Add missing mode property to BufferedWriterWithProgress (#251)

Author: epwalsh

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Fixed
+
+- Fixed incompatibility issue with latest boto3/botocore release (>=1.37.34) .
+
 ## [v1.7.1](https://github.com/allenai/cached_path/releases/tag/v1.7.1) - 2025-03-11
 
 ### Fixed

cached_path/progress.py

@@ -42,18 +42,24 @@ def __init__(self, handle: io.BufferedWriter, progress: Progress, task_id: TaskI
         self.progress = progress
         self.task_id = task_id
         self.total_written = 0
+        self.handle.mode
+
+    @property
+    def mode(self):
+        return self.handle.mode
+
+    @property
+    def closed(self) -> bool:
+        return self.handle.closed
 
     def __enter__(self) -> "BufferedWriterWithProgress":
         self.handle.__enter__()
         return self
 
     def __exit__(self, exc_type, exc_val, exc_tb):
+        del exc_type, exc_val, exc_tb
         self.close()
 
-    @property
-    def closed(self) -> bool:
-        return self.handle.closed
-
     def close(self):
         self.handle.close()
 
@@ -78,8 +84,8 @@ def writable(self) -> bool:
     def read(self, size: Optional[int] = -1) -> bytes:
         return self.handle.read(size)
 
-    def read1(self, size: Optional[int] = -1) -> bytes:
-        return self.handle.read1()
+    def read1(self, size: int = -1, /) -> bytes:
+        return self.handle.read1(size)
 
     def readinto(self, b):
         return self.handle.readinto(b)