Trivia2 Loop problem?

[nilamo]

   points = next_line(the_file)
 
   return category, question, answers, correct, explanation, int(points)

You're reading lines from a file, and converting those lines to an int. Based on the error, it looks like one of the lines is blank.

>>> int("5")
5
>>> int("")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: invalid literal for int() with base 10: ''

So either get rid of the blank line, or test to see if the line actually has contents before trying to cast it to an int, or use try/except to handle the error.