On 2021-05-25 16:41, Dennis Lee Bieber wrote:
On Tue, 25 May 2021 10:23:41 +0200, hw <h...@adminart.net> declaimed the
following:
So I'm forced to convert stuff from bytes to strings (which is weird
because bytes are bytes) and to use regular expressions to extract the
message-uids from what the functions return (which I shouldn't have to
because when I'm asking a function to give me a uid, I expect it to
return a uid).
In Python 3, strings are UNICODE, using 1, 2, or 4 bytes PER CHARACTER
(I don't recall if there is a 3-byte version). If your input bytes are all
7-bit ASCII, then they map directly to a 1-byte per character string. If
they contain any 8-bit upper half character they may map into a 2-byte per
character string.
In CPython 3.3+:
U+0000..U+00FF are stored in 1 byte.
U+0100..U+FFFF are stored in 2 bytes.
U+010000..U+10FFFF are stored in 4 bytes.
Bytes in Python 3 are just a binary stream, which needs an encoding to
produce characters. Use the wrong encoding (say ISO-Latin-1) when the data
is really UTF-8 will result in garbage.
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