gaia-simpleeval 0.1.1

High-performance drop-in replacement for simpleeval using Rust

gaia-simpleeval

A high-performance drop-in replacement for simpleeval, implemented in Rust via PyO3.

Installation

pip install gaia-simpleeval

Usage

No code changes required. gaia-simpleeval automatically patches simpleeval at import time:

import gaia_simpleeval
import simpleeval
result = simpleeval.simple_eval("2 + 2 * 3")

Or use the gaia API directly:

import gaia_simpleeval as gse
result = gse.simple_eval("x + y", names={"x": 1, "y": 2})

Performance

More than 16x faster on average across complex real-world expressions, up to 25x on simple arithmetic:

Expression	simpleeval	gaia-simpleeval	Speedup
basic arithmetic	7.09 us	0.29 us	25x
pythagorean distance	11.34 us	0.56 us	20x
complex boolean	16.76 us	0.78 us	22x
price calculation	10.50 us	0.61 us	17x
grade evaluation	17.04 us	1.03 us	17x
deep arithmetic	17.63 us	1.02 us	17x
AVERAGE	11.72 us	0.72 us	17x

Compatibility

• Drop-in replacement - all simpleeval APIs work unchanged
• Supports Python 3.9 through 3.13
• Falls back to original simpleeval for advanced usage (custom operators, allowed_attrs)
• All 205 simpleeval compatibility tests pass

Security

• No access to builtins, imports, or file system
• Module objects in names raise FeatureNotAvailable
• Dunder functions raise FunctionNotDefined

License

MIT