global name 'self' is not defined - noob trying to learn

[Jan Decaluwe]

mark.seagoe at gmail.com wrote:

> Python 2.5.3 for business reasons.
> 
> So I want a class ShadowRegister, which just has a value that I can do
> get/set bit sel and slice ops.  I got that working with __init__.  It
> was subclass from "object".  Then I wanted a RegisterClass that was a
> subclass of ShadowRegister, which would read a hardware register
> before doing get bit sel/slices, or read HW reg, do set bit sel/slice,
> but when I try to print in hex format ('0x016X') it said it required
> an int (but the ShadowRegister class had no issues).  Then I was told
> instead of using object I could subclass as long (seemed the only
> solution for Python 2.5).  Then when I started to want to add my own
> init code (like register length in bits), I was told I should use
> __new__ instead of __init__.  So but ever since then I've noticed that
> my value is not changing from the initially set value.  I'm really
> cornfused now.

In the past, someone referred you to the intbv class in MyHDL.
You mentioned that it does "more than you want".
However, it seems to me that what intbv really does, is to solve
the kind of issues that you are struggling with. Perhaps
you want to look at it again.

Jan

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