When *don't* I use 'self' in classes?

Adam Gaskins agaskins_ng at kelleramerica.com
Thu May 14 17:57:27 CEST 2009


Thanks a lot everyone! This really cleared it up for me! :)

"Adam Gaskins" <agaskins_ng at kelleramerica.com> wrote in message 
news:rXHOl.41113$5N7.8212 at newsfe09.iad...
>I am a bit confused as too when, if ever, it is not appropriate to prepend 
>'self' to objects in a class. All of the examples of how to use 'self' that 
>I find seem to be short and very simple (as examples tent to be). I 
>appologize if I am asking an ignorant question here, but I want to get off 
>on the right foot. Here's an example of what I mean:
>
> import serial
> class foo:
>    def __init(self, comport):
>        self.comport = comport
>        self.baudrate = 9600 #default
>        self.ser = serial
>        try:
>            self.ser.Serial()
>            self.ser.baudrate = self.baudrate
>            self.ser.open()
>        except:
>            print 'Serial port could not be opened'
>
> === OR ===
> import serial
> class foo:
>    def __init(self, comport):
>        self.comport = comport
>        self.baudrate = 9600 #default
>        try:
>            ser = serial.Serial()
>            ser.baudrate = self.baudrate
>            ser.open()
>        except:
>            print 'Serial port could not be opened'
>
> There may be a typo in here, this is just a random example similar to 
> something I'm working with, but which one of these are more 'proper'? If I 
> am importing a library do I still prepend it's object with self when I use 
> it in my class? I suppose my question is just basically... when do you NOT 
> prepent an object in a class with 'self'?
>
> I'm not even sure I'm using the term 'object' correctly here. Feel free to 
> set me straight, but I hope my example makes it clear what I am asking.
>
> Thanks a lot, this ng has already been super helpful as I take my 
> crash-course in to python! :P
> 





More information about the Python-list mailing list