Casting and module "array"
Edward C. Jones
edcjones at erols.com
Sun Dec 31 01:05:27 EST 2000
Is there a better way to cast arrays made from module "array"?
Turning a large array into a list would seem to be slow.
def cast(typecode, arr):
return array.array(typecode, list(arr))
if __name__ == '__main__':
Barr = array.array('B', [0, 1, 254, 255])
harr = cast('h', Barr)
barr = cast('b', Barr) # Fails.
I would use "astype" from Numeric (aka NumPy) instead but NumPy
doesn't support unsigned short or unsigned long.
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