bpo-45085: Remove the binhex module (GH-28117)

The binhex module, deprecated in Python 3.9, is now removed. The
following binascii functions, deprecated in Python 3.9, are now also
removed:

* a2b_hqx(), b2a_hqx();
* rlecode_hqx(), rledecode_hqx().

The binascii.crc_hqx() function remains available.

Author: vstinner

Doc/library/binascii.rst

@@ -8,14 +8,13 @@
 .. index::
    module: uu
    module: base64
-   module: binhex
 
 --------------
 
 The :mod:`binascii` module contains a number of methods to convert between
 binary and various ASCII-encoded binary representations. Normally, you will not
-use these functions directly but use wrapper modules like :mod:`uu`,
-:mod:`base64`, or :mod:`binhex` instead. The :mod:`binascii` module contains
+use these functions directly but use wrapper modules like :mod:`uu` or
+:mod:`base64` instead. The :mod:`binascii` module contains
 low-level functions written in C for greater speed that are used by the
 higher-level modules.
 
@@ -98,45 +97,6 @@ The :mod:`binascii` module defines the following functions:
    stream.
 
 
-.. function:: a2b_hqx(string)
-
-   Convert binhex4 formatted ASCII data to binary, without doing RLE-decompression.
-   The string should contain a complete number of binary bytes, or (in case of the
-   last portion of the binhex4 data) have the remaining bits zero.
-
-   .. deprecated:: 3.9
-
-
-.. function:: rledecode_hqx(data)
-
-   Perform RLE-decompression on the data, as per the binhex4 standard. The
-   algorithm uses ``0x90`` after a byte as a repeat indicator, followed by a count.
-   A count of ``0`` specifies a byte value of ``0x90``. The routine returns the
-   decompressed data, unless data input data ends in an orphaned repeat indicator,
-   in which case the :exc:`Incomplete` exception is raised.
-
-   .. versionchanged:: 3.2
-      Accept only bytestring or bytearray objects as input.
-
-   .. deprecated:: 3.9
-
-
-.. function:: rlecode_hqx(data)
-
-   Perform binhex4 style RLE-compression on *data* and return the result.
-
-   .. deprecated:: 3.9
-
-
-.. function:: b2a_hqx(data)
-
-   Perform hexbin4 binary-to-ASCII translation and return the resulting string. The
-   argument should already be RLE-coded, and have a length divisible by 3 (except
-   possibly the last fragment).
-
-   .. deprecated:: 3.9
-
-
 .. function:: crc_hqx(data, value)
 
    Compute a 16-bit CRC value of *data*, starting with *value* as the
@@ -222,9 +182,6 @@ The :mod:`binascii` module defines the following functions:
       Support for RFC compliant base64-style encoding in base 16, 32, 64,
       and 85.
 
-   Module :mod:`binhex`
-      Support for the binhex format used on the Macintosh.
-
    Module :mod:`uu`
       Support for UU encoding used on Unix.
 

Doc/library/binhex.rst

@@ -17,7 +17,6 @@ on the internet.
    mailbox.rst
    mimetypes.rst
    base64.rst
-   binhex.rst
    binascii.rst
    quopri.rst
    uu.rst

Doc/library/netdata.rst

@@ -235,9 +235,21 @@ sqlite3
 
 Removed
 =======
+
 * :class:`smtpd.MailmanProxy` is now removed as it is unusable without
   an external module, ``mailman``. (Contributed by Dong-hee Na in :issue:`35800`.)
 
+* The ``binhex`` module, deprecated in Python 3.9, is now removed.
+  The following :mod:`binascii` functions, deprecated in Python 3.9, are now
+  also removed:
+
+  * ``a2b_hqx()``, ``b2a_hqx()``;
+  * ``rlecode_hqx()``, ``rledecode_hqx()``.
+
+  The :func:`binascii.crc_hqx` function remains available.
+
+  (Contributed by Victor Stinner in :issue:`45085`.)
+
 
 Optimizations
 =============