diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py
index 16407db..cfd801e 100644
--- a/Lib/test/_test_multiprocessing.py
+++ b/Lib/test/_test_multiprocessing.py
@@ -26,7 +26,7 @@
 _multiprocessing = test.support.import_module('_multiprocessing')
 # Skip tests if sem_open implementation is broken.
 test.support.import_module('multiprocessing.synchronize')
-# import threading after _multiprocessing to raise a more revelant error
+# import threading after _multiprocessing to raise a more relevant error
 # message: "No module named _multiprocessing". _multiprocessing is not compiled
 # without thread support.
 import threading
diff --git a/Lib/test/datetimetester.py b/Lib/test/datetimetester.py
index e21d487..86c9373 100644
--- a/Lib/test/datetimetester.py
+++ b/Lib/test/datetimetester.py
@@ -3958,7 +3958,7 @@
         self.assertRaises(TypeError, lambda: as_date >= as_datetime)
         self.assertRaises(TypeError, lambda: as_datetime >= as_date)
 
-        # Neverthelss, comparison should work with the base-class (date)
+        # Nevertheless, comparison should work with the base-class (date)
         # projection if use of a date method is forced.
         self.assertEqual(as_date.__eq__(as_datetime), True)
         different_day = (as_date.day + 1) % 20 + 1
diff --git a/Lib/test/test_asyncio/test_locks.py b/Lib/test/test_asyncio/test_locks.py
index d3bdc51..e557212 100644
--- a/Lib/test/test_asyncio/test_locks.py
+++ b/Lib/test/test_asyncio/test_locks.py
@@ -130,8 +130,8 @@
     def test_cancel_race(self):
         # Several tasks:
         # - A acquires the lock
-        # - B is blocked in aqcuire()
-        # - C is blocked in aqcuire()
+        # - B is blocked in acquire()
+        # - C is blocked in acquire()
         #
         # Now, concurrently:
         # - B is cancelled
diff --git a/Lib/test/test_concurrent_futures.py b/Lib/test/test_concurrent_futures.py
index 46b069c..23e95b2 100644
--- a/Lib/test/test_concurrent_futures.py
+++ b/Lib/test/test_concurrent_futures.py
@@ -4,7 +4,7 @@
 test.support.import_module('_multiprocessing')
 # Skip tests if sem_open implementation is broken.
 test.support.import_module('multiprocessing.synchronize')
-# import threading after _multiprocessing to raise a more revelant error
+# import threading after _multiprocessing to raise a more relevant error
 # message: "No module named _multiprocessing". _multiprocessing is not compiled
 # without thread support.
 test.support.import_module('threading')
diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index 0a5ecd5..0950b8e 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -876,7 +876,7 @@
         self.assertEqual(Frag().__int__(), 42)
         self.assertEqual(int(Frag()), 42)
 
-    def test_diamond_inheritence(self):
+    def test_diamond_inheritance(self):
         # Testing multiple inheritance special cases...
         class A(object):
             def spam(self): return "A"
diff --git a/Lib/test/test_difflib.py b/Lib/test/test_difflib.py
index ab9debf..156b523 100644
--- a/Lib/test/test_difflib.py
+++ b/Lib/test/test_difflib.py
@@ -122,17 +122,17 @@
 """
 
 patch914575_from2 = """
-\t\tLine 1: preceeded by from:[tt] to:[ssss]
-  \t\tLine 2: preceeded by from:[sstt] to:[sssst]
-  \t \tLine 3: preceeded by from:[sstst] to:[ssssss]
+\t\tLine 1: preceded by from:[tt] to:[ssss]
+  \t\tLine 2: preceded by from:[sstt] to:[sssst]
+  \t \tLine 3: preceded by from:[sstst] to:[ssssss]
 Line 4:  \thas from:[sst] to:[sss] after :
 Line 5: has from:[t] to:[ss] at end\t
 """
 
 patch914575_to2 = """
-    Line 1: preceeded by from:[tt] to:[ssss]
-    \tLine 2: preceeded by from:[sstt] to:[sssst]
-      Line 3: preceeded by from:[sstst] to:[ssssss]
+    Line 1: preceded by from:[tt] to:[ssss]
+    \tLine 2: preceded by from:[sstt] to:[sssst]
+      Line 3: preceded by from:[sstst] to:[ssssss]
 Line 4:   has from:[sst] to:[sss] after :
 Line 5: has from:[t] to:[ss] at end
 """
diff --git a/Lib/test/test_difflib_expect.html b/Lib/test/test_difflib_expect.html
index ea7a24e..3e6a7b7 100644
--- a/Lib/test/test_difflib_expect.html
+++ b/Lib/test/test_difflib_expect.html
@@ -387,9 +387,9 @@
         
         <tbody>
             <tr><td class="diff_next" id="difflib_chg_to9__0"><a href="#difflib_chg_to9__0">f</a></td><td class="diff_header" id="from9_1">1</td><td nowrap="nowrap"></td><td class="diff_next"><a href="#difflib_chg_to9__0">f</a></td><td class="diff_header" id="to9_1">1</td><td nowrap="nowrap"></td></tr>
-            <tr><td class="diff_next"><a href="#difflib_chg_to9__top">t</a></td><td class="diff_header" id="from9_2">2</td><td nowrap="nowrap"><span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;1:&nbsp;preceeded&nbsp;by&nbsp;from:[tt]&nbsp;to:[ssss]</td><td class="diff_next"><a href="#difflib_chg_to9__top">t</a></td><td class="diff_header" id="to9_2">2</td><td nowrap="nowrap"><span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;1:&nbsp;preceeded&nbsp;by&nbsp;from:[tt]&nbsp;to:[ssss]</td></tr>
-            <tr><td class="diff_next"></td><td class="diff_header" id="from9_3">3</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;</span>&nbsp;&nbsp;Line&nbsp;2:&nbsp;preceeded&nbsp;by&nbsp;from:[sstt]&nbsp;to:[sssst]</td><td class="diff_next"></td><td class="diff_header" id="to9_3">3</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;</span>&nbsp;&nbsp;Line&nbsp;2:&nbsp;preceeded&nbsp;by&nbsp;from:[sstt]&nbsp;to:[sssst]</td></tr>
-            <tr><td class="diff_next"></td><td class="diff_header" id="from9_4">4</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;3:&nbsp;preceeded&nbsp;by&nbsp;from:[sstst]&nbsp;to:[ssssss]</td><td class="diff_next"></td><td class="diff_header" id="to9_4">4</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;3:&nbsp;preceeded&nbsp;by&nbsp;from:[sstst]&nbsp;to:[ssssss]</td></tr>
+            <tr><td class="diff_next"><a href="#difflib_chg_to9__top">t</a></td><td class="diff_header" id="from9_2">2</td><td nowrap="nowrap"><span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;1:&nbsp;preceded&nbsp;by&nbsp;from:[tt]&nbsp;to:[ssss]</td><td class="diff_next"><a href="#difflib_chg_to9__top">t</a></td><td class="diff_header" id="to9_2">2</td><td nowrap="nowrap"><span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;1:&nbsp;preceded&nbsp;by&nbsp;from:[tt]&nbsp;to:[ssss]</td></tr>
+            <tr><td class="diff_next"></td><td class="diff_header" id="from9_3">3</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;</span>&nbsp;&nbsp;Line&nbsp;2:&nbsp;preceded&nbsp;by&nbsp;from:[sstt]&nbsp;to:[sssst]</td><td class="diff_next"></td><td class="diff_header" id="to9_3">3</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;</span>&nbsp;&nbsp;Line&nbsp;2:&nbsp;preceded&nbsp;by&nbsp;from:[sstt]&nbsp;to:[sssst]</td></tr>
+            <tr><td class="diff_next"></td><td class="diff_header" id="from9_4">4</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;3:&nbsp;preceded&nbsp;by&nbsp;from:[sstst]&nbsp;to:[ssssss]</td><td class="diff_next"></td><td class="diff_header" id="to9_4">4</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;3:&nbsp;preceded&nbsp;by&nbsp;from:[sstst]&nbsp;to:[ssssss]</td></tr>
             <tr><td class="diff_next"></td><td class="diff_header" id="from9_5">5</td><td nowrap="nowrap">Line&nbsp;4:&nbsp;&nbsp;<span class="diff_chg">&nbsp;</span>has&nbsp;from:[sst]&nbsp;to:[sss]&nbsp;after&nbsp;:</td><td class="diff_next"></td><td class="diff_header" id="to9_5">5</td><td nowrap="nowrap">Line&nbsp;4:&nbsp;&nbsp;<span class="diff_chg">&nbsp;</span>has&nbsp;from:[sst]&nbsp;to:[sss]&nbsp;after&nbsp;:</td></tr>
             <tr><td class="diff_next"></td><td class="diff_header" id="from9_6">6</td><td nowrap="nowrap">Line&nbsp;5:&nbsp;has&nbsp;from:[t]&nbsp;to:[ss]&nbsp;at&nbsp;end<span class="diff_sub">&nbsp;</span></td><td class="diff_next"></td><td class="diff_header" id="to9_6">6</td><td nowrap="nowrap">Line&nbsp;5:&nbsp;has&nbsp;from:[t]&nbsp;to:[ss]&nbsp;at&nbsp;end</td></tr>
         </tbody>
@@ -403,9 +403,9 @@
         
         <tbody>
             <tr><td class="diff_next" id="difflib_chg_to10__0"><a href="#difflib_chg_to10__0">f</a></td><td class="diff_header" id="from10_1">1</td><td nowrap="nowrap"></td><td class="diff_next"><a href="#difflib_chg_to10__0">f</a></td><td class="diff_header" id="to10_1">1</td><td nowrap="nowrap"></td></tr>
-            <tr><td class="diff_next"><a href="#difflib_chg_to10__top">t</a></td><td class="diff_header" id="from10_2">2</td><td nowrap="nowrap"><span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;1:&nbsp;preceeded&nbsp;by&nbsp;from:[tt]&nbsp;to:[ssss]</td><td class="diff_next"><a href="#difflib_chg_to10__top">t</a></td><td class="diff_header" id="to10_2">2</td><td nowrap="nowrap"><span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;1:&nbsp;preceeded&nbsp;by&nbsp;from:[tt]&nbsp;to:[ssss]</td></tr>
-            <tr><td class="diff_next"></td><td class="diff_header" id="from10_3">3</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>&nbsp;&nbsp;&nbsp;&nbsp;Line&nbsp;2:&nbsp;preceeded&nbsp;by&nbsp;from:[sstt]&nbsp;to:[sssst]</td><td class="diff_next"></td><td class="diff_header" id="to10_3">3</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;</span>&nbsp;&nbsp;&nbsp;&nbsp;Line&nbsp;2:&nbsp;preceeded&nbsp;by&nbsp;from:[sstt]&nbsp;to:[sssst]</td></tr>
-            <tr><td class="diff_next"></td><td class="diff_header" id="from10_4">4</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;3:&nbsp;preceeded&nbsp;by&nbsp;from:[sstst]&nbsp;to:[ssssss]</td><td class="diff_next"></td><td class="diff_header" id="to10_4">4</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;3:&nbsp;preceeded&nbsp;by&nbsp;from:[sstst]&nbsp;to:[ssssss]</td></tr>
+            <tr><td class="diff_next"><a href="#difflib_chg_to10__top">t</a></td><td class="diff_header" id="from10_2">2</td><td nowrap="nowrap"><span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;1:&nbsp;preceded&nbsp;by&nbsp;from:[tt]&nbsp;to:[ssss]</td><td class="diff_next"><a href="#difflib_chg_to10__top">t</a></td><td class="diff_header" id="to10_2">2</td><td nowrap="nowrap"><span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;1:&nbsp;preceded&nbsp;by&nbsp;from:[tt]&nbsp;to:[ssss]</td></tr>
+            <tr><td class="diff_next"></td><td class="diff_header" id="from10_3">3</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>&nbsp;&nbsp;&nbsp;&nbsp;Line&nbsp;2:&nbsp;preceded&nbsp;by&nbsp;from:[sstt]&nbsp;to:[sssst]</td><td class="diff_next"></td><td class="diff_header" id="to10_3">3</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;</span>&nbsp;&nbsp;&nbsp;&nbsp;Line&nbsp;2:&nbsp;preceded&nbsp;by&nbsp;from:[sstt]&nbsp;to:[sssst]</td></tr>
+            <tr><td class="diff_next"></td><td class="diff_header" id="from10_4">4</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;3:&nbsp;preceded&nbsp;by&nbsp;from:[sstst]&nbsp;to:[ssssss]</td><td class="diff_next"></td><td class="diff_header" id="to10_4">4</td><td nowrap="nowrap">&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;</span>Line&nbsp;3:&nbsp;preceded&nbsp;by&nbsp;from:[sstst]&nbsp;to:[ssssss]</td></tr>
             <tr><td class="diff_next"></td><td class="diff_header" id="from10_5">5</td><td nowrap="nowrap">Line&nbsp;4:&nbsp;&nbsp;<span class="diff_chg">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span>has&nbsp;from:[sst]&nbsp;to:[sss]&nbsp;after&nbsp;:</td><td class="diff_next"></td><td class="diff_header" id="to10_5">5</td><td nowrap="nowrap">Line&nbsp;4:&nbsp;&nbsp;<span class="diff_chg">&nbsp;</span>has&nbsp;from:[sst]&nbsp;to:[sss]&nbsp;after&nbsp;:</td></tr>
             <tr><td class="diff_next"></td><td class="diff_header" id="from10_6">6</td><td nowrap="nowrap">Line&nbsp;5:&nbsp;has&nbsp;from:[t]&nbsp;to:[ss]&nbsp;at&nbsp;end<span class="diff_sub">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span></td><td class="diff_next"></td><td class="diff_header" id="to10_6">6</td><td nowrap="nowrap">Line&nbsp;5:&nbsp;has&nbsp;from:[t]&nbsp;to:[ss]&nbsp;at&nbsp;end</td></tr>
         </tbody>
diff --git a/Lib/test/test_email/test_email.py b/Lib/test/test_email/test_email.py
index 8a7e06e..8aaca01 100644
--- a/Lib/test/test_email/test_email.py
+++ b/Lib/test/test_email/test_email.py
@@ -723,12 +723,12 @@
 
     # Issue 5871: reject an attempt to embed a header inside a header value
     # (header injection attack).
-    def test_embeded_header_via_Header_rejected(self):
+    def test_embedded_header_via_Header_rejected(self):
         msg = Message()
         msg['Dummy'] = Header('dummy\nX-Injected-Header: test')
         self.assertRaises(errors.HeaderParseError, msg.as_string)
 
-    def test_embeded_header_via_string_rejected(self):
+    def test_embedded_header_via_string_rejected(self):
         msg = Message()
         msg['Dummy'] = 'dummy\nX-Injected-Header: test'
         self.assertRaises(errors.HeaderParseError, msg.as_string)
diff --git a/Lib/test/test_email/test_generator.py b/Lib/test/test_email/test_generator.py
index b1cbce2..7c8877f 100644
--- a/Lib/test/test_email/test_generator.py
+++ b/Lib/test/test_email/test_generator.py
@@ -143,7 +143,7 @@
     def test_set_mangle_from_via_policy(self):
         source = textwrap.dedent("""\
             Subject: test that
-             from is mangeld in the body!
+             from is mangled in the body!
 
             From time to time I write a rhyme.
             """)
diff --git a/Lib/test/test_importlib/test_util.py b/Lib/test/test_importlib/test_util.py
index 69466b2..41ca333 100644
--- a/Lib/test/test_importlib/test_util.py
+++ b/Lib/test/test_importlib/test_util.py
@@ -372,7 +372,7 @@
         # bacon
         self.assertEqual('bacon', self.util.resolve_name('bacon', None))
 
-    def test_aboslute_within_package(self):
+    def test_absolute_within_package(self):
         # bacon in spam
         self.assertEqual('bacon', self.util.resolve_name('bacon', 'spam'))
 
diff --git a/Lib/test/test_ipaddress.py b/Lib/test/test_ipaddress.py
index 2e31f42..5f08f0c 100644
--- a/Lib/test/test_ipaddress.py
+++ b/Lib/test/test_ipaddress.py
@@ -1263,7 +1263,7 @@
         ip4 = ipaddress.IPv4Address('1.1.1.3')
         ip5 = ipaddress.IPv4Address('1.1.1.4')
         ip6 = ipaddress.IPv4Address('1.1.1.0')
-        # check that addreses are subsumed properly.
+        # check that addresses are subsumed properly.
         collapsed = ipaddress.collapse_addresses(
             [ip1, ip2, ip3, ip4, ip5, ip6])
         self.assertEqual(list(collapsed),
@@ -1277,7 +1277,7 @@
         ip4 = ipaddress.IPv4Address('1.1.1.3')
         #ip5 = ipaddress.IPv4Interface('1.1.1.4/30')
         #ip6 = ipaddress.IPv4Interface('1.1.1.4/30')
-        # check that addreses are subsumed properly.
+        # check that addresses are subsumed properly.
         collapsed = ipaddress.collapse_addresses([ip1, ip2, ip3, ip4])
         self.assertEqual(list(collapsed),
                          [ipaddress.IPv4Network('1.1.1.0/30')])
@@ -1291,7 +1291,7 @@
         # stored in no particular order b/c we want CollapseAddr to call
         # [].sort
         ip6 = ipaddress.IPv4Network('1.1.0.0/22')
-        # check that addreses are subsumed properly.
+        # check that addresses are subsumed properly.
         collapsed = ipaddress.collapse_addresses([ip1, ip2, ip3, ip4, ip5,
                                                      ip6])
         self.assertEqual(list(collapsed),
diff --git a/Lib/test/test_pep247.py b/Lib/test/test_pep247.py
index ab5f4189..c17ceed 100644
--- a/Lib/test/test_pep247.py
+++ b/Lib/test/test_pep247.py
@@ -1,5 +1,5 @@
 """
-Test suite to check compilance with PEP 247, the standard API
+Test suite to check compliance with PEP 247, the standard API
 for hashing algorithms
 """
 
diff --git a/Lib/test/test_shutil.py b/Lib/test/test_shutil.py
index 1d5e01a..90a31d7 100644
--- a/Lib/test/test_shutil.py
+++ b/Lib/test/test_shutil.py
@@ -1306,10 +1306,10 @@
             shutil.chown(filename)
 
         with self.assertRaises(LookupError):
-            shutil.chown(filename, user='non-exising username')
+            shutil.chown(filename, user='non-existing username')
 
         with self.assertRaises(LookupError):
-            shutil.chown(filename, group='non-exising groupname')
+            shutil.chown(filename, group='non-existing groupname')
 
         with self.assertRaises(TypeError):
             shutil.chown(filename, b'spam')
diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py
index 154e330..2bfb69c 100644
--- a/Lib/test/test_subprocess.py
+++ b/Lib/test/test_subprocess.py
@@ -682,7 +682,7 @@
         self.assertEqual(stdout, "banana")
         self.assertStderrEqual(stderr.encode(), b"pineapple\npear\n")
 
-    def test_communicate_timeout_large_ouput(self):
+    def test_communicate_timeout_large_output(self):
         # Test an expiring timeout while the child is outputting lots of data.
         p = subprocess.Popen([sys.executable, "-c",
                               'import sys,os,time;'
diff --git a/Lib/test/test_urllib.py b/Lib/test/test_urllib.py
index c26c52a..247598a 100644
--- a/Lib/test/test_urllib.py
+++ b/Lib/test/test_urllib.py
@@ -1,4 +1,4 @@
-"""Regresssion tests for what was in Python 2's "urllib" module"""
+"""Regression tests for what was in Python 2's "urllib" module"""
 
 import urllib.parse
 import urllib.request
diff --git a/Lib/test/test_winreg.py b/Lib/test/test_winreg.py
index ef40e8b..d642b13 100644
--- a/Lib/test/test_winreg.py
+++ b/Lib/test/test_winreg.py
@@ -169,7 +169,7 @@
         DeleteKey(key, subkeystr)
 
         try:
-            # Shouldnt be able to delete it twice!
+            # Shouldn't be able to delete it twice!
             DeleteKey(key, subkeystr)
             self.fail("Deleting the key twice succeeded")
         except OSError: