Clicking the button in Python Streamlit adds an input box.

Apr 21, 2023#Python #低代码78

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Streamlit is a Python-based WebUI tool that allows for low-code development. The user used Streamlit to create a webpage and generate a YAML rule file. They encountered a need for interactivity, such as adding an input box when a button is clicked. After searching, they found a good approach and recorded it. The code includes importing Streamlit, generating random keys, adding new rows when a button is clicked, and collecting input values.

Streamlit is a Python-based WebUI tool, and it is not an exaggeration to say that it is a low-code tool. I used it to create a page for myself these days and generated a rule file in YAML format. I encountered a situation where interaction was needed in the middle, such as clicking a button to add an input box. After searching for a long time, I finally found the approach and code written by a foreign guy, and both the idea and the code are very good, so I recorded it here.

import streamlit as st
import random
import string

if 'input_keys' not in st.session_state:
    st.session_state.input_keys= []

if st.button("Add new row"):
    st.session_state.input_keys.append(random.choice(string.ascii_uppercase)+str(random.randint(0,999999)))

input_values = []
for input_key in st.session_state.input_keys:
    input_value = st.text_input("Please input something", key=input_key)
    input_values.append(input_value)