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| -rw-r--r-- | Doc/library/functions.rst | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst index 208f2f8..8e07673 100644 --- a/Doc/library/functions.rst +++ b/Doc/library/functions.rst @@ -105,11 +105,15 @@ are always available. They are listed here in alphabetical order. .. function:: chr(i) - Return the string of one character whose Unicode codepoint is the integer + Return the string representing a character whose Unicode codepoint is the integer *i*. For example, ``chr(97)`` returns the string ``'a'``. This is the - inverse of :func:`ord`. The valid range for the argument depends how Python - was configured -- it may be either UCS2 [0..0xFFFF] or UCS4 [0..0x10FFFF]. - :exc:`ValueError` will be raised if *i* is outside that range. + inverse of :func:`ord`. The valid range for the argument is from 0 through + 1,114,111 (0x10FFFF in base 16). :exc:`ValueError` will be raised if *i* is + outside that range. + + Note that on narrow Unicode builds, the result is a string of + length two for *i* greater than 65,535 (0xFFFF in hexadecimal). + .. function:: classmethod(function) @@ -811,14 +815,14 @@ are always available. They are listed here in alphabetical order. .. XXX works for bytes too, but should it? .. function:: ord(c) - Given a string of length one, return an integer representing the Unicode code - point of the character. For example, ``ord('a')`` returns the integer ``97`` + Given a string representing one Uncicode character, return an integer + representing the Unicode code + point of that character. For example, ``ord('a')`` returns the integer ``97`` and ``ord('\u2020')`` returns ``8224``. This is the inverse of :func:`chr`. - If the argument length is not one, a :exc:`TypeError` will be raised. (If - Python was built with UCS2 Unicode, then the character's code point must be - in the range [0..65535] inclusive; otherwise the string length is two!) - + On wide Unicode builds, if the argument length is not one, a + :exc:`TypeError` will be raised. On narrow Unicode builds, strings + of length two are accepted when they form a UTF-16 surrogate pair. .. function:: pow(x, y[, z]) |