Accessing members of Python class from C++ (Embedded Python)????

[JM]

Hello everyone,

Does anybody know about, have documentation on, or have any code
samples on how to access class members from a python class in C++.

Say I have a simple python script:

---------------------------
class Animal:
NumLegs = 5
Size = 4.5
---------------------------

How exactly do you access these members from C++. I know how to get
the member if I know its name, ie.

pkObject = PyDict_GetItemS tring(pkDict, "Animal");
int uiNumLegs = PyInt_AsLong(Py Object_GetAttrS tring(pkObject, "NumLegs")) ;

But how do you iterate through all the class members and print their
names and values? This is easy to do for basic variables, but I can't
seem to do it for class variables.

Any help would be much apprecited. This is driving me nuts.

JG

[JM]

If anyone is interested in the solution:

pDict=PyObject_ GetAttrString(P yObject,"__dict __") will get the local
symbol table (a dictionary) for the class.

JG

jg*****@fluid-studios.ca (JM) wrote in message news:<fc******* *************** ****@posting.go ogle.com>...

Hello everyone,

Does anybody know about, have documentation on, or have any code
samples on how to access class members from a python class in C++.

Say I have a simple python script:

---------------------------
class Animal:
NumLegs = 5
Size = 4.5
---------------------------

How exactly do you access these members from C++. I know how to get
the member if I know its name, ie.

pkObject = PyDict_GetItemS tring(pkDict, "Animal");
int uiNumLegs = PyInt_AsLong(Py Object_GetAttrS tring(pkObject, "NumLegs")) ;

But how do you iterate through all the class members and print their
names and values? This is easy to do for basic variables, but I can't
seem to do it for class variables.

Any help would be much apprecited. This is driving me nuts.

JG

[Greg Chapman]

On 27 Aug 2003 10:14:02 -0700, jg*****@fluid-studios.ca (JM) wrote:

If anyone is interested in the solution:

pDict=PyObject _GetAttrString( PyObject,"__dic t__") will get the local
symbol table (a dictionary) for the class.

This may not be relevant to your needs, but a class's __dict__ only has
references to the attributes actually declared in the class; it doesn't have
inherited attributes. If you need access to all the attributes of a class, use
PyObject_Dir(aC lass), which returns a list of all attribute names declared in
the class and it's superclasses (it's the C equivalent of the dir builtin). You
can then use PyObject_GetAtt r(aClass, attrname) to fetch the attributes
themselves.

---
Greg Chapman