Object System

[John Mendelewski]

I was wondering if anyone had documents or articles what gave an in-
depth view of the object system in Python. Ones concerning dispatch,
how self really works, and maybe some meta-programming that comes
along with the new style classes.

 

[Benjamin Peterson]

I was wondering if anyone had documents or articles what gave an in-
depth view of the object system in Python. Ones concerning dispatch,
how self really works, and maybe some meta-programming that comes
along with the new style classes.

What do you mean "how self really works"?

It's just an instance of the class.

 

[John Mendelewski]

John Mendelewski <john.mendelewski <at> gmail.com> writes:




What do you mean "how self really works"?

It's just an instance of the class.

I meant:
.... def do(self):
.... print self.__class__, self.__class__.__bases__
....<class '__main__.A'> (<type 'object'>,)

What goes on behind the scenes to make a.do() evaluate the do
method with a bound to self in that method? Is this implemented
in C, Python? I think I have a grasp of how to use objects, but
I was wondering about the implementation I suppose.

 

[Benjamin Peterson]

What goes on behind the scenes to make a.do() evaluate the do
method with a bound to self in that method? Is this implemented
in C, Python? I think I have a grasp of how to use objects, but
I was wondering about the implementation I suppose.

This is implemented using descriptors. See
http://users.rcn.com/python/download/Descriptor.htm for a good overview.

 

[Michele Simionato]

I was wondering if anyone had documents or articles what gave an in-
depth view of the object system in Python. Ones concerning dispatch,
how self really works, and maybe some meta-programming that comes
along with the new style classes.

The second Google hit for "python object system":

http://www.cafepy.com/article/python_types_and_objects/python_types_and_objects.html

This is actually a very good book indeed.

Michele Simionato

 

[Terry Reedy]

I was wondering if anyone had documents or articles what gave an in-
depth view of the object system in Python.

http://effbot.org/zone/python-objects.htm