mtresnik/pyast

A python implementation of an abstract syntax tree.

pyast

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A python implementation of an abstract syntax tree.

Sample Code

from pyast.parser import parse_operation
from pyast.constant import Constant
from pyast.variable import Variable

def parse_example():
    to_parse = "a * bc + 123 / sin(3.1415 * n) ^ log_(2, 8) - e"
    operation = parse_operation(to_parse)
    
    # replace variables
    evaluated = operation.evaluate(Variable("a"), Constant(5.0))
    
    # replace functions
    to_replace = parse_operation("sin(3.1415 * n)")
    evaluated2 = operation.evaluate(to_replace, Constant(2.0))

if __name__ == '__main__':
    parse_example()