S-expression toolkit for Python

sexpr is small and compact toolkit for working with s-expressions in Python. It provides:

1. Meta-syntax notation for grammar definition in YAML (similar to EBNF).
2. Validation of s-expressions against defined grammar.
3. Small and simple manipulation and rewriting framework.

Want to get a feel for it? Check out README on GitHub. And when you’re ready, have a look at the documentation.

Documentation

Those articles will guide you through all of the library’s usage patterns.

• Quickstart
  • Install from PyPI
  • Install from git via pip
  • Install from source
• Defining Grammar
  • Basic notions
  • Grammar in YAML
  • Terminal Rules
• Loading Grammar
  • Loading from YAML
  • Loading from a string
  • Loading from a dictionary
• Verifing S-expressions
• Manipulating S-expressions
• Utilities

API Reference

If you are looking for information on a specific function, class, or method, this part of the documentation is for you.

• Grammar
• Loaders
• Matcher
• Sexpr
• Utils
• Yaml
• Types
  • Alternative
  • Multiple
  • Non-Terminal
  • Reference
  • Rule
  • Sequence
  • Terminal

Indices and tables

• Index
• Module Index
• Search Page