please code in pythonWrite a function called weighted_avg that takes a list of grades and a corresponding list of weights and returns the weighted average of the grades rounded to 1 decimal place.Your function should raise an exception with the message exactly as shown:a weight is less than 0 or greater than 100 (message: "A weight is less than 0 or greater than 100")the weights do not add to 100 (message: "Weights do not add to 100")the number of weights and grades are not equal (message: "The number of weight and grades are not equal")a grade is below 0 (grades above 100 would be considered extra credit and are acceptable) (message: "A grade is below 0")Do not print the exception just 'raise' it.Run your function on grades1 with weights1 and grades2 with weights2 and grades3 with weights3 and grades4 with weights4, defined below. Catch the errors generated in each case as an exception with the useful message for the user as defined above.Hint: The first 3 test cases should raise an exception!Example:weighted_avg(grades4, weights4)85.0

raise allows you to throw an exception at any time.

Answered: please code in python Write a…

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

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please code in python

Write a function called weighted_avg that takes a list of grades and a corresponding list of weights and returns the weighted average of the grades rounded to 1 decimal place.

Your function should raise an exception with the message exactly as shown:

a weight is less than 0 or greater than 100 (message: "A weight is less than 0 or greater than 100")
the weights do not add to 100 (message: "Weights do not add to 100")
the number of weights and grades are not equal (message: "The number of weight and grades are not equal")
a grade is below 0 (grades above 100 would be considered extra credit and are acceptable) (message: "A grade is below 0")

Do not print the exception just 'raise' it.

Run your function on grades1 with weights1 and grades2 with weights2 and grades3 with weights3 and grades4 with weights4, defined below. Catch the errors generated in each case as an exception with the useful message for the user as defined above.

Hint: The first 3 test cases should raise an exception!

Example:

weighted_avg(grades4, weights4)

85.0

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