title: ValueError: need more than 1 value to unpack
body: <p>Ok, i know this topic has been addressed several times, but none of what i seen is helping me. I'm getting the error in the title and i'm not sure how to fix the error. Here is my code:</p>
  
  <pre><code>def loadRecords():
      f = open("stu.txt", "r")
      students = f.readlines()
      f.close()
      return students
  
  def addStudent():
      n = input("Enter student's name: ")
      ex1 = input("Enter Exam 1 grade: ")
      ex2 = input("Enter Exam 2 grade: ")
      ex3 = input("Enter Exam 3 grade: ")
      return n + " " + ex1 + " " + ex2 + " " + ex3 + "\n"
  
  def displayStudents(students):
      for record in students:
          n, ex1, ex2, ex3 = record.split(",")
          ex1 = int(ex1)
          ex2 = int(ex2)
          ex3 = int(ex3)
          print("%-10s %5s    %5s    %5s" % (n, ex1, ex2, ex3))
  
  def displayAvg(students):
      n = 1
      for record in students:
          n, ex1, ex2, ex3 = record.split(",")
          ex1 = int(ex1)
          ex2 = int(ex2)
          ex3 = int(ex3)
          avg = (ex1 + ex2 + ex3) / 3
          print("%-10s %5s" % (n, round(avg, 1)))
      n += 1
  
  def saveRecords(students):
      f = open("stu.txt", "w")
      f.writelines(students)
      f.close
  
  def main():
      students = loadRecords()
  
      while True:
          print("""                         
   Program Options. 
      1.) Display all contacts 
      2.) Create new contact
      3.) Display Averages
      4.) Save and exit 
      """)
          option = input("Enter 1, 2, or 3: ")
          print()
  
          if option == "1":
              displayStudents(students)
          elif option == "2":
              newRecord = addStudent()
              students.append(newRecord)
          elif option == "3":
              displayAvg(students)
          elif option == "4":
              saveRecords(students)
              break
          else:
              print("Not happening")
  
  main()
  </code></pre>
  
  <p>Here is the error recieved:</p>
  
  <pre><code>Traceback (most recent call last):
    File "C:/Python33/Program 4/pro4.py", line 65, in &lt;module&gt;
      main()
    File "C:/Python33/Program 4/pro4.py", line 53, in main
      displayStudents(students)
    File "C:/Python33/Program 4/pro4.py", line 16, in displayStudents
      n, ex1, ex2, ex3 = record.split(",")
  ValueError: need more than 1 value to unpack
  </code></pre>
  
  <p>Here is the file I am using, use notepad if you want to run the code.</p>
  
  <pre><code>sam wilson,98,80,73
  sue green,92,98,74
  sue adams,89,89,92
  ron harris,90,87,100
  linda tyler,76,72,88
  dave smith,72,91,75
  steve davis,88,92,84
  </code></pre>