.. 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()
import struct
import sys
import textwrap
+import unicodedata
import unittest
import warnings
from test import support, string_tests
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',