Cumulative GPA Calculator

# weighted GPA calculator

import sys

# For color printing

GREEN = "\033[0;92m"

RED = "\033[1;31m"

RESET = "\033[0;0m"

blankline = ""

# from bulletin.georgetown.edu/regulations/studying/#QualityGrades

georgetown_qpoints = {

  "A": 4.00,

 "A-": 3.67,

 "B+": 3.33,

 "B": 3.00,

 "B-": 2.67,

 "C+": 2.33,

 "C": 2.00,

 "C-": 1.67,

 "D+": 1.33,

 "D": 1.00,

 "F": 0.00

}

# Welcome Message

print("To calculate cumulative GPA you will need the following information:")

print("• Current GPA\n• Current Total Credit Hours")

print("On your transcript these numbers are at the very bottom and labeled GPA and QHrs\n")

# Collect Current Data

print(f"{RED}Please enter the following as digits (e.g. 3 or 3.5){RESET}")

current_gpa = float(input("Current GPA? > "))

current_creds = float(input("Current Number of Credit Hours? > "))

current_grade_points = current_gpa * current_creds

num_new_classes = int(input("How many classes would you like to add? > "))

if num_new_classes == 0:

  print("Your GPA will not change if you do not add classes. Program Quitting...")

  sys.exit()

# Collect New Course Data

new_class_grades = []

new_class_credits = []

print(blankline)

for i in range(num_new_classes):

 new_class_grades.append(input(f"{RED}Letter grade for new class {i+1}? > {RESET}"))

 new_class_credits.append(float(input(f"{RED}Credit hours for new class {i+1}? > {RESET}")))

# Calculate Weighted Grades: (QP * CreditHrs)

weighted_grades = []

for grade, credits in zip(new_class_grades, new_class_credits):

 qpoints = georgetown_qpoints[grade.upper()]

 weighted_grades.append(credits * qpoints)

# Sum new Values

new_num_creds = current_creds + sum(new_class_credits)

new_num_grade_points = current_grade_points + sum(weighted_grades)

# Calculate new Cumulative GPA

new_weighted_gpa = new_num_grade_points / new_num_creds

# Print Output

print(f"\nYour old weighted GPA was: {current_gpa}")

amnt_change = new_weighted_gpa - current_gpa

if amnt_change > 0:

  print(f"Your new weighted GPA is: {GREEN}{new_weighted_gpa}{RESET}")

  print(f"That's a difference of {GREEN}{new_weighted_gpa - current_gpa}{RESET}")

elif amnt_change < 0:

  print(f"Your new weighted GPA is: {RED}{new_weighted_gpa}{RESET}")

  print(f"That's a difference of {RED}{new_weighted_gpa - current_gpa}{RESET}")

print("\n-----")

print("\nDetails:")

print(f"Your old stats:\n\tCredit Hours: {current_creds}",

 f"\n\tQuality Points: {current_grade_points}",

 f"\n\tGPA: {current_gpa} (Quality Points/ Credit Hours)\n")

print("You added the following Classes:")

for i, course in enumerate(list(zip(new_class_grades, new_class_credits))):

 grade, credit = course

 print(f"\tNew Class #{i+1}:")

 print(f"\t\tGrade: {grade.upper()}")

 print(f"\t\tQuality Points: {georgetown_qpoints[grade.upper()]}")

 print(f"\t\tCredits: {credit}")

print(f"\nYour new stats:\n\tCredit Hours: {new_num_creds}",

 f"\n\tQuality Points: {new_num_grade_points}",

 f"\n\tGPA: {new_weighted_gpa} (Quality Points/ Credit Hours)")

print("\nThanks for using this program! Goodbye\n\n")