versions 0.54.0 and upwards. The fork can be found here!

Script won't work for 0.57.3, fixed version: https://gist.github.com/goraj/47f4e365a13b11c4c0eba4f233acda76

I get RecursionErrors after about a 1000 reruns. Must be because of the nested raised RerunExceptions.

I think it can be fixed using session.request_rerun()