Feb 22, 2023 · Feb 21, 2023
diff --git a/Lib/test/test_urllib2.py b/Lib/test/test_urllib2.py
    def test_gh_98778(self):
        x = urllib.error.HTTPError("url", 405, "METHOD NOT ALLOWED", None, None)
        self.assertEqual(getattr(x, "__notes__", ()), ())
        self.assertIsInstance(x.fp.read(), bytes)

    def test_parse_proxy(self):
        parse_proxy_test_cases = [
diff --git a/Lib/urllib/error.py b/Lib/urllib/error.py
        self.fp = fp
        self.filename = url
        if fp is None:
            fp = io.StringIO()
            fp = io.BytesIO()
        self.__super_init(fp, hdrs, url, code)

    def __str__(self):
diff --git a/Misc/ACKS b/Misc/ACKS
 Norman Vine
 Pauli Virtanen
 Frank Visser
 Long Vo
 Johannes Vogel
 Michael Vogt
 Radu Voicilas
diff --git a/Misc/NEWS.d/next/Library/2023-02-21-07-15-41.gh-issue-101936.QVOxHH.rst b/Misc/NEWS.d/next/Library/2023-02-21-07-15-41.gh-issue-101936.QVOxHH.rst
 The default value of ``fp`` becomes :class:`io.BytesIO` if :exc:`~urllib.error.HTTPError`
 is initialized without a designated ``fp`` parameter. Patch by Long Vo.
Original file line number	Diff line number	Diff line change
Expand Up		@@ -1826,6 +1826,7 @@ def test_HTTPError_interface(self):
		def test_gh_98778(self):
		x = urllib.error.HTTPError("url", 405, "METHOD NOT ALLOWED", None, None)
		self.assertEqual(getattr(x, "__notes__", ()), ())
		self.assertIsInstance(x.fp.read(), bytes)

		def test_parse_proxy(self):
		parse_proxy_test_cases = [
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -43,7 +43,7 @@ def __init__(self, url, code, msg, hdrs, fp):
		self.fp = fp
		self.filename = url
		if fp is None:
		fp = io.StringIO()
		fp = io.BytesIO()
		self.__super_init(fp, hdrs, url, code)

		def __str__(self):
Expand Down
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		The default value of ``fp`` becomes :class:`io.BytesIO` if :exc:`~urllib.error.HTTPError`
		is initialized without a designated ``fp`` parameter. Patch by Long Vo.