In this assignment, you will create an application that holds a list of contact information. You ...

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In this assignment, you will create an application that holds a list of contact information. You ...

In this assignment, you will create an application that holds a list of contact information. You will be able to prompt the user for a new contact, which is added to the list. You can print the contact list at any time. You will also be able to save the contact list.

MUST BE IN PYTHON FORMAT

Create the folllowing objects:

ContactsItem - attributes hold the values for the contact, including

FirstName - 20 characters
LastName - 20 characters
Address - 20 characters
State - 2 characters
Zip - 5 characters
Phone - 15 characters
E-Mail - 20 characters

Contacts - an object with the following methods:

constructor (__init__) - parameter is the name of the file containing the contacts (Contacts.txt)

Creates an empty list called ContactsList
Opens Contexts.txt
Read a line and splits it into components (Note that the "|" is the separator)
Constructs a ContactsItem and appends it to the ContactList

addcontacts - parameters are: FirstName, LastName, Address, City, State, Zip, Phone, Email

Constucts a ContactsItem and appends it to the ContactList

printcontacts - No Parameters

Prints a heading
Prints all of the contacts in the ContactsList

savecontacts - parameter is the name of the file to save the contacts to

Open the file for output
Loop through the ContactsList
Concatenate the contacts values and write to the file. Be sure to use "|" as a separator and a newline at the end of the line

Main Program

Create a Contacts object using the data in Contacts.txt
Read a prompt from the keyboard
if "Print" then print the contacts
if "Add" then prompt for the contact values, and append them to the list
if "Save" then save the contacts list to a file
if "Exit" then exit the program

Save your solution as Contacts.py and submit it via Blackboard

Grading Rubric

2 points - ContactsItem Object
2 points - Contact Constructor
1 point - add method
1 point - print method
2 points - save method
2 points - main program

Contacts.txt

Contacts.txt contains the following:

John|Smith|101 Main|Little Rock|AR|72211|(501) 555-1212|[email protected]
Jane|Doe|5 Mockingbird Lane|Benton|AR|72215|(501) 666-1234|[email protected]

engineering Computer-Science

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Answer 1

Answer #1

Screenshot Of Code :

# this is the contact item class stores the structure of the contact class ContactItem: def İnİt (self, FirstName , LastName 37 ew contaC tact methed adds def addContact (self, firstname, lastname, address, state, ziR phene, email): ContactItem (firs 66、 if name == main # creating the contact object Contactobject = Contact(Contacts.txt) # promting for user to enter the

Screenshot of Sample Output:

$C:lUsers Abhineet\PycharmProjectsluntitled venv Scripts python.exe C:/Users/Abhineet/PycharmP ENTER THE COMMAND >>>COMPLETE L$ ENTER THE NEXT COMMAND Print >>>COMPLETE LIST OF ALL CONTACTS<<< John 1 Smith 1 101 Main 1 Little Rock I AR 1 72211 1 (501) 5

Note : Contacts.txt is present in the location where the python file is present (for this solution)

Screenshot of Contact.txt before running program :

Screenshot of Contact.txt after running Program :

Note : Same contacts are appended to the list because it is mentioned in the question for the constructor "Constructs a ContactsItem and appends it to the ContactList".

So ContactList initially contains all the contacts present in the file. And when the new contact added they are added to the ContactList. And when saved the entire ContactList gets appended to the Contacts.txt (this is according to the question)

If you want to to add just new contacts to the Contacts.txt then do not read the Contacts.txt in "__init__ " method, in this way ContactList will be empty and when you add to the ContactList, only new contacts will be present and when saved duplicate contacts will not be written to the file

So, I tried to follow the instructions mentioned in the question.

Textual Source Code :

# this is the Contact item class stores the structure of the contact
class ContactItem:
    # constructor
    def __init__(self, FirstName, LastName,
                 Address, State, Zip, Phone, Email):
        self.FirstName = FirstName
        self.LastName = LastName
        self.Address = Address
        self.State = State
        self.Zip = Zip
        self.Phone = Phone
        self.Email = Email

class Contact:
    # constructor
    def __init__(self, filename):
        # creating a contact list
        self.ContactList = []
        self.filename = filename

        # opening the file in the reading mode
        self.file = open(filename, 'r')

        # reading content of the files
        lines = self.file.readlines()

        # Constructs a ContactsItem and appends it to the ContactList
        for line in lines:
            attributes = line.strip().split("|")
            newcontact = ContactItem(attributes[0], attributes[1], attributes[2], attributes[3],
                                     attributes[4], attributes[5], attributes[6])

            self.ContactList.append(newcontact)

        # closing the file
        self.file.close()


    # this method adds a new contact to the ContactList
    def addContact(self, firstname, lastname, address, state, zip, phone, email):
        newcontact = ContactItem(firstname, lastname, address, state, zip, phone, email)
        self.ContactList.append(newcontact)

    # this method print all the contact in the contactlist
    def printContacts(self):
        # printing heading
        print(">>>COMPLETE LIST OF ALL CONTACTS<<<")

        # iterating over all headings
        for contact in self.ContactList:
            print(contact.FirstName , "|", contact.LastName, "|", contact.Address, "|"
            , contact.State, "|", contact.Zip, "|",  contact.Phone, "|" + contact.Email)


    # saving contacts to the file
    def saveContacts(self):

        # opening will in append mode
        with open(self.filename, 'a', newline='\n') as self.file:
            # iterating over ContactList and appending data to the file
            for contact in self.ContactList:
                self.file.write("\n" + str(contact.FirstName + "|" + contact.LastName + "|" + contact.Address + "|"
                + contact.State + r"|" + contact.Zip + "|" + contact.Phone + "|" + contact.Email))

            self.file.close()


if __name__ == '__main__':
    # creating the Contact Object
    ContactObject = Contact('Contacts.txt')

    # promting for user to enter the command
    prompt = input("ENTER THE COMMAND\n")

    # continue to take command form user until user enters exit
    while prompt != "Exit":
        if prompt == "Print":
            ContactObject.printContacts()

        elif prompt == "Add":
            firstname = input("Enter Firstname\n")
            lastname = input("Enter Lastname\n")
            address = input("Enter Address\n")
            state = input("Enter state\n")
            zip = input("Enter zip\n")
            phone = input("Enter phone\n")
            email = input("Enter Email\n")
            ContactObject.addContact(firstname, lastname, address, state, zip, phone, email)

        elif prompt == "Save":
            ContactObject.saveContacts()

        prompt = input("\nENTER THE NEXT COMMAND\n")

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