🔥 Python Student Grade Calculator (GUI) – Modern & Stylish Application with Full Code

Demo :

Click Video 👇👇👇

Description:

Want to build a modern & stylish Python Student Grade Calculator with an interactive GUI? 🚀 In this post, we provide:
✅ Full Python Code for a Grade Calculator
✅ Modern GUI Design (Tkinter-based)
✅ Step-by-step guide to implement
✅ YouTube demo video for better understanding

Code :

import tkinter as tk

from tkinter import messagebox

# Function to calculate grade

def calculate_grade():

    try:

        marks = [float(entry.get()) for entry in entries]

        total_marks = sum(marks)

        percentage = (total_marks / (len(marks) * 100)) * 100

        if percentage >= 90:

            grade, color, msg = "A+", "#28a745", "🎉 Excellent Performance! Keep it up!"

        elif percentage >= 80:

            grade, color, msg = "A", "#17a2b8", "👍 Great Job! You did well!"

        elif percentage >= 70:

            grade, color, msg = "B", "#ffc107", "😊 Good! But there's room for improvement."

        elif percentage >= 60:

            grade, color, msg = "C", "#fd7e14", "📚 Study harder to improve your score."

        elif percentage >= 50:

            grade, color, msg = "D", "#dc3545", "⚠️ Work harder! You need to improve."

        else:

            grade, color, msg = "F", "#6c757d", "❌ You have failed. Don't give up, try again!"

        # Update result label

        result_label.config(text=f"Total Marks: {total_marks} / {len(marks) * 100}\nPercentage: {percentage:.2f}%\nGrade: {grade}", fg=color)

        messagebox.showinfo("Performance Summary", msg)

    except ValueError:

        messagebox.showerror("Input Error", "Please enter valid numeric marks!")

# GUI Setup

root = tk.Tk()

root.title("🎓 Student Grade Calculator")

root.geometry("400x500")

root.configure(bg="#2c3e50")

# Heading

tk.Label(root, text="📊 Student Grade Calculator", font=("Arial", 16, "bold"), bg="#2c3e50", fg="white").pack(pady=10)

# Input Fields

entries = []

for i in range(5):  # Default 5 subjects

    frame = tk.Frame(root, bg="#2c3e50")

    frame.pack(pady=5)

    

    tk.Label(frame, text=f"Subject {i+1} Marks:", font=("Arial", 12), bg="#2c3e50", fg="white").pack(side=tk.LEFT)

    entry = tk.Entry(frame, font=("Arial", 12), width=10)

    entry.pack(side=tk.RIGHT, padx=10)

    entries.append(entry)

# Calculate Button

calculate_btn = tk.Button(root, text="Calculate Grade", font=("Arial", 14, "bold"), bg="#1abc9c", fg="white", padx=20, pady=5, command=calculate_grade)

calculate_btn.pack(pady=15)

# Result Label

result_label = tk.Label(root, text="", font=("Arial", 14, "bold"), bg="#2c3e50", fg="white")

result_label.pack(pady=10)

# Run the App

root.mainloop()