win32 binary data manipulation in ASP

[Joe Smith]

I am trying to write a server side ASP script in python.

    buffer = os.read(fd, numBytes)
    Response.BinaryWrite(buffer)

I notice that I am getting exactly double the number of bytes on output.  I
suspect that the string returned from os.read() is getting converted to
unicode.

I am looking for a way to convert the string to an array of bytes, not an array
of unicode characters.