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Michael Selik 2702638eab bpo-34002: Minor efficiency and clarity improvements in email package. (GH-7999) 
* Check intersection of two sets explicitly

Comparing ``len(a) > ``len(a - b)`` is essentially looking for an
intersection between the two sets. If set ``b`` does not intersect ``a``
then ``len(a - b)`` will be equal to ``len(a)``. This logic is more
clearly expressed as ``a & b``.

* Change while/pop to a for-loop

Copying the list, then repeatedly popping the first element was
unnecessarily slow. I also cleaned up a couple other inefficiencies.
There's no need to unpack a tuple, then re-pack and append it. The list
can be created with the first element instead of empty. Secondly, the
``endswith`` method returns a bool, so there's no need for an if-
statement to set ``encoding`` to True or False.

* Use set.intersection to check for intersections

``a.intersection(b)`` method is more clear of purpose than ``not
a.isdisjoint(b)`` and avoids an unnecessary set construction that ``a &
set(b)`` performs.

* Use not isdisjoint instead of intersection

While it reads slightly worse, the isdisjoint method will stop when it
finds a counterexample and returns a bool, rather than looping over the
entire iterable and constructing a new set.
 		2019-09-19 20:25:55 -07:00
..
asyncio bpo-34037: Fix test_asyncio failure and add loop.shutdown_default_executor() (GH-15735) 2019-09-19 15:47:22 +03:00
collections bpo-36582: Make collections.UserString.encode() return bytes, not str (GH-13138) 2019-08-27 21:38:09 -07:00
concurrent bpo-31783: Fix a race condition creating workers during shutdown (#13171) 2019-06-28 11:54:52 -07:00
ctypes bpo-36253: Remove use after free reference in ctypes test suite (GH-12257) 2019-09-10 08:20:15 -07:00
curses [3.9] bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-12620) 2019-06-05 18:22:31 +03:00
dbm bpo-36232: Improve error message on dbm.open() when the db doesn't exist (GH-12060) 2019-04-29 16:23:28 -07:00
distutils bpo-38088: Fixes distutils not finding vcruntime140.dll with only v142 toolset installed (GH-15849) 2019-09-10 14:52:23 +01:00
email bpo-34002: Minor efficiency and clarity improvements in email package. (GH-7999) 2019-09-19 20:25:55 -07:00
encodings bpo-34519: Add additional aliases for HP Roman 8 (GH-8956) 2019-09-11 14:08:41 +01:00
ensurepip bpo-37449: Move ensurepip off of pkgutil and to importlib.resources (GH-15109) 2019-09-13 09:01:20 -07:00
html bpo-37328: remove deprecated HTMLParser.unescape (GH-14186) 2019-08-27 11:48:06 +09:00
http bpo-12144: Handle cookies with expires attribute in CookieJar.make_cookies (GH-13921) 2019-09-13 04:29:00 -07:00
idlelib bpo-35379: When exiting IDLE, catch any AttributeError. (GH-16212) 2019-09-17 02:05:04 -04:00
importlib bpo-38121: Sync importlib.metadata with 0.22 backport (GH-15993) 2019-09-12 10:29:11 +01:00
json json.tool: use stdin and stdout in default cmdlne arguments (GH-11992) 2019-05-14 18:52:42 +02:00
lib2to3 Fix typos in comments, docs and test names (#15018) 2019-07-30 18:16:13 -04:00
logging bpo-37742: Return the root logger when logging.getLogger('root') is c… (#15077) 2019-08-02 16:53:00 +01:00
msilib bpo-12639: msilib.Directory.start_component() fails if *keyfile* is not None (GH-13688) 2019-05-31 09:43:13 -07:00
multiprocessing bpo-38092: Reduce overhead when using multiprocessing in a Windows virtual environment (GH-16098) 2019-09-13 09:40:19 -07:00
pydoc_data Python 3.8.0b1 2019-06-04 19:44:34 +02:00
site-packages
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sqlite3 bpo-38185: Fixed case-insensitive string comparison in sqlite3.Row indexing. (GH-16190) 2019-09-17 09:20:56 +03:00
test bpo-38140: Make dict and weakref offsets opaque for C heap types (#16076) 2019-09-19 17:29:05 +01:00
tkinter bpo-15999: Clean up of handling boolean arguments. (GH-15610) 2019-09-01 12:16:51 +03:00
turtledemo Mark files as executable that are meant as scripts. (GH-15354) 2019-09-09 07:16:33 -07:00
unittest bpo-37828: Fix default mock_name in unittest.mock.assert_called error (GH-16166) 2019-09-17 12:16:08 +01:00
urllib bpo-25068: urllib.request.ProxyHandler now lowercases the dict keys (GH-13489) 2019-09-13 15:07:07 +01:00
venv bpo-37885: venv: Don't produce unbound variable warning on deactivate (GH-15330) 2019-09-11 07:58:56 -07:00
wsgiref bpo-8138: Initialize wsgiref's SimpleServer as single-threaded (GH-12977) 2019-05-24 20:24:42 +03:00
xml bpo-32424: Deprecate xml.etree.ElementTree.Element.copy() in favor of copy.copy() (GH-12995) 2019-09-10 16:22:01 +01:00
xmlrpc bpo-38038: Remove urllib.parse._splittype from xmlrpc.client. (GH-15703) 2019-09-08 11:54:02 +03:00
__future__.py bpo-35526: make __future__.barry_as_FLUFL mandatory for Python 4.0 (#11218) 2018-12-19 08:19:39 -08:00
__phello__.foo.py
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_bootlocale.py
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_collections_abc.py bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-13700) 2019-06-01 11:00:15 +03:00
_compat_pickle.py bpo-37757: Disallow PEP 572 cases that expose implementation details (GH-15131) 2019-08-25 23:45:40 +10:00
_compression.py
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_markupbase.py
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_osx_support.py bpo-35257: Avoid leaking LTO linker flags into distutils (GH-10900) 2018-12-19 18:19:01 +01:00
_py_abc.py bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-13700) 2019-06-01 11:00:15 +03:00
_pydecimal.py bpo-36793: Remove unneeded __str__ definitions. (GH-13081) 2019-05-06 22:29:40 +03:00
_pyio.py bpo-15999: Clean up of handling boolean arguments. (GH-15610) 2019-09-01 12:16:51 +03:00
_sitebuiltins.py
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_strptime.py
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_threading_local.py bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-13700) 2019-06-01 11:00:15 +03:00
_weakrefset.py bpo-36949: Implement __repr__ on WeakSet (GH-13415) 2019-05-20 10:01:07 -07:00
abc.py bpo-35609: Remove examples for deprecated decorators in the abc module. (GH-11355) 2018-12-31 09:56:21 +02:00
aifc.py bpo-37320: Remove openfp() of aifc, sunau and wave (GH-14169) 2019-06-18 00:00:24 +02:00
antigravity.py Change the xkcd link in comment over https. (GH-5452) 2018-09-13 22:45:00 -07:00
argparse.py bpo-8538: Add support for boolean actions to argparse (GH-11478) 2019-09-13 11:17:43 +01:00
ast.py bpo-38049: Add command-line interface for the ast module. (GH-15724) 2019-09-09 23:36:13 +03:00
asynchat.py
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asyncore.py bpo-15999: Always pass bool instead of int to socket.setblocking(). (GH-15621) 2019-09-01 12:12:52 +03:00
base64.py
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bdb.py Fix typos mostly in comments, docs and test names (GH-15209) 2019-08-30 16:21:19 -04:00
binhex.py
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bisect.py remove duplicate code in biscet (GH-1270) 2019-04-08 17:01:09 +09:00
bz2.py bpo-35128: Fix spacing issues in warning.warn() messages. (GH-10268) 2018-11-01 12:33:35 +02:00
cProfile.py [3.9] bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-12620) 2019-06-05 18:22:31 +03:00
calendar.py bpo-28292: Mark calendar.py helper functions as private. (GH-15113) 2019-08-04 13:14:03 -07:00
cgi.py bpo-20504 : in cgi.py, fix bug when a multipart/form-data request has… (#10638) 2019-09-11 12:05:53 +01:00
cgitb.py
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chunk.py
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cmd.py
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code.py
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codecs.py bpo-33361: Fix bug with seeking in StreamRecoders (GH-8278) 2019-05-31 22:44:00 +03:00
codeop.py bpo-15999: Clean up of handling boolean arguments. (GH-15610) 2019-09-01 12:16:51 +03:00
colorsys.py
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compileall.py bpo-36786: Run compileall in parallel during "make install" (GH-13078) 2019-05-15 23:45:18 +02:00
configparser.py fix typo in configparser doc (GH-12154) 2019-03-03 18:23:19 -08:00
contextlib.py [3.9] bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-12620) 2019-06-05 18:22:31 +03:00
contextvars.py
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copy.py
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copyreg.py bpo-33138: Change standard error message for non-pickleable and non-copyable types. (GH-6239) 2018-10-31 02:28:07 +02:00
crypt.py bpo-25172: Raise appropriate ImportError msg when crypt module used on Windows (GH-15149) 2019-08-08 21:02:49 +01:00
csv.py bpo-27497: Add return value to csv.DictWriter.writeheader (GH-12306) 2019-05-10 03:50:11 +02:00
dataclasses.py bpo-37868: Improve is_dataclass for instances. (GH-15325) 2019-08-20 01:40:28 -04:00
datetime.py bpo-38155: Add __all__ to datetime module (GH-16203) 2019-09-19 14:34:41 +01:00
decimal.py
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difflib.py Fix difflib `?` hint in diff output when dealing with tabs (#15201) 2019-08-21 13:59:25 -05:00
dis.py bpo-36540: PEP 570 -- Implementation (GH-12701) 2019-04-29 13:36:57 +01:00
doctest.py bpo-15999: Clean up of handling boolean arguments. (GH-15610) 2019-09-01 12:16:51 +03:00
enum.py bpo-34443: Use __qualname__ instead of __name__ in enum exception messages. (GH-14809) 2019-07-18 11:37:13 -07:00
filecmp.py
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fileinput.py bpo-37014: Update docstring and Documentation of fileinput.FileInput(). (GH-13545) 2019-06-02 23:01:49 +02:00
fnmatch.py
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formatter.py
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fractions.py Add a minor `Fraction.__hash__()` optimization (GH-15313) 2019-08-16 21:09:16 -05:00
ftplib.py Enforce PEP 257 conventions in ftplib.py (GH-15604) 2019-09-02 21:21:33 -07:00
functools.py Doc: Fix Wikipedia link for functools.lru_cache (GH-16183) 2019-09-16 20:36:14 +02:00
genericpath.py bpo-30974: Change os.path.samefile docstring to match docs (GH-7337) 2019-08-02 15:44:25 -07:00
getopt.py
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getpass.py
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gettext.py bpo-36239: Skip comments in gettext infos (GH-12255) 2019-05-09 16:22:15 +02:00
glob.py bpo-37363: Add audit events for a range of modules (GH-14301) 2019-06-24 08:42:54 -07:00
gzip.py bpo-6584: Add a BadGzipFile exception to the gzip module. (GH-13022) 2019-05-13 10:50:52 +03:00
hashlib.py bpo-38153: Normalize hashlib algorithm names (GH-16083) 2019-09-13 14:31:19 +01:00
heapq.py bpo-29984: Improve 'heapq' test coverage (GH-992) 2019-05-31 21:13:57 -07:00
hmac.py bpo-33604: Remove deprecated HMAC default value marked for removal in 3.8 (GH-7063) 2018-09-10 11:10:01 -07:00
imaplib.py Fix typos in comments, docs and test names (#15018) 2019-07-30 18:16:13 -04:00
imghdr.py
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imp.py
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inspect.py bpo-34706: Preserve subclassing in inspect.Signature.from_callable (GH-16108) 2019-09-13 17:13:51 +01:00
io.py bpo-36842: Implement PEP 578 (GH-12613) 2019-05-23 08:45:22 -07:00
ipaddress.py bpo-32820: __format__ method for ipaddress (#5627) 2019-09-12 10:03:31 +01:00
keyword.py bpo-36143: Regenerate Lib/keyword.py from the Grammar and Tokens file using pgen (GH-12456) 2019-03-25 22:01:12 +00:00
linecache.py
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locale.py bpo-18378: Recognize "UTF-8" as a valid name in locale._parse_localename (GH-14736) 2019-08-29 00:33:52 -04:00
lzma.py
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mailbox.py bpo-31522: mailbox.get_string: pass `from_` parameter to `get_bytes` (#9857) 2018-10-18 20:21:47 -04:00
mailcap.py
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mimetypes.py bpo-37305: add MIME type for Web App Manifest (#14199) 2019-09-11 14:32:04 +01:00
modulefinder.py bpo-37032: Add CodeType.replace() method (GH-13542) 2019-05-24 23:57:23 +02:00
netrc.py
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nntplib.py bpo-37390: Add audit event table to documentations (GH-14406) 2019-06-27 10:47:59 -07:00
ntpath.py bpo-38081: Add more non-fatal error codes for ntpath.realpath (GH-16156) 2019-09-16 15:25:11 +01:00
nturl2path.py
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numbers.py
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opcode.py bpo-34880: Add the LOAD_ASSERTION_ERROR opcode. (GH-15073) 2019-08-25 12:44:09 +03:00
operator.py bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-13700) 2019-06-01 11:00:15 +03:00
optparse.py bpo-34605: Avoid master/slave terms (GH-9101) 2018-09-07 17:30:33 +02:00
os.py closes bpo-25461: Update os.walk() docstring to match the online docs. (GH-11836) 2019-09-10 13:43:58 +01:00
pathlib.py bpo-31163: Added return values to pathlib.Path instance's rename and replace methods. (GH-13582) 2019-09-11 14:26:49 +01:00
pdb.py closes bpo-37803: pdb: fix handling of options (--help / --version) (GH-15193) 2019-09-12 16:46:37 +01:00
pickle.py bpo-37210: Fix pure Python pickle when _pickle is unavailable (GH-14016) 2019-06-13 13:58:51 +02:00
pickletools.py bpo-36785: PEP 574 implementation (GH-7076) 2019-05-26 17:10:09 +02:00
pipes.py
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pkgutil.py
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platform.py bpo-35389: platform.platform() calls libc_ver() without executable (GH-14418) 2019-06-27 09:04:28 +02:00
plistlib.py bpo-36409: Remove old plistlib API deprecated in 3.4 (GH-15615) 2019-09-05 10:11:35 +02:00
poplib.py bpo-37390: Add audit event table to documentations (GH-14406) 2019-06-27 10:47:59 -07:00
posixpath.py bpo-35755: Remove current directory from posixpath.defpath (GH-11586) 2019-04-17 17:05:30 +02:00
pprint.py bpo-37376: pprint support for SimpleNamespace (GH-14318) 2019-06-26 16:13:18 -07:00
profile.py [3.9] bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-12620) 2019-06-05 18:22:31 +03:00
pstats.py Fix typos in docs and docstrings (GH-13745) 2019-06-03 01:12:33 +02:00
pty.py
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py_compile.py bpo-22640: Add silent mode to py_compile.compile() (GH-12976) 2019-05-28 19:29:04 +03:00
pyclbr.py Fix typos in docs and docstrings (GH-13745) 2019-06-03 01:12:33 +02:00
pydoc.py Mark files as executable that are meant as scripts. (GH-15354) 2019-09-09 07:16:33 -07:00
queue.py bpo-37394: Fix pure Python implementation of the queue module (GH-14351) 2019-06-25 02:53:30 +01:00
quopri.py bpo-15999: Clean up of handling boolean arguments. (GH-15610) 2019-09-01 12:16:51 +03:00
random.py bpo-32554: Deprecate hashing arbitrary types in random.seed() (GH-15382) 2019-08-22 09:19:36 -07:00
re.py bpo-36548: Improve the repr of re flags. (GH-12715) 2019-05-31 10:39:47 +03:00
reprlib.py
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rlcompleter.py
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runpy.py
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sched.py
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secrets.py
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selectors.py
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shelve.py
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shlex.py bpo-35168: Make shlex.punctuation_chars read-only (#11631) 2019-09-11 12:04:04 +01:00
shutil.py Clarify that shutil's copy functions can accept path-like values (GH-15141) 2019-09-09 08:51:56 -07:00
signal.py bpo-34282: Fix Enum._convert shadowing members named _convert (GH-8568) 2018-09-12 10:28:53 -07:00
site.py bpo-37369: Fix initialization of sys members when launched via an app container (GH-14428) 2019-06-29 10:34:11 -07:00
smtpd.py
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smtplib.py bpo-32793: Fix a duplicate debug message in smtplib (GH-15341) 2019-08-20 10:52:25 -07:00
sndhdr.py
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socket.py bpo-28724: Add methods send_fds and recv_fds to the socket module (GH-12889) 2019-09-11 19:12:21 +02:00
socketserver.py Fix typo in socketserver docstring (GH-11252) 2018-12-21 14:22:09 -08:00
sre_compile.py Simplify flags checks in sre_compile.py. (GH-9718) 2018-10-05 20:53:45 +03:00
sre_constants.py bpo-36793: Remove unneeded __str__ definitions. (GH-13081) 2019-05-06 22:29:40 +03:00
sre_parse.py bpo-37723: Fix performance regression on regular expression parsing. (GH-15030) 2019-07-31 21:50:39 +03:00
ssl.py bpo-37463: match_hostname requires quad-dotted IPv4 (GH-14499) 2019-07-02 11:39:42 -07:00
stat.py
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statistics.py bpo-36546: No longer a need to make "data" positional only (GH-16252) 2019-09-17 20:45:05 -07:00
string.py bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-13700) 2019-06-01 11:00:15 +03:00
stringprep.py
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struct.py
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subprocess.py bpo-36046: Add user and group parameters to subprocess (GH-11950) 2019-09-12 18:15:44 +01:00
sunau.py bpo-37320: Remove openfp() of aifc, sunau and wave (GH-14169) 2019-06-18 00:00:24 +02:00
symbol.py bpo-35766: Merge typed_ast back into CPython (GH-11645) 2019-01-31 12:40:27 +01:00
symtable.py bpo-34983: Expose symtable.Symbol.is_nonlocal() in the symtable module (GH-9872) 2018-10-20 01:46:00 +01:00
sysconfig.py bpo-37201: fix test_distutils failures for Windows ARM64 (GH-13902) 2019-06-12 10:16:49 -07:00
tabnanny.py
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tarfile.py Add missing docstrings for TarInfo objects (#12555) 2019-03-27 13:16:34 -07:00
telnetlib.py bpo-37363: Add audit events for a range of modules (GH-14301) 2019-06-24 08:42:54 -07:00
tempfile.py bpo-37363: Add audit events for a range of modules (GH-14301) 2019-06-24 08:42:54 -07:00
textwrap.py bpo-30754: Document textwrap.dedent blank line behavior. (GH-14469) 2019-06-29 21:20:03 -07:00
this.py
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threading.py bpo-15999: Clean up of handling boolean arguments. (GH-15610) 2019-09-01 12:16:51 +03:00
timeit.py
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token.py bpo-35975: Support parsing earlier minor versions of Python 3 (GH-12086) 2019-03-07 12:38:08 -08:00
tokenize.py bpo-5028: Fix up rest of documentation for tokenize documenting line (GH-13686) 2019-05-30 15:06:32 -07:00
trace.py [3.9] bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-12620) 2019-06-05 18:22:31 +03:00
traceback.py bpo-37685: Fixed __eq__, __lt__ etc implementations in some classes. (GH-14952) 2019-08-08 08:42:54 +03:00
tracemalloc.py bpo-37685: Fixed __eq__, __lt__ etc implementations in some classes. (GH-14952) 2019-08-08 08:42:54 +03:00
tty.py
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turtle.py Fix typos in docs and docstrings (GH-13745) 2019-06-03 01:12:33 +02:00
types.py bpo-37032: Add CodeType.replace() method (GH-13542) 2019-05-24 23:57:23 +02:00
typing.py bpo-38191: Turn warnings into errors in NamedTuple() and TypedDict(). (GH-16238) 2019-09-17 22:41:55 +03:00
uu.py bpo-33687: Fix call to os.chmod() in uu.decode() (GH-7282) 2019-01-17 17:15:53 +03:00
uuid.py bpo-9216: Add usedforsecurity to hashlib constructors (GH-16044) 2019-09-12 19:30:00 -05:00
warnings.py bpo-35178: Fix warnings._formatwarnmsg() (GH-12033) 2019-03-01 18:17:55 +01:00
wave.py bpo-37320: Remove openfp() of aifc, sunau and wave (GH-14169) 2019-06-18 00:00:24 +02:00
weakref.py bpo-38006: Avoid closure in weakref.WeakValueDictionary (GH-15641) 2019-09-09 16:55:58 +02:00
webbrowser.py bpo-37363: Add audit events for a range of modules (GH-14301) 2019-06-24 08:42:54 -07:00
xdrlib.py
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zipapp.py
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zipfile.py bpo-36991: Fix incorrect exception escaping ZipFile.extract() (GH-13632) 2019-09-12 15:13:44 +01:00
zipimport.py bpo-36842: Implement PEP 578 (GH-12613) 2019-05-23 08:45:22 -07:00