Student grades manager python text file how to#
Student grades manager python text file code#

# Dirk Dirksen has an average grade of 4.6 # Chris Cohen has an average grade of 7.3 # Bea de Bruin has an average grade of 7.2 Print(''.format(name, average))Īnd running it on your data: file =open('grades1.in.txt').read().split(' ')Īverages(line) # call the function on each line Name_numbers = line.split('_') # now we split our line Rewriting it into something that works: def averages(line): That said, I couldn't get this line to work for me, so I went with something I know better. There are some cool newer ways to print formatted text, one of which I will show in the following, but if you are supposed to use this way then I say stick with it. print ('% has an average grade of %.1') %(name, averages) To take the average, you just want to divide this sum by the length of the list, which you can get with len(my_list).

You can actually just call sum(my_list) on any list (actually any iterable) my_list to get the sum of all of the values in the list. Sum is a keyword in Python, and we never want to assign something to a keyword, so something's wrong here.

Numbers = split(' ') # already talked about this This reads something like: first split the last element of the line at spaces to get (note they're all strings), and then convert each value in that list into a floating-point number, and finally save this list of floats as numbers. You can do this pretty easily with a list comprehension (best way to loop in Python) like this: numbers =. The first element ( split_line) is the name, and the last element ( split_line) are the numbers, but you still have to split those out too! To get a list of numbers, you actually have to split it and then interpret each string as a number. When you split your first line, you get something like: split_line = You want to look at the numbers in each line after you split it with scores.split('_'), and for that we need to index the result of the split. I think this is where you first go wrong. Keep in mind your file is a list, where each entry in the list is one line of your input file, so this numbers in file doesn't really make sense.

Works fine to split the name part of the line from the scores part of the line, so we'll keep it, but what are you doing with it here? Right now you are overwriting name_numbers with each new line in the file and never doing anything with it, so we are going to move this into your function and make better use of it. Note that if you have empty lines in your input, some of the lines in this list will be empty strings. Your file is going to be a list of strings, where each string is a line in your input file. First let's look at yours one part at a time.

Student grades manager python text file how to#

I will keep this as close to your version as I can so that you see how to get from where you are to a working example without needing a ton of stuff you might not have learned yet.

Student grades manager python text file code#

This maybe should be migrated to Code Review, but I'll write my answer here for now. There's a few things wrong with your code. Where does it go wrong? What am I missing? Am I not splitting the right way? Print ('% has an average grade of %.1') %(name, averages) This is my python code so far: NUMBER_OF_GRADES = 3įile =open('grades1.in.txt').read().split(' ') Your assignment is to make the report for the geography course of group 2b, which should look like this: Report for group 2b If somebody missed a test, the grade in the list is a 1. The lowest grade possible is a 1, the highest a 10. These are succeeded by the grades for the tests, for example: Anne Adema_6.5 5.5 4.5 On each line of the input you can find the name of the student, followed by one or more under scores (’_’). There have been three tests of which the grades will be included in the half-yearly report that is given to the students before the Christmas break. In the input file, grades are listed for the geography tests of group 2b. For my beginners course python I got the following assignment: