TextFSM

TextFSM is a Python module that implements a template-based state machine designed to parse semi-formatted text. It is primarily used to programmatically extract structured data from unstructured or semi-structured text, such as command-line interface (CLI) outputs from networking devices.

The engine operates by taking two inputs:

1. A template file: A file defining the state machine logic and data structures for a specific text format.
2. Text input: The raw text (e.g., CLI responses) to be parsed.

It returns a list of records containing the parsed data. You can use different templates on the same input data to generate different structured views or tables.