On Sat, Jun 15, 2013 at 10:35 PM, Benjamin Schollnick
<benja...@schollnick.net> wrote:
> Nick,
>
> The only thing that i didn't understood is this line.
> First please tell me what is a byte value
>
> \x1b is a sequence you find inside strings (and "byte" strings, the
> b'...' format).
>
>
> \x1b is a character(ESC) represented in hex format
>
> b'\x1b' is a byte object that represents what?
>
>
>>>> chr(27).encode('utf-8')
> b'\x1b'
>
>>>> b'\x1b'.decode('utf-8')
> '\x1b'
>
> After decoding it gives the char ESC in hex format
> Shouldn't it result in value 27 which is the ordinal of ESC ?
>
>
> I'm sorry are you not listening?
>
> 1b is a HEXADECIMAL Number. As a so-called programmer, did you seriously
> not consider that?
>
> Try this:
>
> 1) Open a Web browser
> 2) Go to Google.com
> 3) Type in "Hex 1B"
> 4) Click on the first link
> 5) In the Hexadecimal column find 1B.
>
> Or open your favorite calculator, and convert Hexadecimal 1B to Decimal
> (Base 10).
>
> - Benjamin
>
>
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
Better: a programmer should know how to convert hexadecimal to decimal.
0x1B = (0x1 * 16^1) + (0xB * 16^0) = (1 * 16) + (11 * 1) = 16 + 11 = 27
It’s that easy, and a programmer should be able to do that in their
brain, at least with small numbers. Or at least know that:
http://lmgtfy.com/?q=0x1B+in+decimal
Or at least `hex(27)`; or '`{:X}'.format(27)`; or `'%X' % 27`. (I
despise hex numbers with lowercase letters, but that’s my personal
opinion.)
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