Streamlit 中的 Web 应用程序，每页有多个问题

Question

我正在使用 Streamlit 开发一个网络应用程序，我正在寻找一种方法让每页有多个问题（见下文）。目前，如果用户回答第一个问题或回答第二个问题，应用程序会自动加载下一组问题。我该如何更改以便仅当用户对第一个问题和对第二个问题做出回复时才加载下一组问题？

我目前使用的逻辑如下：

st.table(Text_lines)
col1, col2 = st.columns([1,1])
with col3:
    if st.button('Option 1'):
        st.session_state.option1 = 1
with col4:
    if st.button('Option 2'):
        pass

st.table(Other_text_lines)
col3, col4 = st.columns([1,1])
with col3:
    if st.button('Sensible (Q)'):
        st.session_state.sensibility = 1
with col4:
    if st.button('Not sensible (W)'):
        pass

Answer 1

一种方法是通过表单来控制问题的加载。完成后用户将按下提交按钮。

例子

import streamlit as st


if 'num' not in st.session_state:
    st.session_state.num = 0


choices1 = ['no answer', 'manila', 'tokyo', 'bangkok']
choices2 = ['no answer', 'thailand', 'japan', 'philippines']

qs1 = [('What is the capital of Japan', choices1),
    ('What is the capital of Philippines', choices1),
    ('What is the capital of Thailand', choices1)]
qs2 = [('What country has the highest life expectancy?', choices2),
    ('What country has the highest population?', choices2),
    ('What country has the highest oil deposits?', choices2)]


def main():
    for _, _ in zip(qs1, qs2): 
        placeholder = st.empty()
        num = st.session_state.num
        with placeholder.form(key=str(num)):
            st.radio(qs1[num][0], key=num+1, options=qs1[num][1])
            st.radio(qs2[num][0], key=num+1, options=qs2[num][1])          
                      
            if st.form_submit_button():
                st.session_state.num += 1
                if st.session_state.num >= 3:
                    st.session_state.num = 0 
                placeholder.empty()
            else:
                st.stop()


main()

输出

按提交，将加载新的问题集。

Streamlit 中的 Web 应用程序，每页有多个问题

Web app in Streamlit with multiple questions per page

python

streamlit