From 30aeeb375b8f6c1f0eec95f7af60d3d4afa37f33 Mon Sep 17 00:00:00 2001 From: saber-bit Date: Sun, 21 Jun 2026 14:51:04 -0400 Subject: [PATCH] gh-151596: Add missing argument 'size' to pure-Python implementation of `TextIOBase.readline` (GH-151679) --- Lib/_pyio.py | 2 +- .../next/Library/2026-06-18-23-59-46.gh-issue-151596.5ma144.rst | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) create mode 100644 Misc/NEWS.d/next/Library/2026-06-18-23-59-46.gh-issue-151596.5ma144.rst diff --git a/Lib/_pyio.py b/Lib/_pyio.py index 993f94bc055b2e..4ba9b4070dff93 100644 --- a/Lib/_pyio.py +++ b/Lib/_pyio.py @@ -1928,7 +1928,7 @@ def truncate(self, pos=None): """Truncate size to pos, where pos is an int.""" self._unsupported("truncate") - def readline(self): + def readline(self, size=-1, /): """Read until newline or EOF. Returns an empty string if EOF is hit immediately. diff --git a/Misc/NEWS.d/next/Library/2026-06-18-23-59-46.gh-issue-151596.5ma144.rst b/Misc/NEWS.d/next/Library/2026-06-18-23-59-46.gh-issue-151596.5ma144.rst new file mode 100644 index 00000000000000..17ec1341142e93 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2026-06-18-23-59-46.gh-issue-151596.5ma144.rst @@ -0,0 +1 @@ +Add missing ``size`` positional argument to the pure-Python implementation of :meth:`io.TextIOBase.readline`.