2. evaluate Takes a valid bimmy++ expression and evaluates it! (you only have to handle valid bimmy++ expressions here -- they have already been validated by validate, above) If the expression is an integer, just return that integer! If the expression describes a computation (ie, it is a list), then recursively evaluate its children (the operands for the computation). "add", "sub", and "mul" are pretty straightforward, but some care needs to be taken with "div". Make sure that "div" does integer division (use Python's // operator), and if you are about to divide by 0, raise a ValueError with the message "divide by zero".

2. evaluate Takes a valid bimmy++ expression and evaluates it! (you only have to handle valid bimmy++ expressions here -- they have already been validated by validate, above) If the expression is an integer, just return that integer! If the expression describes a computation (ie, it is a list), then recursively evaluate its children (the operands for the computation). "add", "sub", and "mul" are pretty straightforward, but some care needs to be taken with "div". Make sure that "div" does integer division (use Python's // operator), and if you are about to divide by 0, raise a ValueError with the message "divide by zero".

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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