Question

I am trying two join to Class args together to make another one. The code below outputs the Name property as a tuple instead of a string.

# Person
class Person(ParentClass):
    def __init__(self,
            Collection = 'People',
            Firstname = '',
            Lastname = '',
            Name = '',
            **kwargs):
        self.Collection = Collection
        self.Firstname = Firstname
        self.Lastname = Lastname
        self.Name = '%s %s' % (self.Firstname, self.Lastname),
        self.__dict__.update(kwargs)

p = Person(Firstname='Foo',Lastname='Bar')  ## tuple, not string

p.Name = ('Foo', 'Bar')

The reason I am trying to join the first and last names in the __init__ as opposed to just a property is because the __init__ is tied to an inherited save_to_database method. I want the Name property to be save to the db, but as a string, NOT as a tuple.

Any clues would be fantastic!

Answer 1

Remove the trailing comma. Turn this…

self.Name = '%s %s' % (self.Firstname, self.Lastname),

into this:

self.Name = '%s %s' % (self.Firstname, self.Lastname)

(You’re effectively doing self.Name = 'foo', instead of self.Name = 'foo', and 'foo', is a single-element tuple with the only element being a string, whereas 'foo' is just a string.)