Document that zipfile's pwd parameter is a bytes object (pythonGH-100209)

(cherry picked from commit 5ee7eb9) Co-authored-by: JustAnotherArchivist <JustAnotherArchivist@users.noreply.github.com>

Author: JustAnotherArchivist

Doc/library/zipfile.rst

@@ -251,7 +251,8 @@ ZipFile Objects
  Access a member of the archive as a binary file-like object. *name*
  can be either the name of a file within the archive or a :class:`ZipInfo`
  object. The *mode* parameter, if included, must be ``'r'`` (the default)
- or ``'w'``. *pwd* is the password used to decrypt encrypted ZIP files.
+ or ``'w'``. *pwd* is the password used to decrypt encrypted ZIP files as a
+ :class:`bytes` object.
 
  :meth:`~ZipFile.open` is also a context manager and therefore supports the
  :keyword:`with` statement::
@@ -303,7 +304,7 @@ ZipFile Objects
  must be its full name or a :class:`ZipInfo` object. Its file information is
  extracted as accurately as possible. *path* specifies a different directory
  to extract to. *member* can be a filename or a :class:`ZipInfo` object.
- *pwd* is the password used for encrypted files.
+ *pwd* is the password used for encrypted files as a :class:`bytes` object.
 
  Returns the normalized path created (a directory or new file).
 
@@ -330,7 +331,7 @@ ZipFile Objects
  Extract all members from the archive to the current working directory. *path*
  specifies a different directory to extract to. *members* is optional and must
  be a subset of the list returned by :meth:`namelist`. *pwd* is the password
- used for encrypted files.
+ used for encrypted files as a :class:`bytes` object.
 
  .. warning::
 
@@ -355,16 +356,16 @@ ZipFile Objects
 
 .. method:: ZipFile.setpassword(pwd)
 
- Set *pwd* as default password to extract encrypted files.
+ Set *pwd* (a :class:`bytes` object) as default password to extract encrypted files.
 
 
 .. method:: ZipFile.read(name, pwd=None)
 
  Return the bytes of the file *name* in the archive. *name* is the name of the
  file in the archive, or a :class:`ZipInfo` object. The archive must be open for
- read or append. *pwd* is the password used for encrypted  files and, if specified,
- it will override the default password set with :meth:`setpassword`. Calling
- :meth:`read` on a ZipFile that uses a compression method other than
+ read or append. *pwd* is the password used for encrypted files as a :class:`bytes`
+ object and, if specified, overrides the default password set with :meth:`setpassword`.
+ Calling :meth:`read` on a ZipFile that uses a compression method other than
  :const:`ZIP_STORED`, :const:`ZIP_DEFLATED`, :const:`ZIP_BZIP2` or
  :const:`ZIP_LZMA` will raise a :exc:`NotImplementedError`. An error will also
  be raised if the corresponding compression module is not available.