numpy.frombuffer != unpack() ??

[Marlin Rowley]

All:
 
I'm getting different floating point values when I use numpy vs. unpack().
 
frgba = numpy.frombuffer(<string of bytes>, dtype=float32)
buffer = unpack("!f", byte)
 
frgba[0] != buffer[0]
 
why?  This is forcing me use the unpack() function since it's giving me the correct values.  What am I doing wrong?
 
-M
 
 
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