Use more appropriate asserts in re tests.

1 files changed, 115 insertions, 115 deletions

diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py
index b426f9f..c650f7a 100644
--- a/Lib/test/test_re.py
+++ b/Lib/test/test_re.py
@@ -59,12 +59,12 @@ class ReTests(unittest.TestCase):
         self.assertEqual(re.search('x*', 'axx').span(), (0, 0))
         self.assertEqual(re.search('x+', 'axx').span(0), (1, 3))
         self.assertEqual(re.search('x+', 'axx').span(), (1, 3))
-        self.assertEqual(re.search('x', 'aaa'), None)
+        self.assertIsNone(re.search('x', 'aaa'))
         self.assertEqual(re.match('a*', 'xxx').span(0), (0, 0))
         self.assertEqual(re.match('a*', 'xxx').span(), (0, 0))
         self.assertEqual(re.match('x*', 'xxxa').span(0), (0, 3))
         self.assertEqual(re.match('x*', 'xxxa').span(), (0, 3))
-        self.assertEqual(re.match('a+', 'xxx'), None)
+        self.assertIsNone(re.match('a+', 'xxx'))
 
     def bump_num(self, matchobj):
         int_value = int(matchobj.group(0))
@@ -384,8 +384,8 @@ class ReTests(unittest.TestCase):
                          ('(', 'a'))
         self.assertEqual(re.match('^(\()?([^()]+)(?(1)\))$', 'a').groups(),
                          (None, 'a'))
-        self.assertEqual(re.match('^(\()?([^()]+)(?(1)\))$', 'a)'), None)
-        self.assertEqual(re.match('^(\()?([^()]+)(?(1)\))$', '(a'), None)
+        self.assertIsNone(re.match('^(\()?([^()]+)(?(1)\))$', 'a)'))
+        self.assertIsNone(re.match('^(\()?([^()]+)(?(1)\))$', '(a'))
         self.assertEqual(re.match('^(?:(a)|c)((?(1)b|d))$', 'ab').groups(),
                          ('a', 'b'))
         self.assertEqual(re.match('^(?:(a)|c)((?(1)b|d))$', 'cd').groups(),
@@ -401,8 +401,8 @@ class ReTests(unittest.TestCase):
                          ('a', 'b', 'c'))
         self.assertEqual(p.match('ad').groups(),
                          ('a', None, 'd'))
-        self.assertEqual(p.match('abd'), None)
-        self.assertEqual(p.match('ac'), None)
+        self.assertIsNone(p.match('abd'))
+        self.assertIsNone(p.match('ac'))
 
 
     def test_re_groupref(self):
@@ -410,8 +410,8 @@ class ReTests(unittest.TestCase):
                          ('|', 'a'))
         self.assertEqual(re.match(r'^(\|)?([^()]+)\1?$', 'a').groups(),
                          (None, 'a'))
-        self.assertEqual(re.match(r'^(\|)?([^()]+)\1$', 'a|'), None)
-        self.assertEqual(re.match(r'^(\|)?([^()]+)\1$', '|a'), None)
+        self.assertIsNone(re.match(r'^(\|)?([^()]+)\1$', 'a|'))
+        self.assertIsNone(re.match(r'^(\|)?([^()]+)\1$', '|a'))
         self.assertEqual(re.match(r'^(?:(a)|c)(\1)$', 'aa').groups(),
                          ('a', 'a'))
         self.assertEqual(re.match(r'^(?:(a)|c)(\1)?$', 'c').groups(),
@@ -429,10 +429,10 @@ class ReTests(unittest.TestCase):
                          "second first second first")
 
     def test_repeat_minmax(self):
-        self.assertEqual(re.match("^(\w){1}$", "abc"), None)
-        self.assertEqual(re.match("^(\w){1}?$", "abc"), None)
-        self.assertEqual(re.match("^(\w){1,2}$", "abc"), None)
-        self.assertEqual(re.match("^(\w){1,2}?$", "abc"), None)
+        self.assertIsNone(re.match("^(\w){1}$", "abc"))
+        self.assertIsNone(re.match("^(\w){1}?$", "abc"))
+        self.assertIsNone(re.match("^(\w){1,2}$", "abc"))
+        self.assertIsNone(re.match("^(\w){1,2}?$", "abc"))
 
         self.assertEqual(re.match("^(\w){3}$", "abc").group(1), "c")
         self.assertEqual(re.match("^(\w){1,3}$", "abc").group(1), "c")
@@ -443,22 +443,22 @@ class ReTests(unittest.TestCase):
         self.assertEqual(re.match("^(\w){1,4}?$", "abc").group(1), "c")
         self.assertEqual(re.match("^(\w){3,4}?$", "abc").group(1), "c")
 
-        self.assertEqual(re.match("^x{1}$", "xxx"), None)
-        self.assertEqual(re.match("^x{1}?$", "xxx"), None)
-        self.assertEqual(re.match("^x{1,2}$", "xxx"), None)
-        self.assertEqual(re.match("^x{1,2}?$", "xxx"), None)
+        self.assertIsNone(re.match("^x{1}$", "xxx"))
+        self.assertIsNone(re.match("^x{1}?$", "xxx"))
+        self.assertIsNone(re.match("^x{1,2}$", "xxx"))
+        self.assertIsNone(re.match("^x{1,2}?$", "xxx"))
 
-        self.assertNotEqual(re.match("^x{3}$", "xxx"), None)
-        self.assertNotEqual(re.match("^x{1,3}$", "xxx"), None)
-        self.assertNotEqual(re.match("^x{1,4}$", "xxx"), None)
-        self.assertNotEqual(re.match("^x{3,4}?$", "xxx"), None)
-        self.assertNotEqual(re.match("^x{3}?$", "xxx"), None)
-        self.assertNotEqual(re.match("^x{1,3}?$", "xxx"), None)
-        self.assertNotEqual(re.match("^x{1,4}?$", "xxx"), None)
-        self.assertNotEqual(re.match("^x{3,4}?$", "xxx"), None)
+        self.assertTrue(re.match("^x{3}$", "xxx"))
+        self.assertTrue(re.match("^x{1,3}$", "xxx"))
+        self.assertTrue(re.match("^x{1,4}$", "xxx"))
+        self.assertTrue(re.match("^x{3,4}?$", "xxx"))
+        self.assertTrue(re.match("^x{3}?$", "xxx"))
+        self.assertTrue(re.match("^x{1,3}?$", "xxx"))
+        self.assertTrue(re.match("^x{1,4}?$", "xxx"))
+        self.assertTrue(re.match("^x{3,4}?$", "xxx"))
 
-        self.assertEqual(re.match("^x{}$", "xxx"), None)
-        self.assertNotEqual(re.match("^x{}$", "x{}"), None)
+        self.assertIsNone(re.match("^x{}$", "xxx"))
+        self.assertTrue(re.match("^x{}$", "x{}"))
 
     def test_getattr(self):
         self.assertEqual(re.compile("(?i)(a)(b)").pattern, "(?i)(a)(b)")
@@ -472,7 +472,7 @@ class ReTests(unittest.TestCase):
         self.assertEqual(re.match("(a)", "a").endpos, 1)
         self.assertEqual(re.match("(a)", "a").string, "a")
         self.assertEqual(re.match("(a)", "a").regs, ((0, 1), (0, 1)))
-        self.assertNotEqual(re.match("(a)", "a").re, None)
+        self.assertTrue(re.match("(a)", "a").re)
 
     def test_special_escapes(self):
         self.assertEqual(re.search(r"\b(b.)\b",
@@ -489,7 +489,7 @@ class ReTests(unittest.TestCase):
                                    "abc bcd bc abxd", re.LOCALE).group(1), "bx")
         self.assertEqual(re.search(r"^abc$", "\nabc\n", re.M).group(0), "abc")
         self.assertEqual(re.search(r"^\Aabc\Z$", "abc", re.M).group(0), "abc")
-        self.assertEqual(re.search(r"^\Aabc\Z$", "\nabc\n", re.M), None)
+        self.assertIsNone(re.search(r"^\Aabc\Z$", "\nabc\n", re.M))
         self.assertEqual(re.search(br"\b(b.)\b",
                                    b"abcd abc bcd bx").group(1), b"bx")
         self.assertEqual(re.search(br"\B(b.)\B",
@@ -500,7 +500,7 @@ class ReTests(unittest.TestCase):
                                    b"abc bcd bc abxd", re.LOCALE).group(1), b"bx")
         self.assertEqual(re.search(br"^abc$", b"\nabc\n", re.M).group(0), b"abc")
         self.assertEqual(re.search(br"^\Aabc\Z$", b"abc", re.M).group(0), b"abc")
-        self.assertEqual(re.search(br"^\Aabc\Z$", b"\nabc\n", re.M), None)
+        self.assertIsNone(re.search(br"^\Aabc\Z$", b"\nabc\n", re.M))
         self.assertEqual(re.search(r"\d\D\w\W\s\S",
                                    "1aa! a").group(0), "1aa! a")
         self.assertEqual(re.search(br"\d\D\w\W\s\S",
@@ -524,10 +524,10 @@ class ReTests(unittest.TestCase):
         self.assertFalse(re.match(r"\B", "abc"))
         # However, an empty string contains no word boundaries, and also no
         # non-boundaries.
-        self.assertEqual(re.search(r"\B", ""), None)
+        self.assertIsNone(re.search(r"\B", ""))
         # This one is questionable and different from the perlre behaviour,
         # but describes current behavior.
-        self.assertEqual(re.search(r"\b", ""), None)
+        self.assertIsNone(re.search(r"\b", ""))
         # A single word-character string has two boundaries, but no
         # non-boundary gaps.
         self.assertEqual(len(re.findall(r"\b", "a")), 2)
@@ -547,8 +547,8 @@ class ReTests(unittest.TestCase):
     def test_big_codesize(self):
         # Issue #1160
         r = re.compile('|'.join(('%d'%x for x in range(10000))))
-        self.assertIsNotNone(r.match('1000'))
-        self.assertIsNotNone(r.match('9999'))
+        self.assertTrue(r.match('1000'))
+        self.assertTrue(r.match('9999'))
 
     def test_anyall(self):
         self.assertEqual(re.match("a.b", "a\nb", re.DOTALL).group(0),
@@ -674,29 +674,29 @@ class ReTests(unittest.TestCase):
 
     def test_flags(self):
         for flag in [re.I, re.M, re.X, re.S, re.L]:
-            self.assertNotEqual(re.compile('^pattern$', flag), None)
+            self.assertTrue(re.compile('^pattern$', flag))
 
     def test_sre_character_literals(self):
         for i in [0, 8, 16, 32, 64, 127, 128, 255, 256, 0xFFFF, 0x10000, 0x10FFFF]:
             if i < 256:
-                self.assertIsNotNone(re.match(r"\%03o" % i, chr(i)))
-                self.assertIsNotNone(re.match(r"\%03o0" % i, chr(i)+"0"))
-                self.assertIsNotNone(re.match(r"\%03o8" % i, chr(i)+"8"))
-                self.assertIsNotNone(re.match(r"\x%02x" % i, chr(i)))
-                self.assertIsNotNone(re.match(r"\x%02x0" % i, chr(i)+"0"))
-                self.assertIsNotNone(re.match(r"\x%02xz" % i, chr(i)+"z"))
+                self.assertTrue(re.match(r"\%03o" % i, chr(i)))
+                self.assertTrue(re.match(r"\%03o0" % i, chr(i)+"0"))
+                self.assertTrue(re.match(r"\%03o8" % i, chr(i)+"8"))
+                self.assertTrue(re.match(r"\x%02x" % i, chr(i)))
+                self.assertTrue(re.match(r"\x%02x0" % i, chr(i)+"0"))
+                self.assertTrue(re.match(r"\x%02xz" % i, chr(i)+"z"))
             if i < 0x10000:
-                self.assertIsNotNone(re.match(r"\u%04x" % i, chr(i)))
-                self.assertIsNotNone(re.match(r"\u%04x0" % i, chr(i)+"0"))
-                self.assertIsNotNone(re.match(r"\u%04xz" % i, chr(i)+"z"))
-            self.assertIsNotNone(re.match(r"\U%08x" % i, chr(i)))
-            self.assertIsNotNone(re.match(r"\U%08x0" % i, chr(i)+"0"))
-            self.assertIsNotNone(re.match(r"\U%08xz" % i, chr(i)+"z"))
-        self.assertIsNotNone(re.match(r"\0", "\000"))
-        self.assertIsNotNone(re.match(r"\08", "\0008"))
-        self.assertIsNotNone(re.match(r"\01", "\001"))
-        self.assertIsNotNone(re.match(r"\018", "\0018"))
-        self.assertIsNotNone(re.match(r"\567", chr(0o167)))
+                self.assertTrue(re.match(r"\u%04x" % i, chr(i)))
+                self.assertTrue(re.match(r"\u%04x0" % i, chr(i)+"0"))
+                self.assertTrue(re.match(r"\u%04xz" % i, chr(i)+"z"))
+            self.assertTrue(re.match(r"\U%08x" % i, chr(i)))
+            self.assertTrue(re.match(r"\U%08x0" % i, chr(i)+"0"))
+            self.assertTrue(re.match(r"\U%08xz" % i, chr(i)+"z"))
+        self.assertTrue(re.match(r"\0", "\000"))
+        self.assertTrue(re.match(r"\08", "\0008"))
+        self.assertTrue(re.match(r"\01", "\001"))
+        self.assertTrue(re.match(r"\018", "\0018"))
+        self.assertTrue(re.match(r"\567", chr(0o167)))
         self.assertRaises(re.error, re.match, r"\911", "")
         self.assertRaises(re.error, re.match, r"\x1", "")
         self.assertRaises(re.error, re.match, r"\x1z", "")
@@ -709,22 +709,22 @@ class ReTests(unittest.TestCase):
     def test_sre_character_class_literals(self):
         for i in [0, 8, 16, 32, 64, 127, 128, 255, 256, 0xFFFF, 0x10000, 0x10FFFF]:
             if i < 256:
-                self.assertIsNotNone(re.match(r"[\%o]" % i, chr(i)))
-                self.assertIsNotNone(re.match(r"[\%o8]" % i, chr(i)))
-                self.assertIsNotNone(re.match(r"[\%03o]" % i, chr(i)))
-                self.assertIsNotNone(re.match(r"[\%03o0]" % i, chr(i)))
-                self.assertIsNotNone(re.match(r"[\%03o8]" % i, chr(i)))
-                self.assertIsNotNone(re.match(r"[\x%02x]" % i, chr(i)))
-                self.assertIsNotNone(re.match(r"[\x%02x0]" % i, chr(i)))
-                self.assertIsNotNone(re.match(r"[\x%02xz]" % i, chr(i)))
+                self.assertTrue(re.match(r"[\%o]" % i, chr(i)))
+                self.assertTrue(re.match(r"[\%o8]" % i, chr(i)))
+                self.assertTrue(re.match(r"[\%03o]" % i, chr(i)))
+                self.assertTrue(re.match(r"[\%03o0]" % i, chr(i)))
+                self.assertTrue(re.match(r"[\%03o8]" % i, chr(i)))
+                self.assertTrue(re.match(r"[\x%02x]" % i, chr(i)))
+                self.assertTrue(re.match(r"[\x%02x0]" % i, chr(i)))
+                self.assertTrue(re.match(r"[\x%02xz]" % i, chr(i)))
             if i < 0x10000:
-                self.assertIsNotNone(re.match(r"[\u%04x]" % i, chr(i)))
-                self.assertIsNotNone(re.match(r"[\u%04x0]" % i, chr(i)))
-                self.assertIsNotNone(re.match(r"[\u%04xz]" % i, chr(i)))
-            self.assertIsNotNone(re.match(r"[\U%08x]" % i, chr(i)))
-            self.assertIsNotNone(re.match(r"[\U%08x0]" % i, chr(i)+"0"))
-            self.assertIsNotNone(re.match(r"[\U%08xz]" % i, chr(i)+"z"))
-        self.assertIsNotNone(re.match(r"[\U0001d49c-\U0001d4b5]", "\U0001d49e"))
+                self.assertTrue(re.match(r"[\u%04x]" % i, chr(i)))
+                self.assertTrue(re.match(r"[\u%04x0]" % i, chr(i)))
+                self.assertTrue(re.match(r"[\u%04xz]" % i, chr(i)))
+            self.assertTrue(re.match(r"[\U%08x]" % i, chr(i)))
+            self.assertTrue(re.match(r"[\U%08x0]" % i, chr(i)+"0"))
+            self.assertTrue(re.match(r"[\U%08xz]" % i, chr(i)+"z"))
+        self.assertTrue(re.match(r"[\U0001d49c-\U0001d4b5]", "\U0001d49e"))
         self.assertRaises(re.error, re.match, r"[\911]", "")
         self.assertRaises(re.error, re.match, r"[\x1z]", "")
         self.assertRaises(re.error, re.match, r"[\u123z]", "")
@@ -733,35 +733,35 @@ class ReTests(unittest.TestCase):
 
     def test_sre_byte_literals(self):
         for i in [0, 8, 16, 32, 64, 127, 128, 255]:
-            self.assertIsNotNone(re.match((r"\%03o" % i).encode(), bytes([i])))
-            self.assertIsNotNone(re.match((r"\%03o0" % i).encode(), bytes([i])+b"0"))
-            self.assertIsNotNone(re.match((r"\%03o8" % i).encode(), bytes([i])+b"8"))
-            self.assertIsNotNone(re.match((r"\x%02x" % i).encode(), bytes([i])))
-            self.assertIsNotNone(re.match((r"\x%02x0" % i).encode(), bytes([i])+b"0"))
-            self.assertIsNotNone(re.match((r"\x%02xz" % i).encode(), bytes([i])+b"z"))
-        self.assertIsNotNone(re.match(br"\u", b'u'))
-        self.assertIsNotNone(re.match(br"\U", b'U'))
-        self.assertIsNotNone(re.match(br"\0", b"\000"))
-        self.assertIsNotNone(re.match(br"\08", b"\0008"))
-        self.assertIsNotNone(re.match(br"\01", b"\001"))
-        self.assertIsNotNone(re.match(br"\018", b"\0018"))
-        self.assertIsNotNone(re.match(br"\567", bytes([0o167])))
+            self.assertTrue(re.match((r"\%03o" % i).encode(), bytes([i])))
+            self.assertTrue(re.match((r"\%03o0" % i).encode(), bytes([i])+b"0"))
+            self.assertTrue(re.match((r"\%03o8" % i).encode(), bytes([i])+b"8"))
+            self.assertTrue(re.match((r"\x%02x" % i).encode(), bytes([i])))
+            self.assertTrue(re.match((r"\x%02x0" % i).encode(), bytes([i])+b"0"))
+            self.assertTrue(re.match((r"\x%02xz" % i).encode(), bytes([i])+b"z"))
+        self.assertTrue(re.match(br"\u", b'u'))
+        self.assertTrue(re.match(br"\U", b'U'))
+        self.assertTrue(re.match(br"\0", b"\000"))
+        self.assertTrue(re.match(br"\08", b"\0008"))
+        self.assertTrue(re.match(br"\01", b"\001"))
+        self.assertTrue(re.match(br"\018", b"\0018"))
+        self.assertTrue(re.match(br"\567", bytes([0o167])))
         self.assertRaises(re.error, re.match, br"\911", b"")
         self.assertRaises(re.error, re.match, br"\x1", b"")
         self.assertRaises(re.error, re.match, br"\x1z", b"")
 
     def test_sre_byte_class_literals(self):
         for i in [0, 8, 16, 32, 64, 127, 128, 255]:
-            self.assertIsNotNone(re.match((r"[\%o]" % i).encode(), bytes([i])))
-            self.assertIsNotNone(re.match((r"[\%o8]" % i).encode(), bytes([i])))
-            self.assertIsNotNone(re.match((r"[\%03o]" % i).encode(), bytes([i])))
-            self.assertIsNotNone(re.match((r"[\%03o0]" % i).encode(), bytes([i])))
-            self.assertIsNotNone(re.match((r"[\%03o8]" % i).encode(), bytes([i])))
-            self.assertIsNotNone(re.match((r"[\x%02x]" % i).encode(), bytes([i])))
-            self.assertIsNotNone(re.match((r"[\x%02x0]" % i).encode(), bytes([i])))
-            self.assertIsNotNone(re.match((r"[\x%02xz]" % i).encode(), bytes([i])))
-        self.assertIsNotNone(re.match(br"[\u]", b'u'))
-        self.assertIsNotNone(re.match(br"[\U]", b'U'))
+            self.assertTrue(re.match((r"[\%o]" % i).encode(), bytes([i])))
+            self.assertTrue(re.match((r"[\%o8]" % i).encode(), bytes([i])))
+            self.assertTrue(re.match((r"[\%03o]" % i).encode(), bytes([i])))
+            self.assertTrue(re.match((r"[\%03o0]" % i).encode(), bytes([i])))
+            self.assertTrue(re.match((r"[\%03o8]" % i).encode(), bytes([i])))
+            self.assertTrue(re.match((r"[\x%02x]" % i).encode(), bytes([i])))
+            self.assertTrue(re.match((r"[\x%02x0]" % i).encode(), bytes([i])))
+            self.assertTrue(re.match((r"[\x%02xz]" % i).encode(), bytes([i])))
+        self.assertTrue(re.match(br"[\u]", b'u'))
+        self.assertTrue(re.match(br"[\U]", b'U'))
         self.assertRaises(re.error, re.match, br"[\911]", "")
         self.assertRaises(re.error, re.match, br"[\x1z]", "")
 
@@ -772,7 +772,7 @@ class ReTests(unittest.TestCase):
 
     def test_bug_527371(self):
         # bug described in patches 527371/672491
-        self.assertEqual(re.match(r'(a)?a','a').lastindex, None)
+        self.assertIsNone(re.match(r'(a)?a','a').lastindex)
         self.assertEqual(re.match(r'(a)(b)?b','ab').lastindex, 1)
         self.assertEqual(re.match(r'(?P<a>a)(?P<b>b)?b','ab').lastgroup, 'a')
         self.assertEqual(re.match("(?P<a>a(b))", "ab").lastgroup, 'a')
@@ -829,7 +829,7 @@ class ReTests(unittest.TestCase):
             (r"\s+", None),
             ])
 
-        self.assertNotEqual(scanner.scanner.scanner("").pattern, None)
+        self.assertTrue(scanner.scanner.scanner("").pattern)
 
         self.assertEqual(scanner.scan("sum = 3*foo + 312.50 + bar"),
                          (['sum', 'op=', 3, 'op*', 'foo', 'op+', 312.5,
@@ -874,7 +874,7 @@ class ReTests(unittest.TestCase):
         # bug 764548, re.compile() barfs on str/unicode subclasses
         class my_unicode(str): pass
         pat = re.compile(my_unicode("abc"))
-        self.assertEqual(pat.match("xyz"), None)
+        self.assertIsNone(pat.match("xyz"))
 
     def test_finditer(self):
         iter = re.finditer(r":+", "a:b::c:::d")
@@ -902,8 +902,8 @@ class ReTests(unittest.TestCase):
                          ["::", "::"])
 
     def test_bug_926075(self):
-        self.assertTrue(re.compile('bug_926075') is not
-                     re.compile(b'bug_926075'))
+        self.assertIsNot(re.compile('bug_926075'),
+                         re.compile(b'bug_926075'))
 
     def test_bug_931848(self):
         pattern = "[\u002E\u3002\uFF0E\uFF61]"
@@ -917,7 +917,7 @@ class ReTests(unittest.TestCase):
 
         scanner = re.compile(r"\s").scanner("a b")
         self.assertEqual(scanner.search().span(), (1, 2))
-        self.assertEqual(scanner.search(), None)
+        self.assertIsNone(scanner.search())
 
     def test_bug_817234(self):
         iter = re.finditer(r".*", "asdf")
@@ -951,7 +951,7 @@ class ReTests(unittest.TestCase):
         import array
         for typecode in 'bBuhHiIlLfd':
             a = array.array(typecode)
-            self.assertEqual(re.compile(b"bla").match(a), None)
+            self.assertIsNone(re.compile(b"bla").match(a))
             self.assertEqual(re.compile(b"").match(a).groups(), ())
 
     def test_inline_flags(self):
@@ -961,27 +961,27 @@ class ReTests(unittest.TestCase):
 
         p = re.compile(upper_char, re.I | re.U)
         q = p.match(lower_char)
-        self.assertNotEqual(q, None)
+        self.assertTrue(q)
 
         p = re.compile(lower_char, re.I | re.U)
         q = p.match(upper_char)
-        self.assertNotEqual(q, None)
+        self.assertTrue(q)
 
         p = re.compile('(?i)' + upper_char, re.U)
         q = p.match(lower_char)
-        self.assertNotEqual(q, None)
+        self.assertTrue(q)
 
         p = re.compile('(?i)' + lower_char, re.U)
         q = p.match(upper_char)
-        self.assertNotEqual(q, None)
+        self.assertTrue(q)
 
         p = re.compile('(?iu)' + upper_char)
         q = p.match(lower_char)
-        self.assertNotEqual(q, None)
+        self.assertTrue(q)
 
         p = re.compile('(?iu)' + lower_char)
         q = p.match(upper_char)
-        self.assertNotEqual(q, None)
+        self.assertTrue(q)
 
     def test_dollar_matches_twice(self):
         "$ matches the end of string, and just before the terminating \n"
@@ -1012,23 +1012,23 @@ class ReTests(unittest.TestCase):
         # String patterns
         for flags in (0, re.UNICODE):
             pat = re.compile('\xc0', flags | re.IGNORECASE)
-            self.assertNotEqual(pat.match('\xe0'), None)
+            self.assertTrue(pat.match('\xe0'))
             pat = re.compile('\w', flags)
-            self.assertNotEqual(pat.match('\xe0'), None)
+            self.assertTrue(pat.match('\xe0'))
         pat = re.compile('\xc0', re.ASCII | re.IGNORECASE)
-        self.assertEqual(pat.match('\xe0'), None)
+        self.assertIsNone(pat.match('\xe0'))
         pat = re.compile('(?a)\xc0', re.IGNORECASE)
-        self.assertEqual(pat.match('\xe0'), None)
+        self.assertIsNone(pat.match('\xe0'))
         pat = re.compile('\w', re.ASCII)
-        self.assertEqual(pat.match('\xe0'), None)
+        self.assertIsNone(pat.match('\xe0'))
         pat = re.compile('(?a)\w')
-        self.assertEqual(pat.match('\xe0'), None)
+        self.assertIsNone(pat.match('\xe0'))
         # Bytes patterns
         for flags in (0, re.ASCII):
             pat = re.compile(b'\xc0', flags | re.IGNORECASE)
-            self.assertEqual(pat.match(b'\xe0'), None)
+            self.assertIsNone(pat.match(b'\xe0'))
             pat = re.compile(b'\w', flags)
-            self.assertEqual(pat.match(b'\xe0'), None)
+            self.assertIsNone(pat.match(b'\xe0'))
         # Incompatibilities
         self.assertRaises(ValueError, re.compile, b'\w', re.UNICODE)
         self.assertRaises(ValueError, re.compile, b'(?u)\w')
@@ -1068,11 +1068,11 @@ class ReTests(unittest.TestCase):
         self.assertRaises(TypeError, _sre.compile, {}, 0, [])
 
     def test_search_dot_unicode(self):
-        self.assertIsNotNone(re.search("123.*-", '123abc-'))
-        self.assertIsNotNone(re.search("123.*-", '123\xe9-'))
-        self.assertIsNotNone(re.search("123.*-", '123\u20ac-'))
-        self.assertIsNotNone(re.search("123.*-", '123\U0010ffff-'))
-        self.assertIsNotNone(re.search("123.*-", '123\xe9\u20ac\U0010ffff-'))
+        self.assertTrue(re.search("123.*-", '123abc-'))
+        self.assertTrue(re.search("123.*-", '123\xe9-'))
+        self.assertTrue(re.search("123.*-", '123\u20ac-'))
+        self.assertTrue(re.search("123.*-", '123\U0010ffff-'))
+        self.assertTrue(re.search("123.*-", '123\xe9\u20ac\U0010ffff-'))
 
     def test_compile(self):
         # Test return value when given string and pattern as parameter