IntermediateChallenge 25 of 34

Expression calculator

Write evaluate(expr) that computes an arithmetic expression given as a , supporting + - * /, parentheses, decimal numbers and the usual precedence. Do not use eval().

Examples

evaluate("2 + 3 * 4") → 14
evaluate("(2 + 3) * 4") → 20
evaluate("10 / 4") → 2.5

Exercise

Expression calculator

5 checks

def evaluate(expr):
    ...


print(evaluate("2 + 3 * 4"), evaluate("(2 + 3) * 4"))

Output

Press Run to try your code, then Check answer to grade it.