boolean_py_parse_expression_and_evaluate_with_substitution.py

1import boolean
2
3# Initialize the boolean engine
4algebra = boolean.BooleanAlgebra()
5
6# Parse a boolean expression
7expression = algebra.parse('apple AND (orange OR NOT apple)')
8
9# List the symbols (variables) found in the expression
10# Result: [Symbol('apple'), Symbol('orange')]
11print(f"Symbols: {expression.symbols}")
12
13# Evaluate the expression with specific values
14# Result: True
15result = expression.subs({
16    algebra.Symbol('apple'): algebra.TRUE,
17    algebra.Symbol('orange'): algebra.TRUE
18})
19
20print(f"Result: {result}")