fix isprintable() on space characters #5126

Lib/test/test_unicode.py

@@ -424,6 +424,7 @@ class UnicodeTest(
 
     def test_isprintable(self):
         self.assertTrue("".isprintable())
+        self.assertTrue(" ".isprintable())
         self.assertTrue("abcdefg".isprintable())
         self.assertFalse("abcdefg\n".isprintable())
         # some defined Unicode character

Misc/NEWS

@@ -12,6 +12,8 @@ What's New in Python 3.1 alpha 2?
 Core and Builtins
 -----------------
 
+- Issue #5126: str.isprintable() returned False for space characters.
+
 - Issue #4688: Add a heuristic so that tuples and dicts containing only
   untrackable objects are not tracked by the garbage collector. This can
   reduce the size of collections and therefore the garbage collection overhead

Tools/unicode/makeunicodedata.py

@@ -375,7 +375,7 @@ def makeunicodetype(unicode, trace):
                 flags |= TITLE_MASK
             if category == "Lu":
                 flags |= UPPER_MASK
-            if char == " " or category[0] not in ("C", "Z"):
+            if char == ord(" ") or category[0] not in ("C", "Z"):
                 flags |= PRINTABLE_MASK
             if "XID_Start" in properties:
                 flags |= XID_START_MASK