logics-py 0.0.9

Logics is a user-friendly formula language with a subset of Python''s expression syntax

Logics

A tiny, sandboxed, secure and extendable formula language with a flavor of Python.

About

Logics is a simple expression language with the goal to provide equal syntax and semantics for different runtime contexts and host languages.

• logics-js is a pure JavaScript implementation of Logics provided as npm-package.
• logics-py is a pure Python implementation of Logics provided as PyPI-package.

Both packages are under recent development and not stable right now. They are maintained in separate version numbers.

Features

• Secure, native, running in a sandboxed environment apart from the host language
  • Disallows variable assignment, except in comprehensions
  • logics-js: Implementation in JavaScript
  • logics-py: Implementation in Python
• Python-inspired syntax and semantics
  • Make use of all standard operators
    • Unary +, -, ~, not
    • Binary +, *, -, /, //, **
    • Comparison ==, !=, <>, <, <=, >, >=, in, not in
    • Logical and, or
    • Conditions y if x else z
    • Comprehensions [x for x in y if z]
  • Slices x[:]
  • Attribute access x[y]
  • # comments in separate lines
  • Dedicated Value object abstraction of native types for
    • True, False, None
    • int, float, str
    • list for arrays
    • dict for structured objects
• Provides a set of functions that can be used in expressions
• Extendable to custom functions