python中的前缀表示法解析

def evaluate_prefix_expression(expression):
    stack = []
    for token in reversed(expression):
        if token.isdigit():
            stack.append(int(token))
        else:
            operand2 = stack.pop()
            operand1 = stack.pop()
            if token == '+':
                result = operand1 + operand2
            elif token == '-':
                result = operand1 - operand2
            elif token == '*':
                result = operand1 * operand2
            elif token == '/':
                result = operand1 / operand2
            stack.append(result)
    return stack.pop()

expression = ['*', '+', '5', '3', '2']

result = evaluate_prefix_expression(expression)
print(result)  # 输出：11