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• File pySim/global_platform.py:

  • Patch Set #1, Line 262: intermediate = False

    Something that only exists in CardApplicationSD but not any derived classes.

    This can be done by making `intermediate` private by renaming it to `__intermediate`.
    This prefix makes fields and methods somewhat special:

    ```
    class Parent:
        # this field can be accessed as self.__intermediate by methods of this class,
        # but not by methods of child classes and not from the outside
        __intermediate = True

    class Child(Parent):
        pass
        
    >>> Parent.__intermediate  # yields AttributeError
    >>> Child.__intermediate  # yields AttributeError

    >>> Parent._Parent__intermediate # True
    >>> Child._Parent__intermediate # True
    >>> Child._Child__intermediate # yields AttributeError
    ```

    As can be seen, `Child` class still does inherit field `__intermediate`, but Python prepends the parent class name to it. So you can use this when iterating over the sub-classes of `CardApplication`:

    ```
    if hasattr(app_cls, '_' + app_cls.__name__ + '__intermediate'):
        continue  # skip intermediate classes
    ```

    See also: https://stackoverflow.com/questions/20261517/inheritance-of-private-and-protected-methods-in-python.

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