Write a Python script that will continually prompt for a string in the following format and do the necessary calculations based on the given operator using a separate function for each operator. It should be able to perform addition, subtraction, multiplication, division, exponentiation (where first number is base and second is power), modulo.

Input string	Expected output of script
Enter calculation: add 1 2 3 4 Enter calculation: sub 20 30 100 50 Enter calculation: mul 60 7 Enter calculation: div 10 5 Enter calculation: exp 3 2 Enter calculation: mod 3 12	Sum: 10 Difference: -160 Product: 420 Quotient: 2 Power: 9 Modulus: 3

Write a Python script that will simulate a dice roll. It should prompt for a number of sides and then return a random number that might be rolled with a die of that number of sides. Assume a standard die that starts at 1 and goes to the given number of sides.

Input string	Expected output of script
Enter number of sides: 4 Enter number of sides: 6 Enter number of sides: 20	Roll: 2 Roll: 4 Roll: 11

Consider the following list of student grades. Write a script that will open the file and calculate the average for each student and the grade that the student would receive based on the grade scale for this course found in the syllabus. It should save the output to a file named out604.txt

Input file (lab0604.csv)	Expected output file (out604.txt)
name,hw1,h2,h3,lb1,lb2,lb3,ec,pt Andrew,69,52,32,83,22,33,77,34 Brandon,87,80,79,85,99,92,77,80 Chelsey,98,97,91,92,93,99,91,94 Deborah,51,61,28,58,34,53,74,39 Erik,80,88,97,88,102,106,86,94 Arielle,73,73,88,79,73,80,90,82 Shaun,61,76,77,69,71,80,74,67 Ninette,88,67,28,42,51,66,57,43 Nguyen,5,23,93,60,31,25,65,23	Name grade letter Andrew 50.25 E Brandon 84.88 B Chelsey 94.38 A Deborah 49.75 E Erik 92.62 A- Arielle 79.75 C+ Shaun 71.88 C Ninette 55.25 E Nguyen 40.62 E