Program:

# import tkinter to create windows app
import tkinter as tk

# Create dictionary to store the prices of each service
service_prices = {
    "Oil change": 26.00,
    "Lube job": 18.00,
    "Radiator flush": 30.00,
    "Transmission flush": 80.00,
    "Inspection": 15.00,
    "Muffler replacement": 100.00,
    "Tire rotation": 20.00
}

# Create a function named calculate_total().
# This function helps to calcualte the total price.
def calculate_total():
    total = 0.00
    for service, price in service_prices.items():
        if service_vars[service].get():
            total += price

    total_label.config(text=f"Total Charges: ${total:.2f}")

# Create the main window
root = tk.Tk()
root.title("Joe's Automotive")
root.geometry("350x300")


# Create variables to store the check button selections
service_vars = {}
for service in service_prices:
    service_vars[service] = tk.BooleanVar()

# Create check buttons for each service
for i, (service, price) in enumerate(service_prices.items()):
    tk.Checkbutton(root, text=f"{service} - ${price:.2f}", variable=service_vars[service]).grid(row=i, sticky="w")

# Create the "Calculate Total" button
calculate_button = tk.Button(root, text="Calculate Total", command=calculate_total)
calculate_button.grid(row=len(service_prices), pady=10)

# Create a label to display the total charges
total_label = tk.Label(root, text="Total Charges: $0.00", font=("Arial", 12, "bold"))
total_label.grid(row=len(service_prices) + 1, pady=10)

root.mainloop()

Sample output: