This code is a command-line script to count and truncate text based on tokens using the tiktoken
library and the Click framework for handling command-line arguments.
Here's a breakdown of the code:
-
Import necessary libraries -
click
,sys
, andtiktoken
. -
Define the command-line interface (CLI) using the
@click.command()
decorator. -
Define the command-line options using the
@click.argument
and@click.option
decorators:prompt
: The text to process, passed as command-line arguments or from standard input.input
: File object to read input from.truncate
: Number of tokens to truncate the input.model
: The model to use for tokenization, defaulting to 'gpt-3.5-turbo'.output_tokens
: Flag to output token integers instead of the length of tokens.
-
Define the CLI function
cli()
, which takes the options as arguments. -
Inside the
cli()
function:- Check if the given model is valid, otherwise, raise an exception.
- Read input text either from the provided file or standard input.
- Call the relevant
tiktoken
functions to tokenize and possibly truncate the input text. - Print the output accordingly, either as token integers, truncated text, or the total number of tokens.
The function also includes a docstring with examples of how to use the command-line script for various operations, like reading input from a file, truncating tokens, and changing the tokenization model.