Re: [pygame] Simple Surfarray Alpha

[Lenard Lindstrom <len-l@xxxxxxxxx>]

Then you are using Numeric, not NumPy. That's strange, because I was 
getting a different error message for Numeric with Python 2.5. With 2.4 
it is the same as yours. Numeric does a silent upcast of its type, so 
you end up trying to assign an array of 4 byte integers to an array of 
bytes. To combat the upcasting try this before the assignment:

array.savespace(1)

By the way, NumPy doesn't do this automatic upcasting. It was a source 
of frustration at first since it subtly broke the Pygame surfarray 
example. But I see now why the change.

Lenard


Ian Mallett wrote:
> The first line gives:
> (300, 400) (16711680, 65280, 255, -16777216) (16, 8, 0, 24)
> The second crashes with an AttributeError at "dtype".