filecopy.py

import sys

def computeModeratedMarks(file1, file2, addPercent):

    '''
    Objective: To compute moderated marks of students
    Input Parameters: file1, file2: file names - string values
    addPercent – numeric value
    Return Value: None
    Final outcome: A new file – file2 of moderated marks is produced
    '''

    try:
        fIn = open(file1, 'r')
        fOut = open(file2,'w')
    except IOError:
        print("Problem in opening the file")
        sys.exit()
        
    line = fIn.readline()
    
    while(line != ''):
        sList = line.split(',')
        try:
            rollNo = int(sList[0])
            name = sList[1]
            marks = int(sList[2])
        except IndexError:
            print("Undefined Index")
            sys.exit()
        except (ValueError, TypeError):
            print("Unsuccessful conversion to int")
            sys.exit()

        maxMarks= 100
        moderatedMarks = int(marks) + ((addPercent * maxMarks)/100)
        if moderatedMarks > 100:
            moderatedMarks = 100

        fOut.write(str(rollNo) + ',' + name + ',' +str(moderatedMarks) + '\n')

        line = fIn.readline()
        
    fIn.close()
    fOut.close()

def main():

    '''
    Objective: To compute moderated marks based on user input
    Input Parameter: None
    Return Value: None
    '''

    import sys
    sys.path.append("/home/administrator")

    file1 = input('Enter name of file containing marks:')

    file2 = input('Enter output file for moderated marks:')

    addPercent = int(input('Enter moderation percentage:'))
    
    computeModeratedMarks(file1, file2, addPercent)

    

if __name__=='__main__':
    main()