程序代写代做代考 Programming Exercise 3-1
Programming Exercise 3-1
Programming Exercise 13-4
import tkinter
class CelsiusGUI:
def __init__(self):
# Create the main window
self.main_window = tkinter.Tk()
# Create frames
self.top_frame = tkinter.Frame(self.main_window)
self.mid_frame = tkinter.Frame(self.main_window)
self.bottom_frame = tkinter.Frame(self.main_window)
# Create the widgets for the top frame
self.celsius_label = tkinter.Label
(self.top_frame,
text = ‘Enter the Celsius temperature:’)
self.celsius_entry = tkinter.Entry(self.top_frame, width = 10)
# Pack the top frame widgets
self.celsius_label.pack(side = ‘left’)
self.celsius_entry.pack(side = ‘left’)
# Create the widgets for the middle frame
self.results_label = tkinter.Label
(self.mid_frame,
text = ‘Fahrenheit temperature: ‘)
# Create a blank label
self.fahr = tkinter.StringVar()
self.fahrenheit_label = tkinter.Label
(self.mid_frame, textvariable= self.fahr)
# Pack the middle frame widgets
self.results_label.pack(side = ‘left’)
self.fahrenheit_label.pack(side = ‘left’)
# Create the two buttons in the bottom frame
self.fahrenheit_button = tkinter.Button
(self.bottom_frame,
text = ‘Convert to Fahrenheit’,
command = self.convert)
self.quit_button = tkinter.Button
(self.bottom_frame,
text = ‘Quit’,
command = self.main_window.destroy)
# Pack the widgets in the bottom frame
self.fahrenheit_button.pack(side=’left’)
self.quit_button.pack(side=’left’)
# Pack the frames
self.top_frame.pack()
self.mid_frame.pack()
self.bottom_frame.pack()
# Enter the tkinter main loop
tkinter.mainloop()
# Define the show_info function
def convert(self):
# Get the values entered
self.celsius = float(self.celsius_entry.get())
# Calculate fahrenheit
self.fahrenheit = 9.0 /5.0 * float(self.celsius) + 32
# Update the fahrenheit_label
self.fahr.set(self.fahrenheit)
# Create an instance of MilesGUI
celsius = CelsiusGUI()
