Question

VELYIEW Design a program that you can use to keep information on your family or friends. You may view the video demonstration of the program located in this module to see how the program should function. Instructions Your program should have the following classes: Base Class - Contact (First Name, Last Name, and Phone Number) Sub Class - Family (First Name, Last Name, Phone Number, and Relationship le. cousin, uncle, aunt, etc.) Sub Class - Friends (First Name, Last Name, Phone Number, and Date Met) The program should be menu-driven, and offer the following operations: 1. The Phone Book Application will need to store the contact information for family members and friends in text files called family.txt and friends.txt respectively. 2. Add Contact After the user selects this option, they should have a second option to select whether to enter the info for a Family or friend. The contact should then be created in a separate function and returned to the main function to be added to the phone book list. The appropriate sub-class should then be instantiated and the new record should be stored in one array that holds not more than 25 records. 3. Edit Contact - This functionality should allow the user to search through the array of objects by name and then allow the user to modify the phone number. 4. Delete Contact - This functionality should allow the user to display all contacts with all of their information. 5. View Contacts - This functionality should show all of the contacts listed in the user's phone book. It should even show contacts when the program starts by reading them from the file. 6. Exit the program. IMPORTANT: Please remember to comment your name at the top of your code. See the Schedule in the Syllabus Module for due dates and the rubric attached to this Dropbox for grading information Phone Book App Introduction Video Web Page

language:python

Answer 1

Summary :

Provided code for different options / menu mentioned .

Notes :

Included validation for name , phone numbe using regular expression , same can be extended if required for other fields or refined if required .

Delete - For this menu the matched contact is deleted . as it was not clear from the mentioned in above quesiton.

Python Code :

import re

class Contact :
    """
        define initialization function with default parameters - blank and zero for first name , last name & phone number respectively.
    """

    def __init__(self,fName="" , lName="",pNumber=0):
        self.firstName = fName
        self.lastName = lName
        self.phoneNumber = pNumber

    def getFirstName(self) :
        return self.firstName

    def getLastName(self):
        return self.lastName

    def getPhone(self):
        return self.phoneNumber

    def setFirstName(self,name):
        self.firstName = name

    def setLastName(self,name):
        self.lastName = name

    def setPhone(self,phone):
        self.phoneNumber = phone

    def __str__(self) :
        rstr = "Name : " + self.firstName + ", " + self.lastName + " ; Phone : " + str(self.phoneNumber )
        return rstr

    def readFirstName(self ) :
        """ This function reads input from User and validates using regular express whether input word only has alphabets
             then sets the values to First name and exits
             otherwise repeatedly prompts user for valid input
        """

        flag = True
        while ( flag ) :
            name = input("Enter First Name : ")
            if ( re.match("^[a-zA-Z]*$", name) ) :
               self.setFirstName(name)
               flag = False
            else :
                print("Enter Valid input ")

    def readLastName(self ) :
        flag = True
        while ( flag ) :
            name = input("Enter Last Name : ")
            if ( re.match("^[a-zA-Z]*$", name) ) :
               self.setLastName(name)
               flag = False
            else :
                print("Enter Valid input ")

    def readPhone(self) :
        flag = True
        while ( flag ) :
            name = input("Enter Phone Number : ")
            if ( re.match("^[0-9- ]*$", name) ) :
               self.setPhone(name)
               flag = False
            else :
                print("Enter Valid input ")

class Family(Contact) :

    def __init__(self,fName="",lName="",phone=0,relationship=""):
        super().__init__(fName,lName,phone)
        self.relationship = relationship

  
    def getRelation(self) :
        return self.relationship

    def setRelation(self,relation_str):
        self.relationship = relation_str

    def __str__(self) :
        return super().__str__() + " ; Relation : " + self.relationship

class Friend(Contact) :

    def __init__(self,fName="",lName="",phone=0,dateMet=0):
        super().__init__(fName,lName,phone)
        self.dateMet = dateMet

  
    def getDateMet(self) :
        return self.dateMet

    def setDateMet(self,dateM):
        self.dateMet = dateM

    def __str__(self) :
        return super().__str__() + " ; DateMet : " + self.dateMet

def readFamilyContacts(filename , contactType):
    fContacts = []
    if contactType == "family" :
        flname = "family.txt"
    elif contactType == "friend":
        flname = "friend.txt"
    else :
        print(" Invalid contact Type ")
        return []

    try :
        with open(flname, 'r') as file1:
            lines = file1.readlines()
          
            for line0 in lines :
                #print("Line ", line)
                line = line0.strip()
                fields = line.split(";")
                if ( len(fields) == 3 ) :
                    #print("Fields ", fields[0] , fields[1], fields[2])

                    name = fields[0].split(":")
                    names = name[1].split(",")
                    phoneNum = fields[1].split(":")
                    lastfield = fields[2].split(":")
                    #print("Names : ", names )
                    #print("Phone nUm " , phoneNum )
                    #print("Last field " , lastfield)
                    if contactType == "family" :
                        #relationShip = lastfield.split(":")
                        contact = Family(names[0],names[1],phoneNum[1],lastfield[1])
                        fContacts.append(contact)
                    if contactType == "friend" :
                        #dateMet = lastfield.split(":")
                        contact = Friend(names[0],names[1],phoneNum[1],lastfield[1])
                        fContacts.append(contact)

            return fContacts
    except(FileNotFoundError) :
        print("Input file not found ")
        return []

def showMenu(itype) :
    if ( itype == 1 ) :
        print("Choose from following :")
        print("   1.Add Contact")
        print("   2.Edit Contact")
        print("   3.Delete Contact")
        print("   4.View Contact")
        print("   5.Exit")
    else :
        print("Choose from following : ")
        print("   1. Family")
        print("   2. Friend")

def getChoice(itype) :
    flag = True
  
    ichoice = 0
    while(flag ) :
        try :
            input_str = input("Enter your Choice : ")
            ichoice = int(input_str)
            if ( itype == 1 ) :
                upper_limit = 5
            else :
                upper_limit = 2
            if ( ichoice < 1 ) or ( ichoice > upper_limit ):
                print(" Enter valid input , for eg 1 or " + str(upper_limit) )
            else :
                flag = False
                break
        except ValueError as e :
                print(" Enter valid input , for eg 1 or " + str(upper_limit) )

    return ichoice
  
      

def addContact() :
    """ This function doesn't take any parameters
        It prompts user for which type of contact to be created and then
        prompts for name , phonenum and other input
        creates a contact object and returns
    """

    showMenu(2)
    input_str = getChoice(2)
  
    contact_obj = None
    if ( input_str == 1 ) :
        contact_obj = Family()
        contact_obj.readFirstName()
        contact_obj.readLastName()
        contact_obj.readPhone()
        relation_str = input("Enter relationship : ")
        contact_obj.setRelation(relation_str)
    else :
        contact_obj = Friend()
        contact_obj.readFirstName()
        contact_obj.readLastName()
        contact_obj.readPhone()
        date_met = input("Enter Date Met : ")
        contact_obj.setDateMet(date_met)
    return contact_obj

def editContact(contacts) :
    """ This function takes contacts list as the input and prompts user to input the name of the contact
        and modify the contact
    """

    name = input("Enter the name of the Contact to be modified : ")

    modify_item = None
    for item in contacts :
        if ( name in item.getFirstName() or name in item.getLastName() ) :
            phone_num = input("Enter updated phone number : ")
            if ( len(phone_num) > 0 ) :
                item.setPhone(phone_num)

        # Check if the object type is Family or Friend and decide to udpate respectively
            if isinstance(item, Family ) :
                relation_str = input("Enter updated relationship : ")
                if ( len(relation_str) > 0 ) :
                    item.setRelation(relation_str)
            if isinstance(item, Friend ) :
                date_met = input("Enter updated date met : ")
                if ( len(date_met) > 0 ) :
                    item.setDateMet(date_met)
            break

def deleteContact(contacts) :
    """ This function takes contacts list as the input and prompts user to input the name of the contact
        and deletes the matched
    """

    name = input("Enter the name of the Contact to be Deleted : ")

    modify_item = None
    for item in contacts :
        if ( name in item.getFirstName() or name in item.getLastName() ) :
           contacts.remove(item)
           break

def storeContacts(contacts) :
  
    try :
        file1 = open("family.txt", 'w')
        file2 = open("friend.txt", 'w')
        for item in contacts :
        # Check if the object type is Family or Friend and decide to write respective files
            if ( isinstance(item,Family)):
                    file1.write(item.__str__() + "\n")
           if ( isinstance(item,Friend)):
                    file2.write(item.__str__() + "\n")
    except(FileNotFoundError) :
        print("Input file not found ")
        return []

if __name__ == '__main__':

    #b1 = Family("X1","x2",123456789,"Bro")
    #print( b1)

    #f1 = Friend("xk","kd",3432983928,"24/01/3993")
    #print(f1)

    family_list = readFamilyContacts("family.txt","family")
    friend_list = readFamilyContacts("friend.txt","friend")
    contacts_list = family_list + friend_list

    ip = 1
    while ( ip != 5 ) :
        showMenu(1)
        ip = getChoice(1)
        if ( ip == 1 ) :
          c_obj =   addContact()
          contacts_list.append(c_obj)

        if ( ip == 2 ) :
            editContact(contacts_list)

        if ( ip == 3 ) :
            deleteContact(contacts_list)
        if ( ip == 4 ) :
            for cnt in contacts_list :
                print( cnt )
        if ( ip == 5 ) :
            storeContacts(contacts_list)

Output :

usrODESKTOP-VUM52 6N:/mnt/i/PRJ/Code/pyth/misc/Cards $ python3 PhoneBook.py Choose from following: 1. Add Contact 2. Edit Contact 3. Delete Contact 4. View Contact 5. Exit Enter your choice : 4 Name : James, Xing ; Phone : 123456789 Relation : Father Name : James; Jr Xing ; Phone : 123456989 ; Relation : Brother Name : James, Jr I Xing ; Phone : 123456589 Relation : Cousin Name : Michelle, xing ; Phone : 123451789 Relation : Sister Name : Rina, Xing ; Phone : 123452789 ; Relation : Mother Name : Mao, PXing ; Phone : 123453789 Relation: Cousin Name Pao, Yua iPhone : 123454789 Relation : Uncle Name : Rinki, Yua ; Phone : 123455789 ; Relation: Aunt Name Douglous, Xing ; Phone : 123456789 ; Relation : Grand Father Name : Pinky, Xing ; Phone : 123457789 ; Relation : Grand Monther Name : Kyle, Micheal ; Phone : 123456781 ; DateMet : 24/12/2010 Name : King Jr Micheal ; Phone : 123456982 ; DateMet : 25/11/2012 Name : Jim Jr I Micheal ; Phone : 123456583 ; DateMet: 26/10/2015 Name : Yua, Micheal ; Phone : 123451784 ; DateMet : 11/11/2018 Name Rina, Mike ; Phone : 123452785 ; DateMet : 09/09/2017 Name : Arina, Mitchell ; Phone : 123453786 ; DateMet : 01/02/2016 Name : Paula, Yin ; Phone : 123454787 DateMet : 12/31/2014 Name : Rinki, Pao ; Phone : 123455788 ;DateMet : 11/30/2005 Name : Douglous, Micheal Phone : 123456789 DateMet : 11/11/2011, Name : Pinky, Micheal ; Phone : 123457729 DateMet : 05/05/2005 Choose from following : 1. Add Contact 2. Edit Contact 3. Delete Contact 4. View Contact 5. Exit Enter your choice : 1 Choose from following: 1. Family 2. Friend Enter your choice : 1 Enter First Name : James Enter Last Name : Bond Enter Phone Number : 1233333333 Enter relationship : Uncle Choose from following: 1. Add Contact 2. Edit Contact 3. Delete Contact 4. View Contact 5. Exit Enter your choice : 2 Enter the name of the Contact to be modified : Pinky Enter updated phone number : 222222222 Enter updated relationship : Aunty

Enter the name of the Contact to be modified : Pinky Enter updated phone number : 222222222 Enter updated relationship : Aunty Choose from following : 1. Add Contact 2. Edit Contact 3. Delete Contact 4. View Contact 5. Exit Enter your choice : 3 Enter the name of the Contact to be deleted : Arina Choose from following : 1. Add Contact 2. Edit Contact 3. Delete Contact 4. View Contact 5. Exit Enter your choice : 4 Name : James, Xing ; Phone : 123456789 ; Relation : Father Name : James, Jr Xing ; Phone : 123456989 Relation : Brother Name : James Jr I Xing ; Phone : 1234565 89 ; Relation : Cousin Name : Michelle, Xing ; Phone : 123451789 ; Relation Sister Name : Rina, Xing ; Phone : 123452789 ; Relation : Mother Name : Mao, PXing ; Phone : 123453789 ; Relation : Cousin Name : Pao, Yua ; Phone : 123454789 ; Relation : Uncle Name : Rinki, Yua ; Phone : 123456789 ; Relation: Aunt Name Douglous, Xing ; Phone : 123456789 ; Relation : Grand Father Name : Pinky, Xing ; Phone : 222222222; Relation : Aunty Name : Kyle, Micheal ; Phone : 123456781 DateMet : 24/12/2010 Name : King, Jr Micheal ; Phone : 123456982 DateMet : 25/11/2012 Name Jr I Micheal ; Phone : 123456583 DateMet : 26/10/2015 Name : Yua, Micheal ; Phone : 123451784 DateMet : 11/11/2018 Name : Rina, Mike ; Phone : 123452785 DateMet : 09/09/2017 Name : Paula, Yin ; Phone : 123454787 DateMet : 12/31/2014 Name : Rinki, Bao ; Phone : 123455788 DateMet : 11/30/2005 Name : Douglous, Micheal ; Phone : 123456789 DateMet : 11/11/2011 Name : Pinky, Micheal Phone : 123457729 DateMet : 05/05/2005 Name : James, Bond ; Phone : 1233333333; Relation : Uncle Choose from following : 1. Add Contact 2. Edit Contact 3. Delete Contact 4. View Contact 5. Exit Enter your choice : 5 usr@DESKTOP-VUM526N:/mnt/i/ PRJ/ Code/pyth/misc/Cards $ cat family.txt Name : James, Xing Phone : 123456789 ; Relation : Father James, Jr Xing ; Phone : 123456989 ; Relation : Brother Name : James, Jr I Xing ; Phone : 1234565 89 ; Relation : Cousin Name : Michelle, Xing ; Phone : 123451789 ; Relation : Sister Name Rina, Xing ; Phone : 123452789 ; Relation: Mother Name : Mao, PXing ; Phone : 123453789 Relation : Cousin Name : Pao, Yua ; Phone : 123454789 Relation : Uncle Name : Rinki, Yua ; Phone : 123455789 Relation: Aunt Name : Douglous, Xing ; Phone : 123456789 ; Relation : Grand Father Name : Pinky Xing ; Phone : 222222222; Relation: Aunty

Name : James, Bond ; Phone : 1233333333; Relation : Uncle Choose from following : 1. Add Contact 2. Edit Contact 3. Delete Contact 4. View Contact 5. Exit Enter your choice : 5 usr@DESKTOP-VUM526N:/mnt/i/ PRJ/Code/pyth/misc/Cards $ cat family.txt Name : James, Xing ; Phone : 123456789 ; Relation : Father Name : James; Jr Xing ; Phone : 123456989 ; Relation : Brother Name : James, Jr I Xing ; Phone : 1234565 89 Relation : Cousin Name : Michelle, Xing ; Phone : 123451789 ; Relation : Sister Name : Rina, Xing ; Phone : 123452789 ; Relation: Mother Name : Mao, PXing ; Phone : 123453789 Relation: Cousin Name : Pao, Yua ; Phone : 123454789 ; Relation : Uncle Name : Rinki, Yua ; Phone : 123455789 Relation: Aunt Name : Douglous; Xing ; Phone : 123456789 ; Relation : Grand Father Name : Pinky, Xing ; Phone : 222222222; Relation : Aunty Name : James, Bond ; Phone : 1233333333 ; Relation : Uncle usr@DESKTOP-VUM52 6N: /mnt/i/PRJ/Code/pyth/misc/Cards $ cat friend.txt Name : Kyle: Micheal | Phone: 123456781 DateMet : 24/12/2010 Name : King, Jr Micheal Phone : 123456982 ; DateMet 25/11/2012 Name : Jim, Jr I Micheal iPhone : 123456583 ; DateMet : 26/10/2015 Name : Yua, Micheal ; Phone : 123451784 DateMet : 11/11/2018 Name : Rina, Mike ; Phone : 123452785 ; DateMet : 09/09/2017 Name : Paula, Yin ; Phone : 12345 4787 DateMet : 12/31/2014 Name : Rinki, Pao ; Phone : 123455788 DateMet : 11/30/2005 Name : Douglous, Micheal Phone : 123456789 ; DateMet : 11/11/2011 Name : Pinky, Micheal ; Phone : 123457729 DateMet : 05/05/2005 usrODESKTOP-VUM5 26N:/mnt/i/ PRJ/Code/pyth/misc/ Cards$