bpo-37134: Add PEP570 notation to the documentation (GH-13743)
diff --git a/Doc/library/zlib.rst b/Doc/library/zlib.rst
index aa61278..339acfd 100644
--- a/Doc/library/zlib.rst
+++ b/Doc/library/zlib.rst
@@ -47,7 +47,7 @@
platforms, use ``adler32(data) & 0xffffffff``.
-.. function:: compress(data, level=-1)
+.. function:: compress(data, /, level=-1)
Compresses the bytes in *data*, returning a bytes object containing compressed data.
*level* is an integer from ``0`` to ``9`` or ``-1`` controlling the level of compression;
@@ -132,7 +132,7 @@
platforms, use ``crc32(data) & 0xffffffff``.
-.. function:: decompress(data, wbits=MAX_WBITS, bufsize=DEF_BUF_SIZE)
+.. function:: decompress(data, /, wbits=MAX_WBITS, bufsize=DEF_BUF_SIZE)
Decompresses the bytes in *data*, returning a bytes object containing the
uncompressed data. The *wbits* parameter depends on