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()