Split text file using LangChain CharacterTextSplitter

split_text.py

import streamlit as st
from langchain.text_splitter import CharacterTextSplitter

text_file = st.file_uploader("Upload text file", type="txt")

if text_file is not None:
    text = text_file.read().decode("utf-8")

    if st.button("Load"):
        try:
            text_splitter = CharacterTextSplitter(        
                separator = "\n\n",
                chunk_size = 1000,
                chunk_overlap  = 200,
                length_function = len,
            )

            texts = text_splitter.create_documents([text])
            st.success(texts[0])
        except Exception as e:
            st.error(e)