diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
index ca61bd6..44c5bd5 100644
--- a/Lib/test/support/__init__.py
+++ b/Lib/test/support/__init__.py
@@ -390,8 +390,8 @@ def dec(*args, **kwargs):
 # A constant likely larger than the underlying OS socket buffer size, to make
 # writes blocking.
 # The socket buffer sizes can usually be tuned system-wide (e.g. through sysctl
-# on Linux), or on a per-socket basis (SO_SNDBUF/SO_RCVBUF). See issue #18643
-# for a discussion of this number).
+# on Linux), or on a per-socket basis (SO_SNDBUF/SO_RCVBUF).  See issue #18643
+# for a discussion of this number.
 SOCK_MAX_SIZE = 16 * 1024 * 1024 + 1
 
 # decorator for skipping tests on non-IEEE 754 platforms
diff --git a/Lib/test/test_format.py b/Lib/test/test_format.py
index 6679bd3..ae0d4f7 100644
--- a/Lib/test/test_format.py
+++ b/Lib/test/test_format.py
@@ -249,7 +249,7 @@ def test_common_format(self):
         # base marker shouldn't change the size
         testcommon("%0#35.33o", big, "0o012345670123456701234567012345670")
 
-        # Some small ints, in both Python int and flavors).
+        # Some small ints, in both Python int and flavors.
         testcommon("%d", 42, "42")
         testcommon("%d", -42, "-42")
         testcommon("%d", 42.0, "42")
diff --git a/Lib/test/test_importlib/source/test_source_encoding.py b/Lib/test/test_importlib/source/test_source_encoding.py
index 980855f..c0b9b03 100644
--- a/Lib/test/test_importlib/source/test_source_encoding.py
+++ b/Lib/test/test_importlib/source/test_source_encoding.py
@@ -23,7 +23,7 @@ class EncodingTest:
 
     PEP 263 specifies how that can change on a per-file basis. Either the first
     or second line can contain the encoding line [encoding first line]
-    encoding second line]. If the file has the BOM marker it is considered UTF-8
+    [encoding second line]. If the file has the BOM marker it is considered UTF-8
     implicitly [BOM]. If any encoding is specified it must be UTF-8, else it is
     an error [BOM and utf-8][BOM conflict].
 
diff --git a/Lib/test/test_winreg.py b/Lib/test/test_winreg.py
index fedfbe9..8157c2d 100644
--- a/Lib/test/test_winreg.py
+++ b/Lib/test/test_winreg.py
@@ -45,7 +45,7 @@
     ("Raw Data",      b"binary\x00data",                       REG_BINARY),
     ("Big String",    "x"*(2**14-1),                           REG_SZ),
     ("Big Binary",    b"x"*(2**14),                            REG_BINARY),
-    # Two and three kanjis, meaning: "Japan" and "Japanese")
+    # Two and three kanjis, meaning: "Japan" and "Japanese".
     ("Japanese 日本", "日本語", REG_SZ),
 ]