I want to check is students are failing in a course, if none are, print “no students failing”-CodePudding

I have a list with students in a course and their grades. I want to check if there are any failing the course (their average being less than 60%).

I want to run a for loop, and if the condition isn’t met by the end of the loop (student’s average is less than 60%), print “No failing students”. However, I want to print all the students that are failing, if there are some. So I need to continue the loop without it breaking when it sees the first failing student.

This is my code. I read online to use the break function with else outside the loop, but like that, the loop stops when it sees the first failing student.

slist = [[“Andrew”, 29, 67, 58], [“Charles”, 98, 76, 85], [“Penny”, 63, 45, 23]]
for students in slist:
  total = 0
  count = 0
  for grade in students[1:len(students)]:
    grade = int(grade)
    total  = grade
    count  = 1
  average = total/count
  student = students[0]
  if average < 60:
      print(f"{student} is failing with {average}%!")
      break
else:
  print(“No failing students!”)

The output ends up being:

output:
Andrew is failing with 51.333%!

Also, whenever I remove the break statement, it prints all the failing students, and that there are no failing students:

output:
Andrew is failing with 51.333%!
Penny is failing with 43.666%!
No failing students!

I want the output to be:

output:
Andrew is failing with 51.333%!
Penny is failing with 43.666%!

And when the condition isn’t met and no students are failing:

output:
No failing students!

CodePudding user response：

sList = [["Andrew", 29, 67, 58], ["Charles", 98, 76, 85], ["Penny", 63, 45, 23]]
fail = []

for name, *grades in sList:
    grade = sum(grades) / 3

    if grade < 60:
        fail.append([name, grade])
        print(f"{name} is failing with {grade:.2f}%!")



if len(fail) == 0:
    print('no student is failing')
else:
   print(fail)

which will output:

Andrew is failing with 51.34%!
Penny is failing with 43.67%!
[['Andrew', 51.333333333333334], ['Penny', 43.666666666666664]]

and will output:

no student is failing

if no students are failing.

Hopefully this helps and is what you're wanting!

CodePudding user response：

Keeping with what you want your output to be, and with low modification of your code:

slist = [['Andrew', 29, 67, 58], ['Charles', 98, 76, 85], ['Penny', 63, 45, 23]]
flist = []
for students in slist:
  total = 0
  count = 0
  for grade in students[1:len(students)]:
    grade = int(grade)
    total  = grade
    count  = 1
  average = total/count
  student = students[0]
  if average < 60:
      print(f"{student} is failing with {average}%!")
      flist.append(students)
if flist == []:
  print('No failing students!')