Whitespace normalization.  Leaving tokenize_tests.py alone for now.
diff --git a/Lib/test/test_xreadline.py b/Lib/test/test_xreadline.py
index 6f2de7e..eab8a60 100644
--- a/Lib/test/test_xreadline.py
+++ b/Lib/test/test_xreadline.py
@@ -1,12 +1,12 @@
 from test_support import verbose
 
 class XReader:
-	def __init__(self):
-		self.count = 5
+    def __init__(self):
+        self.count = 5
 
-	def readlines(self, sizehint = None):
-		self.count = self.count - 1
-		return map(lambda x: "%d\n" % x, range(self.count))
+    def readlines(self, sizehint = None):
+        self.count = self.count - 1
+        return map(lambda x: "%d\n" % x, range(self.count))
 
 class Null: pass
 
@@ -16,28 +16,28 @@
 lineno = 0
 
 try:
-	xreadlines.xreadlines(Null())[0]
+    xreadlines.xreadlines(Null())[0]
 except AttributeError, detail:
-	print "AttributeError (expected)"
+    print "AttributeError (expected)"
 else:
-	print "Did not throw attribute error"
+    print "Did not throw attribute error"
 
 try:
-	xreadlines.xreadlines(XReader)[0]
+    xreadlines.xreadlines(XReader)[0]
 except TypeError, detail:
-	print "TypeError (expected)"
+    print "TypeError (expected)"
 else:
-	print "Did not throw type error"
+    print "Did not throw type error"
 
 try:
-	xreadlines.xreadlines(XReader())[1]
+    xreadlines.xreadlines(XReader())[1]
 except RuntimeError, detail:
-	print "RuntimeError (expected):", detail
+    print "RuntimeError (expected):", detail
 else:
-	print "Did not throw runtime error"
+    print "Did not throw runtime error"
 
 xresult = ['0\n', '1\n', '2\n', '3\n', '0\n', '1\n', '2\n', '0\n', '1\n', '0\n']
 for line in xreadlines.xreadlines(XReader()):
-	if line != xresult[lineno]:
-	    print "line %d differs" % lineno
-	lineno += 1
+    if line != xresult[lineno]:
+        print "line %d differs" % lineno
+    lineno += 1