From 16b76b6937033454b834f48904db444be9c865cd Mon Sep 17 00:00:00 2001
From: "Christopher J. Markiewicz" <markiewicz@stanford.edu>
Date: Wed, 8 Jan 2025 15:03:39 -0500
Subject: [PATCH] gh-128646: Implement GzipFile.readinto() functions

---
 Lib/gzip.py | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Lib/gzip.py b/Lib/gzip.py
index 1a3c82ce7e0711a..21bb4b085fd4d62 100644
--- a/Lib/gzip.py
+++ b/Lib/gzip.py
@@ -338,6 +338,20 @@ def read1(self, size=-1):
             size = io.DEFAULT_BUFFER_SIZE
         return self._buffer.read1(size)
 
+    def readinto(self, b):
+        self._check_not_closed()
+        if self.mode != READ:
+            import errno
+            raise OSError(errno.EBADF, "readinto() on write-only GzipFile object")
+        return self._buffer.readinto(b)
+
+    def readinto1(self, b):
+        self._check_not_closed()
+        if self.mode != READ:
+            import errno
+            raise OSError(errno.EBADF, "readinto1() on write-only GzipFile object")
+        return self._buffer.readinto1(b)
+
     def peek(self, n):
         self._check_not_closed()
         if self.mode != READ: