On 08/02/2011 09:09 PM, Brett Ritter wrote:
On Tue, Aug 2, 2011 at 8:47 PM, brandon w<thisisonlyat...@gmx.com> wrote:
1) When should I use "def __init__(self):" when I create a class?
When you have any initialization to do. (in other words, when you
want class instantiation to do more than simply give you an instance
of the class.
2) Would these two classes have the same effect?
Neither of these two classes compile. You should try what you are
asking before asking, it will lead you to better questions.
Your examples show some misunderstanding about Python classes.
1) an __init__ method shouldn't return anything. The Class
construction call will already return an instance of the class,
__init__ is just about initialization.
2) A class definition likewise has no return value.
3) In your examples, Marcus and Jasmine are either intended to be
strings (and should be quoted), or are variables you didn't provide.
Here, try running these examples and see what you can figure out.
Experiment with them a little, then come back with questions on what
you observe.
class Name:
def __init__(self):
self.man = "Marcus"
self.woman = "Jasmine"
instance = Name()
print instance.man # Python 3 will use a different print syntax
class Name:
pass
instance = Name()
instance.man = "Fred"
print instance.man
I see that the name Fred was assigned to "instance.man" in the example
that you gave. I did forget to put the quotes around the names to make
them strings. I thought that those would compile. I just wanted to
understand the reason why people would use "def __init__(self):" so that
I know when to use it.
Thank you for your help.
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