import random; #importing random module aGrades=[]; #list to store grades of all tests for i in range(0,7): aGrades.append(random.randrange(0,100)); #generating 7 random values for tests examCount=len(aGrades)-1; #examCount is a variable to store count of all exams except last exam totalPoints=sum(aGrades)-aGrades[len(aGrades)-1]; #totalPoints is a variable to store sum of all scores excluding last exam testAverage=(totalPoints)/examCount; #testAverage is a variable used to store the average of scores except last exam finalAverage= (testAverage*0.6)+(aGrades[len(aGrades)-1]*0.4); #finalAverage is a variable to store weighted average of the tests print(aGrades); #printing list of grades print(testAverage); #printing test average print(finalAverage); #printing final average How do i rewrite the Grades List programs above using a loop instead of referencing the elements of the lists by index.

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
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import random; #importing random module

aGrades=[]; #list to store grades of all tests

for i in range(0,7):
aGrades.append(random.randrange(0,100)); #generating 7 random values for tests

examCount=len(aGrades)-1; #examCount is a variable to store count of all exams except last exam

totalPoints=sum(aGrades)-aGrades[len(aGrades)-1]; #totalPoints is a variable to store sum of all scores excluding last exam

testAverage=(totalPoints)/examCount; #testAverage is a variable used to store the average of scores except last exam

finalAverage= (testAverage*0.6)+(aGrades[len(aGrades)-1]*0.4); #finalAverage is a variable to store weighted average of the tests

print(aGrades); #printing list of grades
print(testAverage); #printing test average
print(finalAverage); #printing final average

How do i rewrite the Grades List programs above using a loop instead of referencing the elements of the lists by index.  

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