程序代写代做代考 Programming Exercise 3-1
Programming Exercise 3-1
Programming Exercise 13-5
import tkinter
class PropertyGUI:
def __init__(self):
# Create the main window
self.main_window = tkinter.Tk()
# Create frames
self.value_frame = tkinter.Frame(self.main_window)
self.assess_frame = tkinter.Frame(self.main_window)
self.tax_frame = tkinter.Frame(self.main_window)
self.bottom_frame = tkinter.Frame(self.main_window)
# Create the widgets for the value frame
self.value_label = tkinter.Label
(self.value_frame,
text = ‘Enter the property value: $’)
self.value_entry = tkinter.Entry(self.value_frame, width = 10)
# Pack the value frame widgets
self.value_label.pack(side = ‘left’)
self.value_entry.pack(side = ‘left’)
# Create the widgets for the assess frame
self.assess_results_label = tkinter.Label
(self.assess_frame,
text = ‘Assessment Value: ‘)
# Create a blank label for assessment value
self.assess = tkinter.StringVar()
self.assess_label = tkinter.Label(self.assess_frame,
textvariable= self.assess)
# Pack the assess frame widgets
self.assess_results_label.pack(side = ‘left’)
self.assess_label.pack(side = ‘left’)
# Create the widgets for the tax frame
self.tax_results_label = tkinter.Label
(self.tax_frame,
text = ‘Property Tax: ‘)
# Create a blank label for property tax value
self.tax = tkinter.StringVar()
self.tax_label = tkinter.Label(self.tax_frame,
textvariable= self.tax)
# Pack the tax frame widgets
self.tax_results_label.pack(side = ‘left’)
self.tax_label.pack(side = ‘left’)
# Create the two buttons in the bottom frame
self.display_button = tkinter.Button
(self.bottom_frame,
text = ‘Calculate’,
command = self.calculate)
self.quit_button = tkinter.Button
(self.bottom_frame,
text = ‘Quit’,
command = self.main_window.destroy)
# Pack the widgets in the bottom frame
self.display_button.pack(side=’left’)
self.quit_button.pack(side=’left’)
# Pack the frames
self.value_frame.pack()
self.assess_frame.pack()
self.tax_frame.pack()
self.bottom_frame.pack()
# Enter the tkinter main loop
tkinter.mainloop()
# Define the show_info function
def calculate(self):
# Get the values entered
self.value = float(self.value_entry.get())
# Calculate assessment
self.assessment = 0.60 * self.value
# Update the assessment label
self.assess.set(‘$’ + str(self.assessment))
# Calculate tax
self.property_tax = float(self.assessment) / 100 * 0.75
# Update the tax label
self.tax.set(‘$’ + str(self.property_tax))
# Create an instance of PropertyGUI
prop = PropertyGUI()
