On 14/6/2013 4:58 μμ, Nick the Gr33k wrote:
On 14/6/2013 1:14 μμ, Cameron Simpson wrote:
Normally a character in a b'...' item represents the byte value
matching the character's Unicode ordinal value.
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 ?
> No, I mean conceptually, there is no difference between a code-point
> and its ordinal value. They are the same thing.
Why Unicode charset doesn't just contain characters, but instead it
contains a mapping of (characters <--> ordinals) ?
I mean what we do is to encode a character like chr(65).encode('utf-8')
What's the reason of existence of its corresponding ordinal value since
it doesn't get involved into the encoding process?
Thank you very much for taking the time to explain.
Can someone please explain these questions too?
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