Calling a method from a parent class in Python
Question: Can anyone help me with the correct syntax to call my method
`__get_except_lines(...)` from the parent class?

I have a class with a method as shown below. This particular method has the 2
underscores because I don't want the "user" to use it.

    
    
    NewPdb(object)
        myvar = ...
        ...
        def __init__(self):
            ...
        def __get_except_lines(self,...):
            ...
    

In a separate file I have another class that inherits from this class.

    
    
    from new_pdb import NewPdb
    
        PdbLig(NewPdb):
            def __init__(self):
                ....
                self.cont = NewPdb.myvar
                self.cont2 = NewPdb.__get_except_lines(...)
    

And I get an attribute error that really confuses me:

    
    
    AttributeError: type object 'NewPdb' has no attribute '_PdbLig__get_except_lines'
    


Answer: Your problem is due to Python name mangling for private variable
(<http://docs.python.org/2/tutorial/classes.html#private-variables-and-class-
local-references>). You should write:

    
    
    NewPdb._NewPdb__get_except_lines(...)
    

