Simplify the unicode type test for python 3

waflib/Logs.py

@@ -6,7 +6,7 @@
 logging, colors, terminal width and pretty-print
 """
 
-import os, re, traceback, sys, types
+import os, re, traceback, sys
 from waflib import Utils, ansiterm
 
 if not os.environ.get('NOSYNC', False):
@@ -43,6 +43,11 @@ colors_lst = {
 
 indicator = '\r\x1b[K%s%s%s'
 
+try:
+	unicode
+except NameError:
+	unicode = None
+
 def enable_colors(use):
 	if use == 1:
 		if not (sys.stderr.isatty() or sys.stdout.isatty()):
@@ -150,7 +155,7 @@ class log_handler(logging.StreamHandler):
 	def emit_override(self, record, **kw):
 		self.terminator = getattr(record, 'terminator', '\n')
 		stream = self.stream
-		if hasattr(types, "UnicodeType"):
+		if unicode:
 			# python2
 			msg = self.formatter.format(record)
 			fs = '%s' + self.terminator