[Tutor] Working with Data files & Lists

[JEAN MICHEL]

I'm a Python beginner trying write a program that reads outside txt files,
takes the data like the name and test grades of students then calculate the
average and also assigns a grade and writes the data into a new txt file.
I'm having difficulties writing the program so far I've been able to write
up half of the program but I am noticing there might be bugs. I've tried
running the program but every time I do, my program output is blank and
there is no error messages

I'm trying to write 4 Functions to extract data from files into Student
name, Score1, Score2 and Score 3 lists. then from there I'm trying to
create a function that will calculate the average test score using the
score1, score2, score3. After that I'm trying to create a function that
will to write to file using Student name, lettergrade list. Here is my
program so far.


def calcaverage(test1,test2,test3):
    for count in range(test1,test2,test3):
        curraverage=0
        curraverage=((test1[count]+ test2[count]+ test3[count])/3)
        currentaverage.append(curraverage)
        if curraverage>= 90:
            grade= "A"
            lettergrades.append(grade)
        elif curraverage >= 80 and curraverage < 90:
            grade= "B"
            lettergrades.append(grade)
        elif curraverage >= 70 and curraverage < 80:
            grade= "C"
            lettergrades.append(grade)
        elif curraverage < 70:
            grade= "F"
            lettergrades.append(grade)

name=[]
test1=[]
test2=[]
test3=[]
averagescore=[]
lettergrades=[]

with open ("period1.txt", 'r') as infile:
    for line in infile:
        values = line.split()
        name.append(values[0] + ','+ values[1])
        for line in infile:
            values = line.split()
            score1=float(values[2])
            test1.append(score1)
            for line in infile:
                values = line.split()
                score2=float(values[3])
                test2.append(score2)
                for line in inline:
                    values = line.split()
                    score3=float(values[4])
                    test3.append(score3)
averagescore=calcaverage(test1,test2,test3)

print(line)
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