phonebook = dict()
def Menu():
    print("\nWelcome to the phonenbook")
    print("----------------------------")
    print("1: delete a contact:")
    print("2: Search contact by name:")
    print("3: Display all contacts:")
    print("4: Add a contact:")
    print("-----------------------------")
    choice = input(str("choose from menu"))
    if choice == "4":
        ADD_to()
    elif choice =="3":
        Display()

    elif choice == "2":
        search()


    elif choice =="1":
        Delete_con()

    else:
        print("INVALID CHOICE")


def ADD_to():
  name = input("enter a name to store")
  phonenumber = input("enter phone number to save")
  phonebook[name]=phonenumber
  with open("phonebook1.txt", "w+") as file:
      for keys,values in (phonebook.items()):
        display = file.writelines(keys + ":")
        display = file.writelines(values + "\n")
  return Menu()

def Display_dict():
    for items in phonebook:
        print(items)


def Display():
    with open("phonebook1.txt", "r") as file:
         print(file.read())

def Delete_con():
    contact_to_delete= input("choose name to delete from contact")

    with open("phonebook1.txt", "r") as file:
        content = file.readlines()              #Read lines from text
        content = [line for line in content if line not in [contact_to_delete]]   #Check if user input is in line
    with open("phonebook1.txt", "w") as file:    #Write back content to text
        file.writelines(content)


def Load_dictionary():
    with open('phonebook1.txt', 'r') as file:
        for  line in file:
            x = line.split(":")
            a=x[0]
            b=x[1]
            phonebook[a]=b


def search():
    search_this = input("Enter name to search in contact list:")
    if search_this in phonebook:
       print(" {} : {}".format(search_this,phonebook.get(search_this)))


Load_dictionary()
Menu()