How to add a text area input widget in streamlit

Recipe Objective: How to add a text area input widget in streamlit?

Streamlit allows you to add interactivity directly into the app with the help of widgets. You can a multi-line text input widget to your Streamlit app using "st.text_area". It returns a string.

 Syntax: st.text_area(label, value, height, max_chars, key, help, on_change, args, kwargs)
 Parameters:
   label -> A simple label that explains what this input widget is for
   value -> It is the value that is displayed on this widget on its first render. Internally, this will be cast to str
   height -> It is the desired height of the UI element expressed in pixels. If None, a default height is used.
   max_chars -> The maximum number of characters that can be entered.
   key -> An optional string or int to be used as a unique key for this widget. If omitted, a key will be generated for the widget based on its content. Multiple widgets of same types cannot share the same key.
  help -> An optional tooltip that get displayed next to the text area input.
  on_change -> An optional callback invoked when there is a change in this text area's value
  args -> An optional tuple of args that can be passed to the callback
  kwargs -> An optional dictionary of kwargs that can be passed to the callback

Code:

#importing required libraries
import streamlit as st

#adding a text area input widget
txt = st.text_area('Enter text: ')

#displaying the text entered by the user
st.write('The entered text is:',txt)


To run the app, either create an appname.py file with the above code using any text editor, or if you are using a jupyter notebook, you need to download your .ipynb notebook as a Python (.py) file and run the same using the "streamlit run appname.py" command. Once you run the command, the app will automatically open in your default browser.