Eryk Sun <[email protected]> added the comment:
> \N{name} : named character
> \UXXXXXXXX : 32-bit hexadecimal ordinal (e.g. \U0010ffff)
> \uXXXX : 16-bit hexadecimal ordinal (e.g. \uffff)
> \xXX : 8-bit hexadecimal ordinal (e.g. \xff)
> \OOO : 9-bit octal ordinal (e.g. \777)
> \OO : 6-bit octal ordinal (e.g. \77)
> \O : 3-bit octal ordinal (e.g. \7)
Note that bytes literals do not implement \N, \U, and \u escape sequences --
e.g. b'\N{SPACE}' is literally just those 9 bytes, not b' '. Also, in bytes
literals 9-bit octal sequences wrap around for the [256, 511] range -- e.g.
b'\400' == b'\000' == b'\x00' and b'\777' == b'\377' == b'\xff'. I don't know
whether the latter is intentional. I'd prefer for the compiler to raise a
syntax error in this case. Asking for a byte value in the range [256, 511] is
nonsense.
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<https://bugs.python.org/issue37939>
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