diff options
| -rw-r--r-- | Doc/library/stdtypes.rst | 10 | ||||
| -rw-r--r-- | Lib/test/test_unicode.py | 13 |
2 files changed, 19 insertions, 4 deletions
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst index 9dd557f..08c5ae8 100644 --- a/Doc/library/stdtypes.rst +++ b/Doc/library/stdtypes.rst @@ -1763,9 +1763,13 @@ expression support in the :mod:`re` module). .. method:: str.isspace() Return true if there are only whitespace characters in the string and there is - at least one character, false otherwise. Whitespace characters are those - characters defined in the Unicode character database as "Other" or "Separator" - and those with bidirectional property being one of "WS", "B", or "S". + at least one character, false otherwise. + + A character is *whitespace* if in the Unicode character database + (see :mod:`unicodedata`), either its general category is ``Zs`` + ("Separator, space"), or its bidirectional class is one of ``WS``, + ``B``, or ``S``. + .. method:: str.istitle() diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py index 8be16c8..7bd7f51 100644 --- a/Lib/test/test_unicode.py +++ b/Lib/test/test_unicode.py @@ -12,6 +12,7 @@ import operator import struct import sys import textwrap +import unicodedata import unittest import warnings from test import support, string_tests @@ -617,11 +618,21 @@ class UnicodeTest(string_tests.CommonTest, self.checkequalnofix(True, '\u2000', 'isspace') self.checkequalnofix(True, '\u200a', 'isspace') self.checkequalnofix(False, '\u2014', 'isspace') - # apparently there are no non-BMP spaces chars in Unicode 6 + # There are no non-BMP whitespace chars as of Unicode 12. for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E', '\U0001F40D', '\U0001F46F']: self.assertFalse(ch.isspace(), '{!a} is not space.'.format(ch)) + @support.requires_resource('cpu') + def test_isspace_invariant(self): + for codepoint in range(sys.maxunicode + 1): + char = chr(codepoint) + bidirectional = unicodedata.bidirectional(char) + category = unicodedata.category(char) + self.assertEqual(char.isspace(), + (bidirectional in ('WS', 'B', 'S') + or category == 'Zs')) + def test_isalnum(self): super().test_isalnum() for ch in ['\U00010401', '\U00010427', '\U00010429', '\U0001044E', |