The code defines an object `text_splitter` by creating an instance...

The code defines an object text_splitter by creating an instance of the CharacterTextSplitter class with two parameters: chunk_size and chunk_overlap.

Specifically, it does the following:

1. Splitting Text: The CharacterTextSplitter is typically used to split a long piece of text into smaller chunks based on the number of characters.

2. chunk_size (20): This parameter indicates the maximum size (number of characters) of each chunk after splitting. Here, the chunks will be at most 20 characters long.

3. chunk_overlap (10): This parameter sets the overlap between consecutive chunks. Here, each chunk will overlap the next one by 10 characters, which means there will be shared text between adjacent chunks.

Example:

If you input the text "abcdefghijklmnopqrstuvwxyz", the CharacterTextSplitter would split it like this:

• Chunk 1: "abcdefghijklmnopqrst" (first 20 characters)
• Chunk 2: "klmnopqrstuvwx" (starts with the last 10 characters of Chunk 1 and adds the next 10 characters)
• And so on...

This type of splitting is often used in natural language processing tasks to handle large text inputs or when overlapping context is important (like in transformers or language models).