diff --git a/Tools/unicode/makeunicodedata.py b/Tools/unicode/makeunicodedata.py
index 93b3937..885e559 100644
--- a/Tools/unicode/makeunicodedata.py
+++ b/Tools/unicode/makeunicodedata.py
@@ -60,7 +60,6 @@
 UPPER_MASK = 0x80
 XID_START_MASK = 0x100
 XID_CONTINUE_MASK = 0x200
-NONPRINTABLE_MASK = 0x400
 
 def maketables(trace=0):
 
@@ -72,7 +71,7 @@
                           EASTASIAN_WIDTH % version,
                           DERIVED_CORE_PROPERTIES % version)
 
-    print(len(list(filter(None, unicode.table))), "characters")
+    print(len(filter(None, unicode.table)), "characters")
 
     for version in old_versions:
         print("--- Reading", UNICODE_DATA % ("-"+version), "...")
@@ -80,7 +79,7 @@
                                   COMPOSITION_EXCLUSIONS % ("-"+version),
                                   EASTASIAN_WIDTH % ("-"+version),
                                   DERIVED_CORE_PROPERTIES % ("-"+version))
-        print(len(list(filter(None, old_unicode.table))), "characters")
+        print(len(filter(None, old_unicode.table)), "characters")
         merge_old_version(version, unicode, old_unicode)
 
     makeunicodename(unicode, trace)
@@ -372,10 +371,6 @@
                 flags |= TITLE_MASK
             if category == "Lu":
                 flags |= UPPER_MASK
-            if category[0] == "C":
-                flags |= NONPRINTABLE_MASK
-            if category[0] == "Z" and char != " ":
-                flags |= NONPRINTABLE_MASK
             if "XID_Start" in properties:
                 flags |= XID_START_MASK
             if "XID_Continue" in properties:
@@ -470,7 +465,7 @@
             if name and name[0] != "<":
                 names[char] = name + chr(0)
 
-    print(len(list(n for n in names if n is not None)), "distinct names")
+    print(len(n for n in names if n is not None), "distinct names")
 
     # collect unique words from names (note that we differ between
     # words inside a sentence, and words ending a sentence.  the