How to declare a Class inside another class as avariable?

[psbasha]

Hi,

How to declare a Class inside another class as avariable?

For Example"

Class X{

MethodX1();

}

Class Y{

Class X _xObj; # Declaration of class object as a variable in another class

MethodY1(){

_xObj = ..

_xObj ->MethodX1()

}

}

[bartonc]

Hi,

How to declare a Class inside another class as avariable?

For Example"

Class X{

MethodX1();

}

Class Y{

Class X _xObj; # Declaration of class object as a variable in another class

MethodY1(){

_xObj = ..

_xObj ->MethodX1()

}

}

You can instantiate a class in Python the same way:

class MyClass(object):
   # class and instance stuff here
    def DoStuff(self):
        print "hello", self
 
class InstantiatesMyClass(object):
    def __init__(self):
        self.myClassObj = MyClass()
imc = InstantiatesMyClass()
imc.myClassObj.DoStuff()

[psbasha]

You can instantiate a class in Python the same way:

class MyClass(object):
   # class and instance stuff here
    def DoStuff(self):
        print "hello", self
 
class InstantiatesMyClass(object):
    def __init__(self):
        self.myClassObj = MyClass()
imc = InstantiatesMyClass()
imc.myClassObj.DoStuff()

Hi,

Thanks for the example.

So base classes has to be derived from the "object" python class.Is my undrestanding correct?.

[Extremist]

Hi,

Thanks for the example.

So base classes has to be derived from the "object" python class.Is my undrestanding correct?.

Remember that when you use classes in python it would look something like this:

class myFrame(wx.Frame):
         def __init__(self,parent,id,title):
                    wx.Frame.__init__(self,parent=None,id,title)
         def somethingelse(self):
                    Dosomethingelse;
 
 

Where 'myFrame' is the name of your class.
And you inherit methods from 'wx.Frame'
So you can use the __init__ method from the 'wx.Frame' class
As previously mentioned, all you have to do is to create an instance of your class to use it inside another class for example

 
class newclass:
         def __init__(self):
                 instance = myFrame(None,-1,"Just some parameters")
 
 

Does this answer your question?

[bartonc]

Hi,

Thanks for the example.

So base classes has to be derived from the "object" python class.Is my undrestanding correct?.

Only for "New Style" inheritance to work. It is the recommended coding since about version 2.4.