PyLFG is a web-based tool for teaching, learning, and researching Lexical Functional Grammar (LFG). This tool allows users to enter sentences, grammars, and lexicons in the LFG formalism, and see the resulting c-structure and f-structure parse trees.
The Input View is the main page of the PyLFG tool. Here, users can enter a sentence to be parsed, select a grammar to use for parsing, and choose which parse tree(s) they would like to see (c-structure, f-structure, or both). The input view also has a link to the Help View for more information.
The Results View displays the c-structure and/or f-structure parse tree(s) for the sentence and grammar selected in the Input View. This view also includes a link to the Input View for parsing another sentence.
The Help View provides information on how to use the PyLFG tool and what the different views and features are.