Determine if a student has passed based on input from a file

We have the following format for a text file:

23 2.5 3.0 1.1
34 2.0 1.0 1.0
17 1.0 1.0 1.1
450 4.0 2.1 2.2
55 4.0 4.0 2.0

In each line we have:

• the student’s file number, which is an integer
• the grade of the first partial, a real value
• the grade of the second partial, a real value
• the attendance grade, a real value

Write a function calculate_notes in Python that receives as a parameter the name of a text file that has the format as thenotes.txt, and writes on the screen the total number of students and how many of them have passed. A student will be deemed to have passed when the sum of his three grades is greater than or equal to 5.

>>> calculate_grades("threegrades.txt")
    number of students: 5
    number of students who have passed: 3
>>>