Update comments

Author: donbarbos

stdlib/@tests/test_cases/check_compression.py

@@ -40,7 +40,7 @@ def accept_decompressor(d: _Decompressor) -> None:
 
 
 # Test objects from compression._common._streams
-fp = cast(_Reader, io.BytesIO(b"hello world"))  # type: ignore
+fp = cast(_Reader, io.BytesIO(b"hello world"))
 DecompressReader(fp, decompressobj)
 DecompressReader(fp, BZ2Decompressor)
 DecompressReader(fp, LZMADecompressor)
@@ -53,7 +53,7 @@ def accept_decompressor(d: _Decompressor) -> None:
 accept_decompressor(CustomDecompressor())
 
 # Test objects from _compression
-fp = cast(_Reader_other, io.BytesIO(b"hello world"))  # type: ignore
+fp = cast(_Reader_other, io.BytesIO(b"hello world"))
 DecompressReader_other(fp, decompressobj)
 DecompressReader_other(fp, BZ2Decompressor)
 DecompressReader_other(fp, LZMADecompressor)

stdlib/_compression.pyi

@@ -20,7 +20,7 @@ class _Decompressor(Protocol):
     def unused_data(self) -> bytes: ...
     @property
     def eof(self) -> bool: ...
-    # `zlib._Decompress` does not have next property, unlike other Decompressors:
+    # `zlib._Decompress` does not have next property, but `DecompressReader` calls it:
     # @property
     # def needs_input(self) -> bool: ...
 

stdlib/compression/_common/_streams.pyi

@@ -18,7 +18,7 @@ class _Decompressor(Protocol):
     def unused_data(self) -> bytes: ...
     @property
     def eof(self) -> bool: ...
-    # `zlib._Decompress` does not have next property, unlike other Decompressors:
+    # `zlib._Decompress` does not have next property, but `DecompressReader` calls it:
     # @property
     # def needs_input(self) -> bool: ...