embexpr 1.1.1

safe embedded python expression parser

safe embedded python expression parser (for mainly easy DSL or config file).

Getting Started

pip install embexpr

How to Use

from embexpr import Expr, ParseError

assert Expr('3 * 5')() == 15
assert Expr('"foo" + "bar"')() == "foobar"
assert Expr('len("example")')() == 7
assert Expr('s.startswith("prefix_")')(s="prefix_suffix") == True

try:
    Expr('eval("1")')()
except ParseError as e:
    print(e)

Reference

https://github.com/ansible/ansible/blob/devel/lib/ansible/template/safe_eval.py http://stackoverflow.com/questions/12523516/using-ast-and-whitelists-to-make-pythons-eval-safe

Author

Nao Yonashiro(@orisano)

License

MIT