https://github.com/python/cpython/commit/e9339876883f96af2e406a92a05be647b7fbe5d5
commit: e9339876883f96af2e406a92a05be647b7fbe5d5
branch: main
author: Stan Ulbrych <[email protected]>
committer: StanFromIreland <[email protected]>
date: 2026-06-13T12:21:54Z
summary:
gh-77328: Update `base64` module RFC references to RFC 4648 (#151275)
files:
M Lib/base64.py
diff --git a/Lib/base64.py b/Lib/base64.py
index 4a0e9d446edb0b..fa562f74a81034 100644
--- a/Lib/base64.py
+++ b/Lib/base64.py
@@ -1,4 +1,4 @@
-"""Base16, Base32, Base64 (RFC 3548), Base85 and Ascii85 data encodings"""
+"""Base16, Base32, Base64 (RFC 4648), Base85 and Ascii85 data encodings"""
# Modified 04-Oct-1995 by Jack Jansen to use binascii module
# Modified 30-Dec-2003 by Barry Warsaw to add full RFC 3548 support
@@ -219,7 +219,7 @@ def urlsafe_b64decode(s, *, padded=False):
characters present in the input.
'''
_B32_DECODE_MAP01_DOCSTRING = '''
-RFC 3548 allows for optional mapping of the digit 0 (zero) to the
+RFC 4648 allows for optional mapping of the digit 0 (zero) to the
letter O (oh), and for optional mapping of the digit 1 (one) to
either the letter I (eye) or letter L (el). The optional argument
map01 when not None, specifies which letter the digit 1 should be
@@ -266,7 +266,7 @@ def b32hexdecode(s, casefold=False, *, padded=True,
ignorechars=b'',
extra_args='')
-# RFC 3548, Base 16 Alphabet specifies uppercase, but hexlify() returns
+# RFC 4648, Base 16 Alphabet specifies uppercase, but hexlify() returns
# lowercase. The RFC also recommends against accepting input case
# insensitively.
def b16encode(s, *, wrapcol=0):
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