w3resource

Python: Convert GPAs to letter grades


GPA to Letter Grade Conversion

Write a Python program to convert GPAs to letter grades according to the following table:

GPAsGrades
4.0: A+
3.7: A
3.4: A-
3.0: B+
2.7: B
2.4: B-
2.0: C+
1.7: C
1.4: C-
below:F
Input: 
[4.0, 3.5, 3.8]
Output: 
['A+', 'A-', 'A']
Input:  
[5.0, 4.7, 3.4, 3.0, 2.7, 2.4, 2.0, 1.7, 1.4, 0.0]
Output:
['A+', 'A+', 'A-', 'B+', 'B', 'B-', 'C+', 'C', 'C-', 'F']

Sample Solution:

Python Code:

# License: https://bit.ly/3oLErEI

# Define a function named 'test' that takes a list of GPAs as input
def test(nums):
    # Use list comprehension to convert GPAs to letter grades
    return ["A+" if grade >= 4.0
            else ("A" if grade >= 3.7
                  else ("A-" if grade >= 3.4
                        else ("B+" if grade >= 3.0
                              else ("B" if grade >= 2.7
                                    else ("B-" if grade >= 2.4
                                          else ("C+" if grade >= 2.0
                                                else ("C" if grade >= 1.7
                                                      else ("C-" if grade >= 1.4
                                                            else "F"))))))))
            for grade in nums]

# Example 1
nums1 = [4.0, 3.5, 3.8]
print("List of numbers:", nums1)
print("Convert GPAs to letter grades:")
print(test(nums1))

# Example 2
nums2 = [5.0, 4.7, 3.4, 3.0, 2.7, 2.4, 2.0, 1.7, 1.4, 0.0]
print("\nList of numbers:", nums2)
print("Convert GPAs to letter grades:")
print(test(nums2))

Sample Output:

List of numbers: [4.0, 3.5, 3.8]
Convert GPAs to letter grades:
['A+', 'A-', 'A']

List of numbers: [5.0, 4.7, 3.4, 3.0, 2.7, 2.4, 2.0, 1.7, 1.4, 0.0]
Convert GPAs to letter grades:
['A+', 'A+', 'A-', 'B+', 'B', 'B-', 'C+', 'C', 'C-', 'F']

Flowchart:

Flowchart: Python - Convert GPAs to letter grades.

For more Practice: Solve these Related Problems:

  • Write a Python program to map a list of GPA values to letter grades based on a given grading scale using conditional statements.
  • Write a Python program to use a dictionary to convert GPAs to letter grades from an input list.
  • Write a Python program to implement GPA-to-grade conversion using list comprehension and a helper function.
  • Write a Python program to validate GPA conversion by comparing each GPA against threshold values and returning the corresponding letter grade.

Go to:


Previous: Find the index of the largest prime in the list and the sum of its digits.
Next: Find the two closest distinct numbers in a given a list of numbers.

Python Code Editor :

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Follow us on Facebook and Twitter for latest update.