Python: Convert GPAs to letter grades
Python Programming Puzzles: Exercise-77 with Solution
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 |
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
def test(nums):
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]
nums = [4.0, 3.5, 3.8]
print("List of numbers:",nums)
print("Convert GPAs to letter grades:")
print(test(nums))
nums = [5.0, 4.7, 3.4, 3.0, 2.7, 2.4, 2.0, 1.7, 1.4, 0.0]
print("\nList of numbers:",nums)
print("Convert GPAs to letter grades:")
print(test(nums))
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']
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Python: Tips of the Day
Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
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