How to edit and delete keys and values in python dict答案

【问题标题】：How to edit and delete keys and values in python dictHow to edit and delete keys and values in python dict
【发布时间】：2022-12-02 03:22:26
【问题描述】：

i have a little problem that needs solving, i have to write a program that saves contacts in a dict and be able to 1- add new contacts 2- delete contacts 3- edit contacts 4- list contacts 5- show contacts

i wrote a simple program that saves contacts into a dictionary but i have a problem with the rest and i could really user some help!!

here is my code:

contacts = {"Mohamed": {"name": "Mohamed Sayed", "number": "017624857447", "birthday": "24.11.1996", "address": "Ginnheim 60487"},
            "Ahmed": {"name": "Ahmed Sayed", "number": "0123456789", "birthday": "06.06.1995", "address": "India"}}

def add_contact():

    for _ in range(0, 1):
        contact = {}
        name = input("Enter the name: ")
        number = input("Enter the number: ")
        birthday = input("Enter the birthday")
        address = input("Enter the address")


        contact["name"] = name
        contact["number"] = number
        contact["birthday"] = birthday
        contact["address"] = address
        print(contact)
        contacts.update(contact)


add_contact()
print(contacts)



def del_contact():
    user_input = input("Please enter the name of the contact you want to delete: ")
    for k in contacts:
        if user_input == contacts["name"]:
            del contacts[k]
del_contact()
print(contacts)


def edit_contact():
    user_input = input("please enter the contact you want to edit: ")
    for k, v in contacts:
        if user_input == contacts["name"]:
            contacts.update(user_input)


def list_contact():
    pass



def show_contact():
    user_input = input("please enter the contact you want to show: ")
    for k, v in contacts.items():
        if user_input == contacts["name"]:
            print(key, value)

show_contact()

【问题讨论】：

As a quick note, your def edit_contact() does nothing like what the function name suggests, all that will hypothetically do is create a new element within the list.

标签： python list loops dictionary for-loop

【解决方案1】：

For your def's you dont need to use a for ... in range(...) loop, rather you can just call upon that value by the value of user_value. I've decided to not include def edit_contact(): in this as it currently doesn't edit anything, all it does is add a new element within contacts with that in mind

contacts = {"Mohamed": {"name": "Mohamed Sayed", "number": "017624857447", "birthday": "24.11.1996", "address": "Ginnheim 60487"},
            "Ahmed": {"name": "Ahmed Sayed", "number": "0123456789", "birthday": "06.06.1995", "address": "India"}}

def add_contact():
    for _ in range(0, 1):
        contact = {}
        name = input("Enter the name: ")
        number = input("Enter the number: ")
        birthday = input("Enter the birthday")
        address = input("Enter the address")
        contact["name"] = name
        contact["number"] = number
        contact["birthday"] = birthday
        contact["address"] = address
        print(contact)
        contacts[name] = contact
add_contact()
print(contacts)



def del_contact(contacts):
    user_input = input("Please enter the name of the contact you want to delete: ")
    contacts = contacts.pop(user_input)
del_contact(contacts)
print(contacts)


def edit_contact():
    user_input = input("please enter the contact you want to edit: ")
    for k, v in contacts:
        if user_input == contacts["name"]:
            contacts.update(user_input)


def list_contact():
    pass

def show_contact():
    user_input = input("please enter the contact you want to show: ")
    print(contacts[user_input])
    #you can use 'contacts[user_input]['name', 'number', 'birthday' or 'address']' to call upon specific elements within the list

show_contact()

Hope this helps.

【讨论】：