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 -
Define the command-line interface (CLI) using the
Define the command-line options using the
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.
- 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
tiktokenfunctions 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.