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Python

Posted by Omar Abu Hamdan
Omar Abu Hamdan
794 Points

dictionaries

def menu(): print("""1-Add a new name and email address 2-Change an existing email address 3-Delete an existing name and email address 4-Look up a person's email address 5-Exit""")

def main():

menu()
choice=int(input("Please enter your choice from the menu: "))
name_dict={}
while choice!=5:
    name_dict={'omar':['omarabuhamdan@yahoo.com'],'fadel':['fahtrading@yahoo.com']}
    if choice==1:
        name=input("Please input name: ")
        email=input("Please input email address: ")
        if name in name_dict:
            print("This name already exists!")
        else:
            name_dict[name]=[email]
        print(name_dict)
        main()
    elif choice==2:
        name=input("please input the name you want to edit: ")
        if name in name_dict:
            email=input("please enter the new email: ")
            name_dict[name]=[email]
            print(name_dict)
        else:
            print("This name doesn't exist")
        main()

    elif choice==3:
        name=input("Please enter the name you would like to delete: ")
        if name in name_dict:
            del name_dict[name]
            print(name_dict)
        else:
            print("This name doesn't exist")
        main()

    elif choice==4:
        name=input("Please enter the name you would like to search for: ")
        if name in name_dict:
            name_dict.get(name)
        else:
            print("This name doesn't exist")
        main()
else:
    exit()

main() i am having a problem with my code and I'm not being able to figure it out. my dictionary isn't saving what I'm writing.

Omar Abu Hamdan
Omar Abu Hamdan
794 Points

i was testing it that's why i got some names and emails already in there, but it should be empty and i could fill it with names and emails as key-value pairs

1 Answer

Abhishek Tayal
Abhishek Tayal
21,525 Points
Abhishek Tayal
Abhishek Tayal
21,525 Points

You are calling the main() function every time when you are adding/modifying/deleting the entry in the dictionary. And that's why, every time you are starting with fresh name_dict. Please delete the main() function call from each case in while loop. def main():

choice=int(input("Please enter your choice from the menu: "))
name_dict={}
while choice!=5:
    if choice==1:
        name=input("Please input name: ")
        email=input("Please input email address: ")
        if name in name_dict:
            print("This name already exists!")
        else:
            name_dict.update({name: [email]})
        print(name_dict)

    elif choice==2:
        name=input("please input the name you want to edit: ")
        if name in name_dict:
            email=input("please enter the new email: ")
           name_dict.update({name: [email]})
            print(name_dict)
        else:
            print("This name doesn't exist")


    elif choice==3:
        name=input("Please enter the name you would like to delete: ")
        if name in name_dict:
            del name_dict[name]
            print(name_dict)
        else:
            print("This name doesn't exist")

    elif choice==4:
        name=input("Please enter the name you would like to search for: ")
        if name in name_dict:
            name_dict.get(name)
        else:
            print("This name doesn't exist")
else:
    exit()

main()

Omar Abu Hamdan
Omar Abu Hamdan
794 Points

it still doesn't save the library though, and other than that it keeps on asking me to input the name rather than moving on and giving me the menu again.