[tools] More on py3 compatibility

src/gen-tag-table.py

@@ -19,13 +19,8 @@ case, the fallback behavior will choose the right tag anyway.
 """
 
 import collections
-try:
+from html.parser import HTMLParser
-	from HTMLParser import HTMLParser
+def write (s):
-	def write (s):
-		print (s.encode ('utf-8'), end='')
-except ImportError:
-	from html.parser import HTMLParser
-	def write (s):
 	sys.stdout.flush ()
 	sys.stdout.buffer.write (s.encode ('utf-8'))
 import io
@@ -42,13 +37,9 @@ Input files, as of Unicode 12:
 * https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry''', file=sys.stderr)
 	sys.exit (1)
 
-try:
+from html import unescape
-	from html import unescape
+def html_unescape (parser, entity):
-	def html_unescape (parser, entity):
 	return unescape (entity)
-except ImportError:
-	def html_unescape (parser, entity):
-		return parser.unescape (entity)
 
 def expect (condition, message=None):
 	if not condition:

src/gen-vowel-constraints.py

@@ -10,13 +10,8 @@ This function should be used as the ``preprocess_text`` of an
 """
 
 import collections
-try:
+from html.parser import HTMLParser
-	from HTMLParser import HTMLParser
+def write (s):
-	def write (s):
-		print (s.encode ('utf-8'), end='')
-except ImportError:
-	from html.parser import HTMLParser
-	def write (s):
 	sys.stdout.flush ()
 	sys.stdout.buffer.write (s.encode ('utf-8'))
 import itertools

test/shaping/hb-diff

@@ -4,7 +4,7 @@ from hb_test_tools import *
 import sys, os
 
 if len (sys.argv) < 2:
-	print "usage: %s FILES..." % sys.argv[0]
+	print ("usage: %s FILES..." % sys.argv[0])
 	sys.exit (1)
 
 ZipDiffer.diff_files (FileHelpers.open_file_or_stdin (f) for f in sys.argv[1:])

test/shaping/hb_test_tools.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 
-import sys, os, re, difflib, unicodedata, errno, cgi
+import sys, os, re, difflib, unicodedata, errno, cgi, itertools
 from itertools import *
 try:
 	import unicodedata2 as unicodedata
@@ -139,7 +139,7 @@ class ZipDiffer:
 	def diff_files (files, symbols=diff_symbols):
 		files = tuple (files) # in case it's a generator, copy it
 		try:
-			for lines in izip_longest (*files):
+			for lines in itertools.zip_longest (*files):
 				if all (lines[0] == line for line in lines[1:]):
 					sys.stdout.writelines ([" ", lines[0]])
 					continue
@@ -433,7 +433,7 @@ class Unicode:
 		s = re.sub (r"[<+>\\uU]", " ", s)
 		s = re.sub (r"0[xX]", " ", s)
 		s = [chr (int (x, 16)) for x in re.split ('[, \n]', s) if len (x)]
-		return ' + '.join (Unicode.pretty_name (x) for x in s).encode ('utf-8')
+		return ' + '.join (Unicode.pretty_name (x) for x in s)
 
 
 class FileHelpers: