Simple temperature converter (celsius to fahrenheit), with a GUI, using graphics.py by John Zelle

temp_converter_gui.py

"""
Simple temperature converter (celsius to fahrenheit), with a GUI.
Adapted from graphics.py by John Zelle (https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-189-a-gentle-introduction-to-programming-using-python-january-iap-2011/assignments/graphics.py)
"""
# Make sure to place this file in the same place as graphics.py (from the above source)
from graphics import *

def main():
    win = GraphWin("Celsius Converter", 400, 500)
    win.setCoords(0.0, 0.0, 3.0, 4.0)
    # Draw the Interface
    Text(Point(1, 3), " Celsius Converter: ").draw(win)
    Text(Point(1, 1), "Fahrenheit Temperature:").draw(win)
    input = Entry(Point(2, 3), 5)
    input.setText("0.0")
    input.draw(win)
    output = Text(Point(2, 1), "")
    output.draw(win)
    button = Text(Point(1.5, 2.0), "Convert It")
    button.draw(win)
    rectangle = Rectangle(Point(1, 1.5), Point(2, 2.5))
    rectangle.setWidth(5)
    rectangle.draw(win)

    # Listen for Mouse Click Event
    win.getMouse()

    # Convert the Input
    celsius = eval(input.getText())
    fahrenheit = 9.0/5.0 * celsius + 32
        
    # Display the output and change button
    output.setText(fahrenheit)
    rectangle.setOutline("cyan")
    button.setText("Quit")

    # Display the output and exit
    win.getMouse()
    win.close()
# Now call (or execute) the function:
main()