Streamlit 选择框正在重置网页

Question

我目前正在尝试使用选择框来允许用户选择列的名称来运行模型。当我在侧边栏中放置一个选择框时，我没有遇到问题，但是当我将选择框放在主页上时，只要用户选择一个选项，网页就会重置。代码如下。我还是流光新手，所以我不确定我是否正确使用它。感谢您的帮助！

#add a blank space in the columnName section
columnNames = [" "]

#grab the column names of the dataframe
for column in df.columns:
    columnNames.append(column)

#place the selectboxe in the col1 slot
with col1:
    #display the column names to the user
    #So that they can select the columns they want to use
    columnValue = st.multiselect("Select the column:", columnNames)

#place a button in col2 slot
with col2:
    #a button to add the selected column to a list of want to use columns
    addButtonList = st.button("Add to select list: ")

#when 'addButtonList' is selected take the value from
#'columnValue' and place it on the screen.
if(addButtonList):
    st.write(columnValue)

Answer 1

似乎有一种方法可以将session_state 设置为按钮。查看https://discuss.streamlit.io/t/the-button-inside-a-button-seems-to-reset-the-whole-app-why/1051或https://gist.github.com/tvst/faf057abbedaccaa70b48216a1866cdd了解详细说明。