Create new object using concatenated strings as object name

Question

I have a simple class that stores information about people attending a conference:

class Attendee:
    def __init__(self, fName, lName, email):
        self.fName = fName
        self.lName = lName
        self.email = email

I am attempting to create Attendee objects using a combination of two user-inputed strings:

#get inputs from user:
fName = input("First name: ")
lName = input("Last name: ")
    .....

newObjectName = fName[0] + lName

newObjectName = Attendee(fName, lName, email)

Obviously this will not work - but you get the idea I'm shooting for. I know in C# you can create a new object by:

Attendee newObjectName = new Attendee(fName, lName, email)

How would this translate to Python?

Thanks

Are you saying you want newObjectName to be the name of the variable? That is, if newObjectName = "bob" then bob = Attendee(...)? — Gareth Latty
– Gareth Latty, Commented Dec 20, 2012 at 2:30
btw: I don't think the C# code you showed does what you want either... — Ned Batchelder
– Ned Batchelder, Commented Dec 20, 2012 at 2:42

Ned Batchelder · Accepted Answer · 2012-12-20 02:41:44Z

4

If you want to have variable variable names, then you want a different data structure instead. For example, a dictionary works well:

attendees = {}
newObjectName = fName[0] + lName
attendees[newObjectName] = Attendee(fName, lName, email)

answered Dec 20, 2012 at 2:41

Ned Batchelder

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Daenyth · Accepted Answer · 2012-12-20 02:30:13Z

1

You already have the code in your question - newObjectName = Attendee(fName, lName, email)

answered Dec 20, 2012 at 2:30

Daenyth

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Comments

Sylvain · Accepted Answer · 2012-12-20 03:07:01Z

below in the Attendee class you define setters which will set values to your data attributes (variables) whenever an object is created and the user input the data

and you also define getters which are used to retrieve those data on demand

the last line with str will print the object state as a string

class Attendee:

    def __init__(self, fName, lName, email):

        self.fName = fName
        self.lName = lName
        self.email = email

    def set_fName(self, fName):
        self.__fName = fName

    def set_lName(self, lName):
        self.__lName = lName

    def set_email(self, email):
        self.__email = email

    def get_fName(self, fName):
        return self.__fName

    def get_lName(self, lName):
        return self.__lName

    def get_email(self, email):
        return self.__email

    def __str__(self):
        return "First name: " + self.__fName + "\nLast name: " + self.__lName + "\nEmail: " + self.__email

below is an example of a main program which asks for user input and creates a class object (of New_attendee class) I added a dictionary which is first created empty ( = {} ) and each entry is stored in the dictionary

def main():

    NewAttendee = {}

    again = 'y'

    while again == 'y':

        fName = input("First name: ")
        lName = input("Last name: ")
        email = input("Email: ")

        entry = Attendee(fName,lName, email)

        if fName not in NewAttendee:
            NewAttendee[fName] = entry
            print('The new attendee has been added')
        else:
            print('That name already exists.')

        again = input('Do you want to add a new attendee? \'y\' for yes -->')

main()

Hope that helps! PS: I didnt put the str (object state as a string) into action

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