Issue #18743: Fix references to non-existant "StringIO" module

in docstrings and comments.

3 files changed, 7 insertions, 12 deletions

diff --git a/Lib/test/pickletester.py b/Lib/test/pickletester.py
index 3423462..052290d 100644
--- a/Lib/test/pickletester.py
+++ b/Lib/test/pickletester.py
@@ -1547,14 +1547,14 @@ class AbstractPicklerUnpicklerObjectTests(unittest.TestCase):
         pickler.dump(data)
         first_pickled = f.getvalue()
 
-        # Reset StringIO object.
+        # Reset BytesIO object.
         f.seek(0)
         f.truncate()
 
         pickler.dump(data)
         second_pickled = f.getvalue()
 
-        # Reset the Pickler and StringIO objects.
+        # Reset the Pickler and BytesIO objects.
         pickler.clear_memo()
         f.seek(0)
         f.truncate()
diff --git a/Lib/test/test_httplib.py b/Lib/test/test_httplib.py
index 863e4bc..769ab13 100644
--- a/Lib/test/test_httplib.py
+++ b/Lib/test/test_httplib.py
@@ -51,8 +51,8 @@ class EPipeSocket(FakeSocket):
     def close(self):
         pass
 
-class NoEOFStringIO(io.BytesIO):
-    """Like StringIO, but raises AssertionError on EOF.
+class NoEOFBytesIO(io.BytesIO):
+    """Like BytesIO, but raises AssertionError on EOF.
 
     This is used below to test that http.client doesn't try to read
     more from the underlying file than it should.
@@ -324,7 +324,7 @@ class BasicTest(TestCase):
             'HTTP/1.1 200 OK\r\n'
             'Content-Length: 14432\r\n'
             '\r\n',
-            NoEOFStringIO)
+            NoEOFBytesIO)
         resp = client.HTTPResponse(sock, method="HEAD")
         resp.begin()
         if resp.read():
@@ -337,7 +337,7 @@ class BasicTest(TestCase):
             'HTTP/1.1 200 OK\r\n'
             'Content-Length: 14432\r\n'
             '\r\n',
-            NoEOFStringIO)
+            NoEOFBytesIO)
         resp = client.HTTPResponse(sock, method="HEAD")
         resp.begin()
         b = bytearray(5)
diff --git a/Lib/test/test_logging.py b/Lib/test/test_logging.py
index c9a051a..ae4ca18 100644
--- a/Lib/test/test_logging.py
+++ b/Lib/test/test_logging.py
@@ -156,12 +156,7 @@ class BaseTest(unittest.TestCase):
         the expected_values list of tuples."""
         stream = stream or self.stream
         pat = re.compile(self.expected_log_pat)
-        try:
-            stream.reset()
-            actual_lines = stream.readlines()
-        except AttributeError:
-            # StringIO.StringIO lacks a reset() method.
-            actual_lines = stream.getvalue().splitlines()
+        actual_lines = stream.getvalue().splitlines()
         self.assertEqual(len(actual_lines), len(expected_values))
         for actual, expected in zip(actual_lines, expected_values):
             match = pat.search(actual)