count = int(30)
#This was made to calculate 30 students' marks, in order to change amount of input needed,change value in count.
print("Each will be entered one per line")
scoreList = []
nameList=[]
for i in range (1, count+1):
    nameList.append(input("Enter Name:"))
    while  True:
        if all(x.isalpha() or x.isspace() for x in nameList[i-1]):
            break
        del (nameList[i-1])
        nameList.append(input("Please enter letters only:"))
    while True:
        try:
            scoreList.append(int(input("Enter Computer Science Marks:")))
            while  (scoreList[i-1]) >100 or (scoreList[i-1])<0:
                del (scoreList[i-1])
                scoreList.append(int(input("Please Retry with a valid number:")))
            break
        except ValueError:
            print("PLease Retry with a Valid number:")
fmt = '{:<30}{:<20}'
print(fmt.format("Name Entered:","Comp Science Marks Entered:"))
for g, (name, score) in enumerate(zip(nameList, scoreList)):
    print(fmt.format(name, score))
print("Thank you the results are:")
mysum = sum(scoreList)
average = 1.0*mysum / count
print ("Total  : ",str(mysum))
print ("Average: ",str(average))
print ("Lowest : ",str(min(scoreList)))
print ("Highest: ",str(max(scoreList)))