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Miss Islington (bot) d0e04c8244
bpo-32873: Treat type variables and special typing forms as immutable by copy and pickle (GH-6216) 
This also fixes python/typingGH-512
This also fixes python/typingGH-511

As was discussed in both issues, some typing forms deserve to be treated
as immutable by copy and pickle modules, so that:
* copy(X) is X
* deepcopy(X) is X
* loads(dumps(X)) is X  GH- pickled by reference

This PR adds such behaviour to:
* Type variables
* Special forms like Union, Any, ClassVar
* Unsubscripted generic aliases to containers like List, Mapping, Iterable

This not only resolves inconsistencies mentioned in the issues, but also
improves backwards compatibility with previous versions of Python
(including 3.6).

Note that this requires some dances with __module__ for type variables
(similar to NamedTuple) because the class TypeVar itself is define in typing,
while type variables should get module where they were defined.

https://bugs.python.org/issue32873
(cherry picked from commit 834940375a)

Co-authored-by: Ivan Levkivskyi <levkivskyi@gmail.com>
2018-03-26 15:29:06 -07:00
..
asyncio bpo-33037: Skip sending/receiving after SSL transport closing (GH-6044) (GH-6057) 2018-03-10 18:27:01 +02:00
collections bpo-25988: Emit a warning when use or import ABCs from 'collections'. (GH-5734) 2018-02-18 17:40:59 +00:00
concurrent bpo-33056 FIX leaking fd in concurrent.futures.ProcessPoolExecutor (GH-6084) (#6092) 2018-03-13 10:10:57 +01:00
ctypes [3.7] bpo-32746: Fix multiple typos (GH-5144) (GH-5520) 2018-02-03 20:41:43 -05:00
curses Issue #13051: Fixed recursion errors in large or resized curses.textpad.Textbox. 2016-12-28 10:16:06 +02:00
dbm bpo-30144: Import collections ABC from collections.abc rather than collections. (#1263) 2017-04-24 09:05:00 +03:00
distutils Improve error message for "setup.py upload" without dist files (GH-21060) 2018-02-18 19:57:17 -08:00
email [3.7] bpo-32746: Fix multiple typos (GH-5144) (GH-5520) 2018-02-03 20:41:43 -05:00
encodings bpo-32943: Fix confusing error message for rot13 codec (GH-5869) 2018-03-24 21:30:39 -07:00
ensurepip Upgrade pip to v9.0.3 and setuptools to v39.0.1 (GH-6184) 2018-03-21 23:38:24 -04:00
html bpo-30629: Remove second call of str.lower() in html.parser.parse_endtag. (#2099) 2017-06-16 21:15:25 -04:00
http bpo-31639: Use threads in http.server module. (GH-5018) 2018-03-23 13:31:20 -07:00
idlelib bpo-32984: IDLE - set __file__ for startup files (GH-5981) 2018-03-05 08:49:15 -08:00
importlib bpo-32838: Fix Python versions in the table of magic numbers. (GH-5658) 2018-02-23 11:01:54 -08:00
json bpo-32360: Remove OrderedDict usage from json.tool (GH-5315) 2018-01-25 19:52:58 +09:00
lib2to3 Revert "bpo-30406: Make async and await proper keywords (GH-1669)" (GH-6143) 2018-03-18 12:15:52 -07:00
logging Revert unneccessary changes made in bpo-30296 and apply other improvements. (GH-2624) 2018-02-26 08:22:24 -08:00
msilib Remove all mention of Windows IA-64 support (GH-3389) 2017-09-06 15:45:25 -07:00
multiprocessing bpo-33078 - Fix queue size on pickling error (GH-6119) (GH-6178) 2018-03-21 17:21:15 +01:00
pydoc_data Update NEWS, docs, and patchlevel for 3.7.0b2 2018-02-27 19:49:18 -05:00
site-packages Issue #29283: Delete accidentally added Lib/site-packages/README 2017-01-30 13:55:49 +03:00
sqlite3 bpo-27645: Fix version number in 'database in transaction' fallback (GH-6131) 2018-03-18 09:24:33 +03:00
test bpo-32873: Treat type variables and special typing forms as immutable by copy and pickle (GH-6216) 2018-03-26 15:29:06 -07:00
tkinter bpo-33096: Fix ttk.Treeview.insert. (GH-6228) 2018-03-26 01:19:52 -07:00
turtledemo bpo-32297: Few misspellings found in Python source code comments. (#4803) 2017-12-14 13:04:53 +02:00
unittest [3.7] bpo-32746: Fix multiple typos (GH-5144) (GH-5520) 2018-02-03 20:41:43 -05:00
urllib Revert unneccessary changes made in bpo-30296 and apply other improvements. (GH-2624) 2018-02-26 08:22:24 -08:00
venv bpo-32409: Ensures activate.bat can handle Unicode contents (GH-5765) 2018-02-19 17:45:02 -08:00
wsgiref Remove tiny bit of deadcode from wsgiref.validate (#3996) 2017-10-31 00:07:36 -04:00
xml bpo-32297: Few misspellings found in Python source code comments. (#4803) 2017-12-14 13:04:53 +02:00
xmlrpc bpo-32297: Few misspellings found in Python source code comments. (#4803) 2017-12-14 13:04:53 +02:00
__future__.py String annotations [PEP 563] (#4390) 2018-01-26 08:20:18 -08:00
__phello__.foo.py
_bootlocale.py bpo-29240: PEP 540: Add a new UTF-8 Mode (#855) 2017-12-13 12:29:09 +01:00
_collections_abc.py bpo-32467: Let collections.abc.ValuesView inherit from Collection (#5152) 2018-01-11 21:53:49 -08:00
_compat_pickle.py
_compression.py
_dummy_thread.py Restore dummy_threading and _dummy_thread, but deprecate them (bpo-31370) (#3648) 2017-09-18 22:04:20 +02:00
_markupbase.py
_osx_support.py Fix misplaced positional argument in OS X support library (#1134) 2017-04-14 15:28:55 +03:00
_py_abc.py bpo-33018: Improve issubclass() error checking and message. (GH-5944) 2018-03-22 04:49:26 -07:00
_pydecimal.py bpo-32630: Use contextvars in decimal (GH-5278) 2018-01-27 13:46:46 -05:00
_pyio.py bpo-15216: io: TextIOWrapper.reconfigure() accepts encoding, errors and newline (GH-2343) 2017-12-21 09:59:53 +09:00
_sitebuiltins.py
_strptime.py Fix when parsing tz offsets microseconds shorter than 6 (#4781) 2018-01-09 16:37:26 -05:00
_threading_local.py Delete a broken threading.local example (GH-5870) 2018-02-25 07:23:25 -08:00
_weakrefset.py bpo-30296 Remove unnecessary tuples, lists, sets, and dicts (#1489) 2017-05-18 07:35:54 -07:00
abc.py bpo-31333: Re-implement ABCMeta in C (GH-5733) 2018-02-18 17:39:43 +00:00
aifc.py bpo-32056: Improve exceptions in aifc, wave and sunau. (GH-5951) 2018-03-18 13:50:41 -07:00
antigravity.py Issue #28181: Get antigravity over HTTPS. Patch by Kaartic Sivaraam. 2016-09-16 13:48:10 +02:00
argparse.py OrderedDict import is no longer needed (#4890) 2018-01-11 22:20:33 -08:00
ast.py bpo-31778: Make ast.literal_eval() more strict. (#4035) 2018-01-04 11:15:39 +02:00
asynchat.py Issue #25002: Back out asyncore/asynchat deprecation. 2016-10-25 18:42:51 -07:00
asyncore.py bpo-29639: change test.support.HOST to "localhost" 2017-09-09 00:30:15 -07:00
base64.py Add Python version since deprecation in base64 methods. (#33) 2017-03-02 17:21:26 +03:00
bdb.py bpo-32650 Add support for async generators and more test for coroutines in pdb (#5403) 2018-01-28 20:31:00 -05:00
binhex.py
bisect.py Issue #28792: Remove aliases from _bisect 2016-11-24 23:31:59 +01:00
bz2.py bpo-31370: Remove support for threads-less builds (#3385) 2017-09-07 18:56:24 +02:00
calendar.py Closes bpo-28281: Remove year (1-9999) limits on the weekday() function. (#4109) 2017-10-26 15:34:11 -04:00
cgi.py bpo-29979: Rewrite cgi.parse_multipart to make it consistent with FieldStorage (#991) 2017-05-08 05:08:34 -07:00
cgitb.py
chunk.py bpo-29762: More use "raise from None". (#569) 2017-04-05 09:37:24 +03:00
cmd.py
code.py bpo-30166: Import command-line parsing modules only when needed. (#1293) 2017-05-04 08:17:47 +03:00
codecs.py bpo-32110: codecs.StreamReader.read(n) now returns not more than n (#4499) 2017-11-29 01:30:00 +02:00
codeop.py
colorsys.py
compileall.py closes bpo-31650: PEP 552 (Deterministic pycs) implementation (#4575) 2017-12-09 10:26:52 -08:00
configparser.py bpo-31307: Make ConfigParser.read() accept bytes objects (GH-3420) 2017-11-02 15:47:04 +03:00
contextlib.py bpo-30306: release arguments of contextmanager (GH-1500) 2018-01-28 14:17:46 +10:00
contextvars.py bpo-32436: Implement PEP 567 (#5027) 2018-01-22 19:11:18 -05:00
copy.py
copyreg.py bpo-31107: Fix copyreg mangled slot names calculation. (#2989) 2017-08-04 11:45:00 +03:00
cProfile.py bpo-21862: Add -m option to cProfile for profiling modules (#4297) 2017-11-08 11:50:56 +01:00
crypt.py bpo-31702: Allow to specify rounds for SHA-2 hashing in crypt.mksalt(). (#4110) 2017-11-16 13:22:51 +02:00
csv.py bpo-30157: Fix csv.Sniffer.sniff() regex pattern. (GH-5601) (GH-5602) 2018-02-10 00:00:48 +02:00
dataclasses.py bpo-33141: Have dataclasses.Field pass through __set_name__ to any default argument. (GH-6260) 2018-03-26 10:55:13 -07:00
datetime.py bpo-15873: Implement [date][time].fromisoformat (#4699) 2017-12-21 00:33:49 -05:00
decimal.py
difflib.py bpo-32981: Fix catastrophic backtracking vulns (GH-5955) 2018-03-03 21:55:07 -08:00
dis.py bpo-31183: dis now handles coroutines & async generators (GH-3077) 2017-08-18 12:29:21 +10:00
doctest.py bpo-25054, bpo-1647489: Added support of splitting on zerowidth patterns. (#4471) 2017-12-04 14:29:05 +02:00
dummy_threading.py Restore dummy_threading and _dummy_thread, but deprecate them (bpo-31370) (#3648) 2017-09-18 22:04:20 +02:00
enum.py bpo-31801: Enum: add _ignore_ as class option (#5237) 2018-01-22 07:56:37 -08:00
filecmp.py
fileinput.py bpo-31281: Fix pathlib.Path incompatibility in fileinput (gh-3208) 2017-09-04 13:37:24 -04:00
fnmatch.py bpo-32775: Fix regular expression warnings in fnmatch. (GH-5583) (GH-5596) 2018-02-09 13:56:50 +02:00
formatter.py
fractions.py
ftplib.py bpo-31346: Use PROTOCOL_TLS_CLIENT/SERVER (#3058) 2017-09-15 20:27:30 +02:00
functools.py bpo-32227: functools.singledispatch supports registering via type annotations (#4733) 2017-12-11 13:56:31 -08:00
genericpath.py
getopt.py
getpass.py getpass: update docstrings (#49) 2017-02-12 23:10:48 +01:00
gettext.py bpo-30152: Reduce the number of imports for argparse. (#1269) 2017-09-26 00:55:55 +03:00
glob.py Issue #27998: Removed workarounds for supporting bytes paths on Windows in 2016-10-05 23:17:10 +03:00
gzip.py Replace KB unit with KiB (#4293) 2017-11-08 14:44:44 -08:00
hashlib.py Fix miscellaneous typos (#4275) 2017-11-05 15:37:50 +02:00
heapq.py Improve clarity (and small speed-up) by using tuple unpacking (#3289) 2017-09-04 11:47:58 -07:00
hmac.py bpo-32433: Optimized HMAC digest (#5023) 2018-01-27 09:53:43 +01:00
imaplib.py bpo-32157: Removed explicit quotes around %r and {!r}. (#4582) 2017-11-28 22:54:42 +02:00
imghdr.py Issue #28228: imghdr now supports pathlib 2016-10-01 05:01:54 +03:00
imp.py bpo-30645: don't append to an inner loop path in imp.load_package() (GH-2268) 2017-06-23 10:35:03 -07:00
inspect.py bpo-33009: Fix inspect.signature() for single-parameter partialmethods. (GH-6004) 2018-03-06 10:23:48 -08:00
io.py
ipaddress.py bpo-27683: Fix a regression for host() of ipaddress network objects (GH-6016) 2018-03-20 18:22:23 -07:00
keyword.py bpo-30406: Make async and await proper keywords (#1669) 2017-10-05 23:24:46 -04:00
linecache.py
locale.py bpo-29240: PEP 540: Add a new UTF-8 Mode (#855) 2017-12-13 12:29:09 +01:00
lzma.py Issue #28229: lzma module now supports pathlib 2016-10-04 20:41:20 +03:00
macpath.py bpo-31802: Fix importing native path module before importing os. (#4017) 2018-01-07 17:54:31 +02:00
mailbox.py bpo-29762: More use "raise from None". (#569) 2017-04-05 09:37:24 +03:00
mailcap.py
mimetypes.py bpo-22589 Changed MIME type of .bmp to "image/bmp" (#4756) 2017-12-08 07:48:44 -05:00
modulefinder.py closes bpo-31650: PEP 552 (Deterministic pycs) implementation (#4575) 2017-12-09 10:26:52 -08:00
netrc.py bpo-28334: netrc() now uses expanduser() to find .netrc file (GH-4537) 2017-11-25 13:37:22 +03:00
nntplib.py bpo-29762: More use "raise from None". (#569) 2017-04-05 09:37:24 +03:00
ntpath.py bpo-31802: Fix importing native path module before importing os. (#4017) 2018-01-07 17:54:31 +02:00
nturl2path.py bpo-29836: Remove nturl2path from test_sundry and amend the module docstring (GH-694) 2017-03-17 11:16:20 -07:00
numbers.py Fix miscellaneous typos (#4275) 2017-11-05 15:37:50 +02:00
opcode.py [3.7] bpo-32746: Fix multiple typos (GH-5144) (GH-5520) 2018-02-03 20:41:43 -05:00
operator.py
optparse.py
os.py bpo-32297: Few misspellings found in Python source code comments. (#4803) 2017-12-14 13:04:53 +02:00
pathlib.py bpo-31972: Improve docstrings for pathlib classes (GH-5310) 2018-02-18 16:48:07 -08:00
pdb.py [3.7] bpo-32691: Use mod_spec.parent when running modules with pdb (GH-5510) 2018-02-04 18:07:16 +10:00
pickle.py bpo-32503: Avoid creating too small frames in pickles. (#5127) 2018-01-20 16:42:44 +02:00
pickletools.py bpo-31993: Do not allocate large temporary buffers in pickle dump. (#4353) 2018-01-06 17:18:54 +02:00
pipes.py
pkgutil.py closes bpo-31650: PEP 552 (Deterministic pycs) implementation (#4575) 2017-12-09 10:26:52 -08:00
platform.py bpo-32159: Remove tools for CVS and Subversion (#4615) 2017-11-28 22:29:32 +01:00
plistlib.py bpo-32072: Fix issues with binary plists. (#4455) 2017-11-30 23:26:11 +02:00
poplib.py bpo-32981: Fix catastrophic backtracking vulns (GH-5955) 2018-03-03 21:55:07 -08:00
posixpath.py bpo-31802: Fix importing native path module before importing os. (#4017) 2018-01-07 17:54:31 +02:00
pprint.py
profile.py time.clock() now emits a DeprecationWarning (GH-4020) 2017-10-17 14:46:45 -07:00
pstats.py Revert unneccessary changes made in bpo-30296 and apply other improvements. (GH-2624) 2018-02-26 08:22:24 -08:00
pty.py
py_compile.py bpo-29708: Setting SOURCE_DATE_EPOCH forces hash-based .pyc files (GH-5200) 2018-01-24 13:26:18 -08:00
pyclbr.py bpo-6691: Pyclbr now reports nested classes and functions. (#2503) 2017-07-03 21:31:25 -04:00
pydoc.py bpo-32440: Update the docs URL to https in help() (GH-5030) 2017-12-28 06:37:46 -08:00
queue.py bpo-14976: Reentrant simple queue (#3346) 2018-01-16 00:27:16 +01:00
quopri.py
random.py bpo-31482: Missing bytes support for random.seed() version 1 (#3614) 2017-09-17 09:04:30 -07:00
re.py bpo-32338: OrderedDict import is no longer needed in re. (GH-4891) 2018-03-10 23:01:58 -08:00
reprlib.py bpo-31370: Remove support for threads-less builds (#3385) 2017-09-07 18:56:24 +02:00
rlcompleter.py
runpy.py
sched.py bpo-31370: Remove support for threads-less builds (#3385) 2017-09-07 18:56:24 +02:00
secrets.py Issue #29061: secrets.randbelow() would hang with a negative input 2016-12-29 22:54:25 -07:00
selectors.py bpo-30624 remaining bare except (#2108) 2017-06-12 14:43:40 +02:00
shelve.py bpo-30144: Import collections ABC from collections.abc rather than collections. (#1263) 2017-04-24 09:05:00 +03:00
shlex.py Fixed #29132: Updated shlex to work better with punctuation chars in POSIX mode. 2017-01-15 10:06:52 +00:00
shutil.py bpo-28564: Use os.scandir() in shutil.rmtree(). (#4085) 2017-11-04 14:16:35 +02:00
signal.py
site.py bpo-28440: Don't add /Library/Python/3.x/site-packages to sys.path (#5445) 2018-01-30 05:14:09 -05:00
smtpd.py
smtplib.py bpo-32727: smtplib's SMTP.send_message behaves differently with from_addr and to_addrs (#5451) 2018-01-31 17:01:31 -05:00
sndhdr.py bpo-31985: Deprecate openfp in aifc, sunau, and wave (#4344) 2017-11-10 11:38:25 -05:00
socket.py bpo-28134: Auto-detect socket values from file descriptor (#1349) 2018-01-29 22:37:58 +01:00
socketserver.py bpo-31233: socketserver.ThreadingMixIn.server_close() (#3523) 2017-09-13 01:47:22 -07:00
sre_compile.py bpo-31690: Allow the inline flags "a", "L", and "u" to be used as group flags for RE. (#3885) 2017-10-24 23:31:42 +03:00
sre_constants.py bpo-31690: Allow the inline flags "a", "L", and "u" to be used as group flags for RE. (#3885) 2017-10-24 23:31:42 +03:00
sre_parse.py bpo-30349: Raise FutureWarning for nested sets and set operations (#1553) 2017-11-16 12:38:26 +02:00
ssl.py [3.7] bpo-24334: Remove inaccurate match_hostname call (GH-6211) (#6212) 2018-03-24 15:59:16 +01:00
stat.py
statistics.py bpo-29919: Remove unused imports found by pyflakes (#137) 2017-03-27 16:05:26 +02:00
string.py bpo-31672: Restore the former behavior when override flags in Template. (#5099) 2018-01-04 19:20:11 +02:00
stringprep.py
struct.py
subprocess.py Revert "bpo-31961: subprocess now accepts path-like args (GH-4329)" (GH-5912) (GH-5931) 2018-02-27 18:30:30 -05:00
sunau.py bpo-32056: Improve exceptions in aifc, wave and sunau. (GH-5951) 2018-03-18 13:50:41 -07:00
symbol.py bpo-30406: Make async and await proper keywords (#1669) 2017-10-05 23:24:46 -04:00
symtable.py bpo-30296 Remove unnecessary tuples, lists, sets, and dicts (#1489) 2017-05-18 07:35:54 -07:00
sysconfig.py remove support for BSD/OS (closes bpo-31624) (#3812) 2017-09-28 22:44:27 -07:00
tabnanny.py bpo-30166: Import command-line parsing modules only when needed. (#1293) 2017-05-04 08:17:47 +03:00
tarfile.py bpo-32713: Fix tarfile.itn for large/negative float values. (GH-5434) 2018-02-26 16:50:09 -08:00
telnetlib.py bpo-30397: Add re.Pattern and re.Match. (#1646) 2017-10-04 20:09:49 +03:00
tempfile.py bpo-31370: Remove support for threads-less builds (#3385) 2017-09-07 18:56:24 +02:00
textwrap.py bpo-30620: Remove dead lines from textwrap.dedent (GH-2064) 2017-06-15 19:19:43 -07:00
this.py
threading.py bpo-31516: current_thread() should not return a dummy thread at shutdown (#3673) 2017-10-02 16:42:15 +02:00
timeit.py bpo-29661: fix contradiction in timeit.Timer.autorange's docstring (GH-331) 2017-02-28 11:06:07 +08:00
token.py bpo-25324: copy tok_name before changing it (#1608) 2017-05-31 16:00:21 +02:00
tokenize.py bpo-30406: Make async and await proper keywords (#1669) 2017-10-05 23:24:46 -04:00
trace.py bpo-32852: Fix trace changing sys.argv to tuple. (GH-5692) 2018-02-16 22:53:24 -08:00
traceback.py bpo-28603: Fix formatting tracebacks for unhashable exceptions (#4014) 2017-10-18 00:29:39 +03:00
tracemalloc.py bpo-32121: Add most_recent_first parameter to tracemalloc.Traceback.format (#4534) 2017-11-30 00:05:07 +01:00
tty.py
turtle.py Revert unneccessary changes made in bpo-30296 and apply other improvements. (GH-2624) 2018-02-26 08:22:24 -08:00
types.py bpo-32265: Classify class and static methods of builtin types. (#4776) 2017-12-15 14:13:41 +02:00
typing.py bpo-32873: Treat type variables and special typing forms as immutable by copy and pickle (GH-6216) 2018-03-26 15:29:06 -07:00
uu.py bpo-30103: Allow Uuencode in Python using backtick as zero instead of space (#1326) 2017-05-03 11:16:21 +08:00
uuid.py bpo-32370: Use the correct encoding for ipconfig output in the uuid module. (GH-5608) 2018-02-13 00:58:28 -08:00
warnings.py bpo-32591: Add native coroutine origin tracking (#5250) 2018-01-21 09:44:07 -05:00
wave.py bpo-32056: Improve exceptions in aifc, wave and sunau. (GH-5951) 2018-03-18 13:50:41 -07:00
weakref.py bpo-30152: Reduce the number of imports for argparse. (#1269) 2017-09-26 00:55:55 +03:00
webbrowser.py bpo-29645: Speed up importing the webbrowser module. (#484) 2017-03-08 17:15:54 +02:00
xdrlib.py
zipapp.py bpo-31638: Add compression support to zipapp (GH-3819) 2017-09-29 18:31:52 +01:00
zipfile.py bpo-30693: zip+tarfile: sort directory listing (#2263) 2018-01-31 17:01:55 -05:00