SF #989185: Drop unicode.iswide() and unicode.width() and add

unicodedata.east_asian_width().  You can still implement your own
simple width() function using it like this:
    def width(u):
        w = 0
        for c in unicodedata.normalize('NFC', u):
            cwidth = unicodedata.east_asian_width(c)
            if cwidth in ('W', 'F'): w += 2
            else: w += 1
        return w

1 files changed, 11 insertions, 0 deletions

diff --git a/Lib/test/test_unicodedata.py b/Lib/test/test_unicodedata.py
index 8157fb3..0bbabb1 100644
--- a/Lib/test/test_unicodedata.py
+++ b/Lib/test/test_unicodedata.py
@@ -174,6 +174,17 @@ class UnicodeFunctionsTest(UnicodeDatabaseTest):
         # The rest can be found in test_normalization.py
         # which requires an external file.
 
+    def test_east_asian_width(self):
+        eaw = self.db.east_asian_width
+        self.assertRaises(TypeError, eaw, 'a')
+        self.assertRaises(TypeError, eaw, u'')
+        self.assertRaises(TypeError, eaw, u'ra')
+        self.assertEqual(eaw(u'\x1e'), 'N')
+        self.assertEqual(eaw(u'\x20'), 'Na')
+        self.assertEqual(eaw(u'\uC894'), 'W')
+        self.assertEqual(eaw(u'\uFF66'), 'H')
+        self.assertEqual(eaw(u'\uFF1F'), 'F')
+        self.assertEqual(eaw(u'\u2010'), 'A')
 
 class UnicodeMiscTest(UnicodeDatabaseTest):