1. import tkinter as tk 2. from tkinter import ttk 3. class TipCalcFrame(ttk.Frame): 4. def __init__(self, parent): 5. ttk.Frame.__init__(self, parent, padding="20 20 20 20") 6. self.pack() 7. self.mealCost = tk.StringVar() 8. self.tipPercent = tk.StringVar() 9. self.tipAmount = tk.StringVar() 10. ttk.Label(self, text="Cost of your meal:").grid( column=0, row=0, sticky=tk.E) 11. ttk.Entry(self, width=30, textvariable=self.mealCost).grid( column=1, row=0) 12. ttk.Label(self, text="Percent to leave as a tip:").grid( column=0, row=1, sticky=tk.E) 13. ttk.Entry(self, width=30, textvariable=self.tipPercent).grid( column=1, row=1) 14. ttk.Label(self, text="Tip amount:").grid( column=0, row=2, sticky=tk.E) 15. ttk.Entry(self, width=30, textvariable=self.tipAmount, state="readonly").grid(column=1, row=2) 16. ttk.Button(self, text="Calculate", command=self.calculate).grid(column=1,row=3, sticky=tk.E) 17. for child in self.winfo_children(): 18. child.grid_configure(padx=5, pady=3) 19. def calculate(self): 20. mealCost = float(self.mealCost.get()) 21. tipPercent = float(self.tipPercent.get()) 22. tipPercent = tipPercent/100 23. tip = mealCost * tipPercent 24. yourTip = "$" + str(round(tip, 2)) 25. self.tipAmount.set(yourTip) 26. if __name__ == "__main__": 27. root = tk.Tk() 28. root.title("Tip Calculator") 29. TipCalcFrame(root) 30. root.mainloop() Refer to Code Example 18-2: What does the GUI do if the user enters the cost of the meal and the tip percent and clicks the Calculate button? a. It calculates the amount of a tip to leave based on the user’s input, but it can’t display it because the Entry text field is read only. b. It calculates and displays the amount of a tip to leave based on the user’s input. c. It calculates and displays the total amount to leave based on the user’s input. d. It doesn’t do anything because the calculate() method isn’t connected to the Calculate button.

class ClubMember:def __init__(self,id,name,gender,weight,phone):self.id = idself.name = nameself.gender = genderself.weight = weightself.phone = phonedef __str__(self):return "Id:"+str(self.id)+",Name:"+self.name+",Gender:"+self.gender+",Weight:"+str(self.weight)+",Phone:"+str(self.phone) class Club:def __init__(self,name):self.name = nameself.members = {}self.membersCount = 0def run(self):print("Welcome to "+self.name+"!")while True:print("""1. Add New Member2. Delete a Member3. Search for a member4. Browse All Members5. Edit Member6. Exit""")choice = int(input("Choice:"))if choice == 1:self.membersCount = self.membersCount+1id = self.membersCountname = input("Member name:")gender = input("Gender:")weight = int(input("Weight:"))phone = int(input("Phone No."))member = ClubMember(id,name,gender,weight,phone)self.members[id] = memberelif choice == 2:id = int(input("Enter id of member to delete:"))del self.members[id]break elif choice == 3:id = int(input("Enter member id to…

import bridges.base.ColorGrid;import bridges.base.Color;public class Scene {/* Creates a Scene with a maximum capacity of Marks andwith a background color.maxMarks: the maximum capacity of MarksbackgroundColor: the background color of this Scene*/public Scene(int maxMarks, Color backgroundColor) {}// returns true if the Scene has no room for additional Marksprivate boolean isFull() {return false;}/* Adds a Mark to this Scene. When drawn, the Markwill appear on top of the background and previously added Marksm: the Mark to add*/public void addMark(Mark m) {if (isFull()) throw new IllegalStateException("No room to add more Marks");}/*Helper method: deletes the Mark at an index.If no Marks have been previously deleted, the methoddeletes the ith Mark that was added (0 based).i: the index*/protected void deleteMark(int i) {}/*Deletes all Marks from this Scene thathave a given Colorc: the Color*/public void deleteMarksByColor(Color c) {}/* draws the Marks in this Scene over a background…

. Protected variables coth Task 1.1: Base Animai Create Animal Class with 3 protected attributes: • name - String • type-String • nocturnal - boolean • 4 public void Methods: • printInfo-should print: " is a(n) ." • printSleepInfo-should print: "s sleep during day." or "s sleep during night." • printRoam - should print: " walks around." • printFeed method - will implement in subclasses ● Subclass Owl: Constructor takes in name as argument and sets the attributes: • Type should be "Owl", nocturnal should be true and name is given as the argument ia printFeed method: • Should print "You give some mice." Overriding roam method: • Should print " flies around." Subclass Monkey: • Similar constructor: • Type should be "Monkey", nocturnal should be false and name is given as the argument printFeed method: Should print "You give some bananas." Create another public method called printClimb: Should print " climbs a tree!" Overriding roam method of owl as owls fly Animal printInfo():void…

class SavingsAccount(object):         RATE = 0.02              def __init__(self, name, pin, balance = 0.0):         self._name = name         self._pin = pin         self._balance = balance       def __str__(self):         result =  'Name:    ' + self._name + '\n'          result += 'PIN:     ' + self._pin + '\n'          result += 'Balance: ' + str(self._balance)         return result     def __eq__(self,a):                      if self._name == a._name and self._pin == a._pin and self._balance == a._balance:                 return True             else:                 return False     def __gt__(self,a):                    if self._balance > a._balance:                 return True             else:                 return False       def getBalance(self):         return self._balance       def getName(self):         return self._name       def getPin(self):         return self._pin       def deposit(self, amount):               self._balance += amount         return self._balance…

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1. Create the main method using pythone to test the classes.   #Create the class personTypefrom matplotlib.pyplot import phase_spectrum class personType:    #create the class constructor    def __init__(self,fName,lName):        #Initialize the data members        self.fName = fName        self.lName = lName    #Method to access    def getFName(self):        return self.fName    def getLName(self):        return self.lName    #Method to manipulate the data members    def setFName(self,fName):        self.fName = fName    def setLName(self,lName):        self.lName = lName #Create the class Doctor Type inherit from personTypeclass doctorType(personType):    #Create the constructor for the doctorType class    def __init__(self, fName, lName,speciality="unknown"):        super().__init__(fName, lName)        self.speciality = speciality    #Methods to access    def getSpeciality(self):        return self.speciality    #Methods to manipulate    def setSpeciality(self,spc):…

// Declare data fields: a String named customerName, // an int named numItems, and // a double named totalCost.// Your code here... // Implement the default contructor.// Set the value of customerName to "no name"// and use zero for the other data fields.// Your code here... // Implement the overloaded constructor that// passes new values to all data fields.// Your code here... // Implement method getTotalCost to return the totalCost.// Your code here... // Implement method buyItem.//// Adds itemCost to the total cost and increments// (adds 1 to) the number of items in the cart.//// Parameter: a double itemCost indicating the cost of the item.public void buyItem(double itemCost){// Your code here... }// Implement method applyCoupon.//// Apply a coupon to the total cost of the cart.// - Normal coupon: the unit discount is subtracted ONCE// from the total cost.// - Bonus coupon: the unit discount is subtracted TWICE// from the total cost.// - HOWEVER, a bonus coupon only applies if the…

Create a class called Staff that has the following attributes: Staff   String - FirstName String - LastName String - Department String - Title Integer - UIN   Staff() Staff(FirstName, LastName, Department, Title, UIN) getFirstName() - String setFirstName(String) - void getLastName() - String setLastName(String) - void getDepartment() - String setDepartment(String) - void getTitle() - String setTitle(String) - void getUIN() - Integer setUIN(Integer) - void toString() - String compareTo(Staff) - Integer equals(Staff) - Boolean       PreviousNext

#ClubMember classclass ClubMember: #__init_ functiondef __init__(self,id,name,gender,weight,phone):self.id = idself.name = nameself.gender = genderself.weight = weightself.phone = phone #__str__ functiondef __str__(self):return "Id:"+str(self.id)+",Name:"+self.name+",Gender:"+self.gender+",Weight:"+str(self.weight)+",Phone:"+str(self.phone) #Club classclass Club: #__init__ functiondef __init__(self,name):self.name = nameself.members = {}self.membersCount = 0 def run(self):print("Welcome to "+self.name+"!")while True:print("""1. Add New Member2. View Member Info3. Search for a member4. Browse All Members5. Edit Member6. Delete a Member7. Exit""") choice = int(input("Choice:")) if choice == 1:self.membersCount = self.membersCount+1id = self.membersCountname = input("Member name:")gender = input("Gender:")weight = int(input("Weight:"))phone = int(input("Phone No.")) member = ClubMember(id,name,gender,weight,phone)self.members[id] = memberelif choice == 2:name = input("Enter name of…