On 10/6/13 6:47 PM, Robert Jackson wrote:
I am very new to python so I'll apologize up front if this is some
boneheaded thing. I am using python and pyserial to talk to an
embedded pic processor in a piece of scientific equipment. I
sometimes find the when I construct the bytes object to write it adds
an extra f to the first byte.
For example if I have b'\x03\x66\x02\x01\xaa\xbb' it evaluates
to b'\x03f\x02\x01\xaa\xbb', which doesn't even seem valid.
Can anyone shine some light this?
b'\x66' == b'f' . The hex for "f" is 66. The f isn't inserted, it's
the second byte of your string. When Python displays a string, is uses
the ASCII character if it can, and a hex escape if it can't. When you
use a hex value that is a valid ASCII character, it will display the
character.
--Ned.
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