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class Contact:
    def __init__(self, name, phone_number, email, addr):
        self.name = name
        self.phone_number = phone_number
        self.email = email
        self.addr = addr

    def print_info(self):
        print("Name: ", self.name)
        print("Phone Number: ", self.phone_number)
        print("E-mail: ", self.email)
        print("Address: ", self.addr)


def set_contact():
    name = input("Name: ")
    phone_number = input("Phone Number: ")
    e_mail = input("E-mail: ")
    addr = input("Address: ")
    contact=Contact(name,phone_number,e_mail,addr)
    return contact

def print_menu():
    print("1. 연락처 입력")
    print("2. 연락처 출력")
    print("3. 연락처 삭제")
    print("4. 종료")
    menu=input("메뉴를 입력 : ")
    return int(menu)


def print_contact(contact_list):
    for contact_iter in contact_list:
        contact_iter.print_info()
        print('---------------------')

def delete_contact(contact_list,name):
    for i, contact in enumerate(contact_list):
        if contact.name == name:
            del contact_list[i]
            print("삭제 완료")
            return

    print("삭제 실패")


def store_contact(contact_list):
    f=open("contact_db.txt","wt")
    for contact in contact_list:
        f.write(contact.name+'/')
        f.write(contact.phone_number+'/')
        f.write(contact.email+'/')
        f.write(contact.addr+'/')
        f.write('\n')
    f.close()

def load_contact(contact_list):
    f=open("contact_db.txt","rt")
    lines=f.readline()

    data_num=int(len(lines))

    while (lines=f.readline())==0 :



    #name, phone, email, addr = lines[i].split('/')
    #contact=Contact(name,phone,email,addr)
    #contact_list.append(contact)
    for i in range(data_num):
        #name= lines[i].rstrip('/')
        #phone = lines[i].rstrip('/')
        #email = lines[i].rstrip('/')
        #addr = lines[i].rstrip('/')
        name, phone, email, addr = lines[i].split('/')
        contact=Contact(name,phone,email,addr)
        contact_list.append(contact)



    f.close()

def run():
    print("Contact Program!!")
    contact_list = []
    load_contact(contact_list)

    while 1:
        menu=print_menu()
        if menu==1:     #연락처 입력
            contact = set_contact()
            contact_list.append(contact)

        elif menu==2:     #연락처 출력
            print_contact(contact_list)

        elif menu==3:
            del_name=input("삭제할 이름을 입력하세요:")
            delete_contact(contact_list,del_name)

        elif menu==4:
            store_contact(contact_list)
            break


if __name__ == "__main__":
    run()