Pending removal in Python 3.20

• Calling the __new__() method of struct.Struct without the format argument is deprecated and will be removed in Python 3.20. Calling ~object.__init__ method on initialized ~struct.Struct objects is deprecated and will be removed in Python 3.20.

  (Contributed by Sergey B Kirpichev and Serhiy Storchaka in 143715.)

• The __version__, version and VERSION attributes have been deprecated in these standard library modules and will be removed in Python 3.20. Use sys.version_info instead.

  • argparse
  • csv
  • ctypes
  • !ctypes.macholib
  • decimal (use decimal.SPEC_VERSION instead)
  • http.server
  • imaplib
  • ipaddress
  • json
  • logging (__date__ also deprecated)
  • optparse
  • pickle
  • platform
  • re
  • socketserver
  • tabnanny
  • tarfile
  • tkinter.font
  • tkinter.ttk
  • wsgiref.simple_server
  • xml.etree.ElementTree
  • !xml.sax.expatreader
  • xml.sax.handler
  • zlib

  (Contributed by Hugo van Kemenade and Stan Ulbrych in 76007.)

• The __author__, __credits__, __copyright__ and __date__ attributes have been deprecated in these standard library modules and will be removed in Python 3.20. Attribution is preserved in the source code and the version control history.

  • bz2
  • concurrent.futures
  • inspect
  • io
  • json
  • logging
  • optparse
  • platform
  • pydoc
  • tarfile
  • tkinter.ttk
  • tokenize
  • uuid

  (Contributed by Stan Ulbrych in 159240.)

• Deprecations defined by 829:

  • Warnings are produced for import lines found in {name}.pth files.
  • {name}.pth files are no longer decoded in the locale encoding by default. They MUST be encoded in utf-8-sig.

  (Contributed by Barry Warsaw in 148641.)

• ast:

  • Creating instances of abstract AST nodes (such as ast.AST or !ast.expr) is deprecated and will raise an error in Python 3.20.

• typing:

  • It is deprecated to call isinstance and issubclass checks on protocol classes that were not explicitly decorated with !runtime_checkable but that inherit from a runtime-checkable protocol class. This will raise a TypeError in Python 3.20.

    (Contributed by Bartosz Sławecki in 132604.)