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[[python_club|About the Club]]\\

==== Python Club Topics - Exercise: GPA to grade letter conversion ====

==== Exercise: GPA to grade letter conversion ====
**Output:** Display grade letters based upon input from the user, according to the table below.\\

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

^  GPAs	  ^  Grades  ^
|  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  |\\

What you learn from the example:
  - Get input from a user
  - Manipulate strings
  - Use conditionals

==== Solution 1 ====
<codedoc toggle code:python>
# 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))
</codedoc>
\\
==== Solution 2 ====
<codedoc toggle code:python>
# License: https://bit.ly/3oLErEI ==> Modified version of Solution 1 that's easier to read/understand


# 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
  for grade in nums:
    if grade >= 4.0:
      return 'A+'
    elif grade >= 3.7:
      return 'A'
    elif grade >= 3.4:
       return 'A-'
    elif grade >= 3.0:
       return 'B+'
    elif grade >= 2.7:
       return 'B'
    elif grade >= 2.4:
       return 'B-'
    elif grade >= 2.0:
       return 'C+'
    elif grade >= 1.7:
       return 'C'
    elif grade >= 1.4:
       return 'C-'
    else:
       return 'F'

# 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))
</codedoc>