On 01/15/2016 05:08 PM, Tim Chase wrote:
[sorry, toddler on my lap clicked <send> before I could type]

import struct
with open('toto', 'wb') as f: f.write(struct.pack('<4B', *[1,2,3,4]))

This one does what you want.  The problem resides in your check:

I always end up with the following bytes on file:
!hexdump toto
0000000 0201 0403

Hexdump is grouping them.  Try the canonical format:

  !hexdump -C toto
  00000000  01 02 03 04              |....|
  00000004


-tkc

Great ! thank you, (and Bartc).

jm





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