Question

我试图利用用户文本投入,使用户能够打到进入钥匙或利用 but子在 but子下书写文字,然后在 but子被点击或进入使用后澄清投入案文。当我尝试这一法典时,它将明确案文投入并正确写出案文,但当我使用进入钥匙时,当我使用ton子时,它将写出价值,但明确其价值,并在书写纽伦价值之后,看上去看清这种价值。

import streamlit as st

if "my_text" not in st.session_state:
   st.session_state.my_text = ""

def submit():
    st.session_state.my_text = st.session_state.widget    
    st.session_state.widget = ""

st.text_input("Enter text here", key="widget", on_change=submit)

st.button("Submit", on_click=submit)

my_text = st.session_state.my_text

st.write(my_text)

Answer 1

纽伦特语使用纽伦语的行为是由on_change造成的。页: 1

st.text_input("Enter text here", key="widget", on_change=submit)

www.un.org/Depts/DGACM/index_spanish.htm 例假:

User enters "aa" for example
Presses the button
Executes submit, (**notice this, there was a change in the value from empty to "aa"), and sets st.session_state.widget to empty
Executes the rest of the code below
It comes back to submit again because the **on_change was triggered.
Now the value of st.session_state.my_text is empty

因此,最终没有印本。

Answer 2

如果你尝试这一守则,你可能会发现它如何发挥作用。

import streamlit as st
import logging
import sys

logging.basicConfig(level=logging.INFO, stream=sys.stdout)
logger = st.logger.get_logger(__name__)

logger.info( initial )
if "my_text" not in st.session_state:
    st.session_state.my_text = ""

def submit():
    logger.info( submit %s , st.session_state.widget)
    st.session_state.my_text = st.session_state.widget
    st.session_state.widget = ""

st.text_input("Enter text here", key="widget", on_change=submit)

st.button("Submit", on_click=submit)

my_text = st.session_state.my_text

st.write(my_text)
logger.info( --terminate )

标识如下:

first at 11:46:10
"text only" at 11:46:29
"text and button" (6 lines) at 11:46:49

2024-02-25 11:46:10.359 initial
2024-02-25 11:46:10.479 --terminate
2024-02-25 11:46:29.061 submit text only
2024-02-25 11:46:29.062 initial
2024-02-25 11:46:29.065 --terminate
2024-02-25 11:46:49.201 submit text and button
2024-02-25 11:46:49.201 initial
2024-02-25 11:46:49.205 --terminate
2024-02-25 11:46:49.327 submit
2024-02-25 11:46:49.328 initial
2024-02-25 11:46:49.330 --terminate

友情链接