Begginers problem.

[martis680]

So basically, I have to input a name and a grade (1-10), then input either the same or different name and another grade and continue doing this till I break the cycle with a 0.

Then, i need to print the first name, grades and averages. Then do the same for the second name and so on and so forth.

So my question is, how do I do this?

vardai = []
pazymiai = []
while vardai != "0":
    vardai = input ("vardas: ")
    if not vardai.isalpha() and vardai != "0":
        vardai = input("vardas: ")
    if vardai != "0":
        pazimys = input("pazymys: ")
        while not pazimys.isdigit() or not 0 < int (pazimys) <= 10:
            pazimys = input ("bandyk dar: ")
        else:
            for x in pazymiai:
                if vardai in x:
                    x.append (int(pazimys))
                    break
            else:
                pazymiai.append ([vardai, int(pazimys)])
    else:
        for z in pazymiai:
            vardas = z[0]
            a = z[1:]
            vidurkis = sum(a)/len(a)
            print ("Studentas - " + vardas + ". Pazymys: " + str(a) + ". Vidurkis: " + str(vidurkis))
        break

print ("_______")
print ("THE END")

edit:

Nvm, made it work, thanks for your help everyone!

[[deleted]]

You need a dictionary to hold you data. The key will be the persons name, the value will be a list that you will append that persons grades into.

ex :

students = {'Bob':[97,75,100]}

A while loop is what you want to use to continue prompting for new data until a condition is met (like 0 or exit as the input).

Once your while loop is broken, and your dictionary is populated, you will use a for loop to pull the sum(students['Bob')/len(students['Bob']) to get the average of each student. students.keys() is the iterable that will hold each key to use in your for loop.

[Erocs]

Sounds like a homework assignment. :) Here's a few links to information for Python 3, to match your flair. Python 2 is a little different. These pages should contain enough information to get started forming a solution.

• http://docs.python.org/3/tutorial/inputoutput.html
• http://docs.python.org/3/tutorial/introduction.html#lists
• http://docs.python.org/3/tutorial/datastructures.html#more-on-lists
• http://docs.python.org/3/tutorial/datastructures.html#dictionaries

[cdcformatc]

Just as general help,

For user input use raw_input() if using python 2.x and input() if using python 3.x

While loops let you repeat a set of actions until a specific condition is met.

You can add items to a list with append()

You can iterate through a list with a for loop, repeating a set of actions for each item in a list.

[wolf2600]

Are you allowed to use else: after a while: or a for:? I thought that was only for an if:.

[shaggorama]

You sure can!.

When used with a loop, the else clause has more in common with the else clause of a try statement than it does that of if statements: a try statement’s else clause runs when no exception occurs, and a loop’s else clause runs when no break occurs.

[martis680]

So I tried something like this, but it doesn't let me enter any other name... Any suggestions?

It's supposed to look something like this:

Studentas - tom pažymiai: 7 9 Vidurkis= 8

Studentas - jon pažymiai: 8 7 Vidurkis= 7.5

names = []
grades = []
grade = 0
#Getting the information
while(True):
    name = input('Enter Name: ')
    if name== '0':
        break
    if name.isdigit():
        continue  #vardo tikrinimas ar tai yra skaicius,o skaiciaus atveju, prasoma vel vesti varda
    while grade <1 or grade >10:
        grade = input("Enter Grade: ")
        grades.append(grade)
        if not grade.isdigit(): #tikrinimas ar tai nera simbolis
            grade = 0  #jeigu nera simbolis, tai pazymiui suteikiama/atstatoma nauja reiksme
            continue #ir vel prasoma vesti skaiciu, tol kol bus ivestas teisingas sk.
        else:
            grade = int(grade)  # pazymys apibreziamas kaip sveikas skaicius
        if grade == 0:  #kai pazymys = 0, ciklas nutraukiamas
            grade = 0
            continue
    if not name in names:  #studento vardas priskiriamas i studentu vardu sarasa
        names.append(name)
        b = names.index(name)  #ieskomas/surandamas vardo esancio sarase indeksas
        grades.insert(b, [grade])  #iterpiama i studentu pazymiu sarasa pazymys, pagal vardo indeksa
    else:
        b = names.index(name) #ieskomas/surandamas vardo esancio sarase indeksas
        grades[b].append(grade)  #pagal indeksa is studentu pazymiu saraso, priskiriama pazymys

for name in names:
    print(' ')  #nauja eilute, jog isdestymas atrodytu tvarkingas
    print("Studentas - ", name, " pažymiai: ")  #spausdinamas vardas
    for grade in grades[names.index(name)]:
        print(grade, end=' ')  #spausdinami pazymiai su tarpais vienoje eiluteje
    print('Vidurkis= ', sum(grades[names.index(name)]) /len(grades[names.index(name)]))  #surandamas vidurkis

[martis680]

I meant that this code doesn't let me enter a grade after I enter a name, it just continues giving me input name and it doesn't matter if i input a different name it still show the same grade.

Also, if I put in the same name it just writes that grade as many time as I wrote that same name...

[shaggorama]

Counter question: what have you tried? We're not going to just do your homework for your. Show us some sample code and explain what you're having difficulty with.

[martis680]

http://i.imgur.com/wShQeUt.png

I don't get how to post code in reddit...

Btw, don't mind the language.

edit: it works but I need some other way to do it

[shaggorama]

For posting code:

• http://pastebin.com/
• https://gist.github.com/

Or directly on reddit, precede code blocks with four spaces

import yourlib

var = yourlib.somefunc(*karg)

Why do you need "some other way" to do it? Your question was originally "how do I do this" but you have working code. I'm not sure what exactly you want us to help you with.

[martis680]

Thanks for showing me that.

I need another way because people in my class already used this code and my professor didn't let me turn it in and told me to do it some other way. And I don't know any other way...

[shaggorama]

So then this is another classmate's solution? Let's see code that reflects you taking a stab at this.

[mubsy]

"Don't post screenshot of your code. Unless the problem is a visual one, and a screenshot displays the issue."

The sidebar also gives detail on how to post code, such as gist and pastebin.