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📁 ..
📄 Sine-1000Hz-300ms.aif(60.25 KB)
📄 __init__.py(47 B)
📄 __main__.py(41 B)
📁 __pycache__
📄 _test_multiprocessing.py(183.09 KB)
📄 allsans.pem(9.87 KB)
📄 ann_module.py(1.08 KB)
📄 ann_module2.py(519 B)
📄 ann_module3.py(448 B)
📁 audiodata
📄 audiotest.au(27.48 KB)
📄 audiotests.py(12.46 KB)
📄 audit-tests.py(8.9 KB)
📄 autotest.py(209 B)
📄 bad_coding.py(24 B)
📄 bad_coding2.py(30 B)
📄 bad_getattr.py(61 B)
📄 bad_getattr2.py(77 B)
📄 bad_getattr3.py(139 B)
📄 badcert.pem(1.88 KB)
📄 badkey.pem(2.11 KB)
📄 badsyntax_3131.py(32 B)
📄 badsyntax_future10.py(95 B)
📄 badsyntax_future3.py(172 B)
📄 badsyntax_future4.py(153 B)
📄 badsyntax_future5.py(184 B)
📄 badsyntax_future6.py(161 B)
📄 badsyntax_future7.py(196 B)
📄 badsyntax_future8.py(122 B)
📄 badsyntax_future9.py(142 B)
📄 badsyntax_pep3120.py(14 B)
📄 bisect_cmd.py(4.85 KB)
📄 bytecode_helper.py(1.56 KB)
📁 capath
📄 cfgparser.1(67 B)
📄 cfgparser.2(19.02 KB)
📄 cfgparser.3(1.55 KB)
📁 cjkencodings
📄 clinic.test(94.65 KB)
📄 cmath_testcases.txt(141.05 KB)
📄 coding20731.py(22 B)
📄 curses_tests.py(1.22 KB)
📁 data
📄 dataclass_module_1.py(837 B)
📄 dataclass_module_1_str.py(835 B)
📄 dataclass_module_2.py(756 B)
📄 dataclass_module_2_str.py(754 B)
📄 dataclass_textanno.py(126 B)
📄 datetimetester.py(239.84 KB)
📁 decimaltestdata
📄 dis_module.py(76 B)
📄 doctest_aliases.py(240 B)
📄 double_const.py(1.18 KB)
📁 dtracedata
📁 eintrdata
📄 empty.vbs(70 B)
📁 encoded_modules
📄 exception_hierarchy.txt(1.78 KB)
📄 ffdh3072.pem(2.16 KB)
📄 final_a.py(411 B)
📄 final_b.py(411 B)
📄 floating_points.txt(15.92 KB)
📄 fork_wait.py(2.53 KB)
📄 formatfloat_testcases.txt(7.45 KB)
📄 future_test1.py(229 B)
📄 future_test2.py(149 B)
📄 gdb_sample.py(153 B)
📄 good_getattr.py(198 B)
📄 idnsans.pem(9.71 KB)
📄 ieee754.txt(3.21 KB)
📁 imghdrdata
📄 imp_dummy.py(63 B)
📄 inspect_fodder.py(1.88 KB)
📄 inspect_fodder2.py(2.06 KB)
📄 keycert.passwd.pem(4.13 KB)
📄 keycert.pem(3.96 KB)
📄 keycert2.pem(3.98 KB)
📄 keycert3.pem(9.23 KB)
📄 keycert4.pem(9.24 KB)
📄 keycertecc.pem(5.5 KB)
📁 libregrtest
📄 list_tests.py(16.54 KB)
📄 lock_tests.py(28.26 KB)
📄 mailcap.txt(1.24 KB)
📄 make_ssl_certs.py(9.25 KB)
📄 mapping_tests.py(21.75 KB)
📄 math_testcases.txt(23.19 KB)
📄 memory_watchdog.py(859 B)
📄 mime.types(47.37 KB)
📄 mock_socket.py(3.53 KB)
📄 mod_generics_cache.py(1.13 KB)
📄 mp_fork_bomb.py(448 B)
📄 mp_preload.py(351 B)
📄 multibytecodec_support.py(14.17 KB)
📄 nokia.pem(1.88 KB)
📄 nosan.pem(7.54 KB)
📄 nullbytecert.pem(5.31 KB)
📄 nullcert.pem(0 B)
📄 outstanding_bugs.py(370 B)
📄 pickletester.py(135.99 KB)
📄 profilee.py(2.97 KB)
📄 pstats.pck(65.05 KB)
📄 pycacert.pem(5.53 KB)
📄 pycakey.pem(2.43 KB)
📄 pyclbr_input.py(648 B)
📄 pydoc_mod.py(713 B)
📄 pydocfodder.py(6.18 KB)
📄 pythoninfo.py(20.34 KB)
📄 randv2_32.pck(7.34 KB)
📄 randv2_64.pck(7.19 KB)
📄 randv3.pck(7.82 KB)
📄 re_tests.py(25.93 KB)
📄 recursion.tar(516 B)
📄 regrtest.py(1.34 KB)
📄 relimport.py(27 B)
📄 reperf.py(538 B)
📄 revocation.crl(800 B)
📄 sample_doctest.py(1.02 KB)
📄 sample_doctest_no_docstrings.py(227 B)
📄 sample_doctest_no_doctests.py(269 B)
📄 secp384r1.pem(256 B)
📄 selfsigned_pythontestdotnet.pem(2.08 KB)
📄 seq_tests.py(14.18 KB)
📄 sgml_input.html(8.1 KB)
📄 signalinterproctester.py(2.7 KB)
📁 sndhdrdata
📄 sortperf.py(4.69 KB)
📄 ssl_cert.pem(1.53 KB)
📄 ssl_key.passwd.pem(2.59 KB)
📄 ssl_key.pem(2.43 KB)
📄 ssl_servers.py(7.04 KB)
📄 ssltests.py(1.03 KB)
📄 string_tests.py(64.65 KB)
📁 subprocessdata
📁 support
📄 talos-2019-0758.pem(1.3 KB)
📄 test___all__.py(4.12 KB)
📄 test___future__.py(2.36 KB)
📄 test__locale.py(7.83 KB)
📄 test__opcode.py(3.03 KB)
📄 test__osx_support.py(13.66 KB)
📄 test__xxsubinterpreters.py(68.7 KB)
📄 test_abc.py(18 KB)
📄 test_abstract_numbers.py(1.49 KB)
📄 test_aifc.py(17.68 KB)
📄 test_argparse.py(172.67 KB)
📄 test_array.py(52.57 KB)
📄 test_asdl_parser.py(4.15 KB)
📄 test_ast.py(88.53 KB)
📄 test_asyncgen.py(31.44 KB)
📄 test_asynchat.py(9.28 KB)
📁 test_asyncio
📄 test_asyncore.py(25.81 KB)
📄 test_atexit.py(5.81 KB)
📄 test_audioop.py(28.24 KB)
📄 test_audit.py(4.05 KB)
📄 test_augassign.py(7.68 KB)
📄 test_base64.py(30.17 KB)
📄 test_baseexception.py(6.86 KB)
📄 test_bdb.py(41.55 KB)
📄 test_bigaddrspace.py(2.92 KB)
📄 test_bigmem.py(44.88 KB)
📄 test_binascii.py(18 KB)
📄 test_binhex.py(1.79 KB)
📄 test_binop.py(14.14 KB)
📄 test_bisect.py(13.63 KB)
📄 test_bool.py(12.48 KB)
📄 test_buffer.py(160.04 KB)
📄 test_bufio.py(2.54 KB)
📄 test_builtin.py(78.38 KB)
📄 test_bytes.py(72.23 KB)
📄 test_bz2.py(36.76 KB)
📄 test_c_locale_coercion.py(18.82 KB)
📄 test_calendar.py(48.71 KB)
📄 test_call.py(20.88 KB)
📄 test_capi.py(30.46 KB)
📄 test_cgi.py(22.15 KB)
📄 test_cgitb.py(2.5 KB)
📄 test_charmapcodec.py(1.68 KB)
📄 test_class.py(17.42 KB)
📄 test_clinic.py(21.71 KB)
📄 test_cmath.py(24.07 KB)
📄 test_cmd.py(6.1 KB)
📄 test_cmd_line.py(33.72 KB)
📄 test_cmd_line_script.py(31.46 KB)
📄 test_code.py(13.66 KB)
📄 test_code_module.py(5.51 KB)
📄 test_codeccallbacks.py(40.97 KB)
📄 test_codecencodings_cn.py(3.86 KB)
📄 test_codecencodings_hk.py(701 B)
📄 test_codecencodings_iso2022.py(1.36 KB)
📄 test_codecencodings_jp.py(4.79 KB)
📄 test_codecencodings_kr.py(2.96 KB)
📄 test_codecencodings_tw.py(681 B)
📄 test_codecmaps_cn.py(746 B)
📄 test_codecmaps_hk.py(386 B)
📄 test_codecmaps_jp.py(1.7 KB)
📄 test_codecmaps_kr.py(1.16 KB)
📄 test_codecmaps_tw.py(705 B)
📄 test_codecs.py(129.38 KB)
📄 test_codeop.py(7.97 KB)
📄 test_collections.py(83.93 KB)
📄 test_colorsys.py(3.83 KB)
📄 test_compare.py(3.82 KB)
📄 test_compile.py(36.48 KB)
📄 test_compileall.py(26.7 KB)
📄 test_complex.py(30.24 KB)
📄 test_concurrent_futures.py(44.93 KB)
📄 test_configparser.py(84.93 KB)
📄 test_contains.py(3.49 KB)
📄 test_context.py(29.33 KB)
📄 test_contextlib.py(32.54 KB)
📄 test_contextlib_async.py(14.82 KB)
📄 test_copy.py(25.81 KB)
📄 test_copyreg.py(4.39 KB)
📄 test_coroutines.py(62.52 KB)
📄 test_cprofile.py(6.33 KB)
📄 test_crashers.py(1.17 KB)
📄 test_crypt.py(3.97 KB)
📄 test_csv.py(47.77 KB)
📄 test_ctypes.py(184 B)
📄 test_curses.py(45.47 KB)
📄 test_dataclasses.py(108.8 KB)
📄 test_datetime.py(2.15 KB)
📄 test_dbm.py(6.45 KB)
📄 test_dbm_dumb.py(10.61 KB)
📄 test_dbm_gnu.py(6.22 KB)
📄 test_dbm_ndbm.py(5.05 KB)
📄 test_decimal.py(206.63 KB)
📄 test_decorators.py(9.48 KB)
📄 test_defaultdict.py(5.88 KB)
📄 test_deque.py(34.46 KB)
📄 test_descr.py(190.58 KB)
📄 test_descrtut.py(11.53 KB)
📄 test_devpoll.py(4.5 KB)
📄 test_dict.py(45 KB)
📄 test_dict_version.py(5.88 KB)
📄 test_dictcomps.py(4.42 KB)
📄 test_dictviews.py(11.68 KB)
📄 test_difflib.py(19.64 KB)
📄 test_difflib_expect.html(100.85 KB)
📄 test_dis.py(48.4 KB)
📄 test_distutils.py(375 B)
📄 test_doctest.py(98.67 KB)
📄 test_doctest.txt(300 B)
📄 test_doctest2.py(2.3 KB)
📄 test_doctest2.txt(392 B)
📄 test_doctest3.txt(82 B)
📄 test_doctest4.txt(244 B)
📄 test_docxmlrpc.py(8.67 KB)
📄 test_dtrace.py(5.23 KB)
📄 test_dummy_thread.py(9.69 KB)
📄 test_dummy_threading.py(1.7 KB)
📄 test_dynamic.py(4.29 KB)
📄 test_dynamicclassattribute.py(9.57 KB)
📄 test_eintr.py(1.32 KB)
📁 test_email
📄 test_embed.py(49.23 KB)
📄 test_ensurepip.py(9.83 KB)
📄 test_enum.py(113.68 KB)
📄 test_enumerate.py(8.46 KB)
📄 test_eof.py(1.94 KB)
📄 test_epoll.py(9.03 KB)
📄 test_errno.py(1.04 KB)
📄 test_exception_hierarchy.py(7.43 KB)
📄 test_exception_variations.py(3.86 KB)
📄 test_exceptions.py(49.81 KB)
📄 test_extcall.py(13.49 KB)
📄 test_faulthandler.py(28.13 KB)
📄 test_fcntl.py(6.21 KB)
📄 test_file.py(11.02 KB)
📄 test_file_eintr.py(10.6 KB)
📄 test_filecmp.py(8.69 KB)
📄 test_fileinput.py(37.33 KB)
📄 test_fileio.py(19.96 KB)
📄 test_finalization.py(14.66 KB)
📄 test_float.py(63.41 KB)
📄 test_flufl.py(1.32 KB)
📄 test_fnmatch.py(5.07 KB)
📄 test_fork1.py(3.67 KB)
📄 test_format.py(22.58 KB)
📄 test_fractions.py(29.83 KB)
📄 test_frame.py(5.67 KB)
📄 test_frozen.py(943 B)
📄 test_fstring.py(46.16 KB)
📄 test_ftplib.py(39.71 KB)
📄 test_funcattrs.py(13.54 KB)
📄 test_functools.py(90.59 KB)
📄 test_future.py(11.9 KB)
📄 test_future3.py(490 B)
📄 test_future4.py(222 B)
📄 test_future5.py(510 B)
📄 test_gc.py(40.49 KB)
📄 test_gdb.py(40.88 KB)
📄 test_generator_stop.py(943 B)
📄 test_generators.py(58.51 KB)
📄 test_genericclass.py(9.28 KB)
📄 test_genericpath.py(21.7 KB)
📄 test_genexps.py(7.12 KB)
📄 test_getargs2.py(50 KB)
📄 test_getopt.py(6.75 KB)
📄 test_getpass.py(6.29 KB)
📄 test_gettext.py(41.38 KB)
📄 test_glob.py(13.03 KB)
📄 test_global.py(1.31 KB)
📄 test_grammar.py(57.5 KB)
📄 test_grp.py(3.54 KB)
📄 test_gzip.py(29.9 KB)
📄 test_hash.py(11.45 KB)
📄 test_hashlib.py(39.43 KB)
📄 test_heapq.py(16.4 KB)
📄 test_hmac.py(22.24 KB)
📄 test_html.py(4.23 KB)
📄 test_htmlparser.py(33.19 KB)
📄 test_http_cookiejar.py(78.36 KB)
📄 test_http_cookies.py(18.71 KB)
📄 test_httplib.py(76.98 KB)
📄 test_httpservers.py(45.24 KB)
📄 test_idle.py(825 B)
📄 test_imaplib.py(38.95 KB)
📄 test_imghdr.py(4.66 KB)
📄 test_imp.py(17.73 KB)
📁 test_import
📁 test_importlib
📄 test_index.py(8.37 KB)
📄 test_inspect.py(151.79 KB)
📄 test_int.py(20.8 KB)
📄 test_int_literal.py(6.89 KB)
📄 test_io.py(163.94 KB)
📄 test_ioctl.py(3.2 KB)
📄 test_ipaddress.py(90.98 KB)
📄 test_isinstance.py(10.25 KB)
📄 test_iter.py(31.81 KB)
📄 test_iterlen.py(7.1 KB)
📄 test_itertools.py(101.41 KB)
📁 test_json
📄 test_keyword.py(1.23 KB)
📄 test_keywordonlyarg.py(6.85 KB)
📄 test_kqueue.py(8.76 KB)
📄 test_largefile.py(6.83 KB)
📄 test_lib2to3.py(101 B)
📄 test_linecache.py(7.79 KB)
📄 test_list.py(7.4 KB)
📄 test_listcomps.py(3.76 KB)
📄 test_lltrace.py(1012 B)
📄 test_locale.py(23.87 KB)
📄 test_logging.py(182.43 KB)
📄 test_long.py(53.21 KB)
📄 test_longexp.py(233 B)
📄 test_lzma.py(87.92 KB)
📄 test_mailbox.py(91.92 KB)
📄 test_mailcap.py(9.88 KB)
📄 test_marshal.py(20.57 KB)
📄 test_math.py(82.18 KB)
📄 test_memoryio.py(31.48 KB)
📄 test_memoryview.py(17.78 KB)
📄 test_metaclass.py(6.2 KB)
📄 test_mimetypes.py(12.14 KB)
📄 test_minidom.py(66.95 KB)
📄 test_mmap.py(29.04 KB)
📄 test_module.py(10.3 KB)
📄 test_modulefinder.py(12.2 KB)
📄 test_msilib.py(5.06 KB)
📄 test_multibytecodec.py(15.04 KB)
📄 test_multiprocessing_fork.py(477 B)
📄 test_multiprocessing_forkserver.py(392 B)
📄 test_multiprocessing_main_handling.py(11.45 KB)
📄 test_multiprocessing_spawn.py(277 B)
📄 test_named_expressions.py(16.51 KB)
📄 test_netrc.py(5.96 KB)
📄 test_nis.py(1.13 KB)
📄 test_nntplib.py(61.7 KB)
📄 test_normalization.py(3.66 KB)
📄 test_ntpath.py(35.08 KB)
📄 test_numeric_tower.py(7.18 KB)
📄 test_opcodes.py(3.61 KB)
📄 test_openpty.py(600 B)
📄 test_operator.py(23.54 KB)
📄 test_optparse.py(60.99 KB)
📄 test_ordered_dict.py(30.22 KB)
📄 test_os.py(150.53 KB)
📄 test_ossaudiodev.py(7.06 KB)
📄 test_osx_env.py(1.3 KB)
📄 test_parser.py(35.72 KB)
📄 test_pathlib.py(97.12 KB)
📄 test_pdb.py(55.36 KB)
📄 test_peepholer.py(19.41 KB)
📄 test_pickle.py(19.16 KB)
📄 test_picklebuffer.py(4.96 KB)
📄 test_pickletools.py(4.33 KB)
📄 test_pipes.py(6.59 KB)
📄 test_pkg.py(9.59 KB)
📄 test_pkgimport.py(2.67 KB)
📄 test_pkgutil.py(19.25 KB)
📄 test_platform.py(14.31 KB)
📄 test_plistlib.py(41.43 KB)
📄 test_poll.py(7.23 KB)
📄 test_popen.py(1.98 KB)
📄 test_poplib.py(16.97 KB)
📄 test_positional_only_arg.py(17.5 KB)
📄 test_posix.py(75.76 KB)
📄 test_posixpath.py(29.19 KB)
📄 test_pow.py(5.44 KB)
📄 test_pprint.py(43.85 KB)
📄 test_print.py(7.37 KB)
📄 test_profile.py(8.72 KB)
📄 test_property.py(8.77 KB)
📄 test_pstats.py(3.04 KB)
📄 test_pty.py(11.97 KB)
📄 test_pulldom.py(12.66 KB)
📄 test_pwd.py(4.17 KB)
📄 test_py_compile.py(10.78 KB)
📄 test_pyclbr.py(10 KB)
📄 test_pydoc.py(56.98 KB)
📄 test_pyexpat.py(26.54 KB)
📄 test_queue.py(20.36 KB)
📄 test_quopri.py(7.78 KB)
📄 test_raise.py(12.86 KB)
📄 test_random.py(45.59 KB)
📄 test_range.py(23.35 KB)
📄 test_re.py(106.41 KB)
📄 test_readline.py(12.95 KB)
📄 test_regrtest.py(46.36 KB)
📄 test_repl.py(3.96 KB)
📄 test_reprlib.py(15.12 KB)
📄 test_resource.py(7.02 KB)
📄 test_richcmp.py(11.91 KB)
📄 test_rlcompleter.py(6.3 KB)
📄 test_robotparser.py(10.69 KB)
📄 test_runpy.py(33.86 KB)
📄 test_sax.py(46.9 KB)
📄 test_sched.py(6.41 KB)
📄 test_scope.py(19.7 KB)
📄 test_script_helper.py(5.78 KB)
📄 test_secrets.py(4.28 KB)
📄 test_select.py(2.69 KB)
📄 test_selectors.py(17.79 KB)
📄 test_set.py(64.41 KB)
📄 test_setcomps.py(3.7 KB)
📄 test_shelve.py(6.24 KB)
📄 test_shlex.py(13.29 KB)
📄 test_shutil.py(101.55 KB)
📄 test_signal.py(46.62 KB)
📄 test_site.py(24.71 KB)
📄 test_slice.py(8.25 KB)
📄 test_smtpd.py(40.14 KB)
📄 test_smtplib.py(56.51 KB)
📄 test_smtpnet.py(2.87 KB)
📄 test_sndhdr.py(1.43 KB)
📄 test_socket.py(232.71 KB)
📄 test_socketserver.py(17.7 KB)
📄 test_sort.py(13.42 KB)
📄 test_source_encoding.py(7.89 KB)
📄 test_spwd.py(2.71 KB)
📄 test_sqlite.py(948 B)
📄 test_ssl.py(203.3 KB)
📄 test_startfile.py(1.29 KB)
📄 test_stat.py(8.3 KB)
📄 test_statistics.py(106.5 KB)
📄 test_strftime.py(7.54 KB)
📄 test_string.py(19.8 KB)
📄 test_string_literals.py(9.88 KB)
📄 test_stringprep.py(3.04 KB)
📄 test_strptime.py(34.42 KB)
📄 test_strtod.py(20.06 KB)
📄 test_struct.py(34.41 KB)
📄 test_structmembers.py(4.7 KB)
📄 test_structseq.py(3.87 KB)
📄 test_subclassinit.py(8.12 KB)
📄 test_subprocess.py(142.64 KB)
📄 test_sunau.py(6.07 KB)
📄 test_sundry.py(2.07 KB)
📄 test_super.py(9.6 KB)
📄 test_support.py(24.12 KB)
📄 test_symbol.py(2.06 KB)
📄 test_symtable.py(9.13 KB)
📄 test_syntax.py(25.75 KB)
📄 test_sys.py(55.24 KB)
📄 test_sys_setprofile.py(12.31 KB)
📄 test_sys_settrace.py(43.08 KB)
📄 test_sysconfig.py(17.01 KB)
📄 test_syslog.py(1.15 KB)
📄 test_tabnanny.py(13.44 KB)
📄 test_tarfile.py(98.31 KB)
📄 test_tcl.py(30.74 KB)
📄 test_telnetlib.py(12.7 KB)
📄 test_tempfile.py(52.57 KB)
📄 test_textwrap.py(38.84 KB)
📄 test_thread.py(8.41 KB)
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Editing: test_c_locale_coercion.py

# Tests the attempted automatic coercion of the C locale to a UTF-8 locale

import locale
import os
import subprocess
import sys
import sysconfig
import unittest
from collections import namedtuple

from test import support
from test.support.script_helper import run_python_until_end

# Set the list of ways we expect to be able to ask for the "C" locale
EXPECTED_C_LOCALE_EQUIVALENTS = ["C", "invalid.ascii"]

# Set our expectation for the default encoding used in the C locale
# for the filesystem encoding and the standard streams
EXPECTED_C_LOCALE_STREAM_ENCODING = "ascii"
EXPECTED_C_LOCALE_FS_ENCODING = "ascii"

# Set our expectation for the default locale used when none is specified
EXPECT_COERCION_IN_DEFAULT_LOCALE = True

TARGET_LOCALES = ["C.UTF-8", "C.utf8", "UTF-8"]

# Apply some platform dependent overrides
if sys.platform.startswith("linux"):
    if support.is_android:
        # Android defaults to using UTF-8 for all system interfaces
        EXPECTED_C_LOCALE_STREAM_ENCODING = "utf-8"
        EXPECTED_C_LOCALE_FS_ENCODING = "utf-8"
    else:
        # Linux distros typically alias the POSIX locale directly to the C
        # locale.
        # TODO: Once https://bugs.python.org/issue30672 is addressed, we'll be
        #       able to check this case unconditionally
        EXPECTED_C_LOCALE_EQUIVALENTS.append("POSIX")
elif sys.platform.startswith("aix"):
    # AIX uses iso8859-1 in the C locale, other *nix platforms use ASCII
    EXPECTED_C_LOCALE_STREAM_ENCODING = "iso8859-1"
    EXPECTED_C_LOCALE_FS_ENCODING = "iso8859-1"
elif sys.platform == "darwin":
    # FS encoding is UTF-8 on macOS
    EXPECTED_C_LOCALE_FS_ENCODING = "utf-8"
elif sys.platform == "cygwin":
    # Cygwin defaults to using C.UTF-8
    # TODO: Work out a robust dynamic test for this that doesn't rely on
    #       CPython's own locale handling machinery
    EXPECT_COERCION_IN_DEFAULT_LOCALE = False

# Note that the above expectations are still wrong in some cases, such as:
# * Windows when PYTHONLEGACYWINDOWSFSENCODING is set
# * Any platform other than AIX that uses latin-1 in the C locale
# * Any Linux distro where POSIX isn't a simple alias for the C locale
# * Any Linux distro where the default locale is something other than "C"
#
# Options for dealing with this:
# * Don't set the PY_COERCE_C_LOCALE preprocessor definition on
#   such platforms (e.g. it isn't set on Windows)
# * Fix the test expectations to match the actual platform behaviour

# In order to get the warning messages to match up as expected, the candidate
# order here must much the target locale order in Python/pylifecycle.c
_C_UTF8_LOCALES = ("C.UTF-8", "C.utf8", "UTF-8")

# There's no reliable cross-platform way of checking locale alias
# lists, so the only way of knowing which of these locales will work
# is to try them with locale.setlocale(). We do that in a subprocess
# in setUpModule() below to avoid altering the locale of the test runner.
#
# If the relevant locale module attributes exist, and we're not on a platform
# where we expect it to always succeed, we also check that
# `locale.nl_langinfo(locale.CODESET)` works, as if it fails, the interpreter
# will skip locale coercion for that particular target locale
_check_nl_langinfo_CODESET = bool(
    sys.platform not in ("darwin", "linux") and
    hasattr(locale, "nl_langinfo") and
    hasattr(locale, "CODESET")
)

def _set_locale_in_subprocess(locale_name):
    cmd_fmt = "import locale; print(locale.setlocale(locale.LC_CTYPE, '{}'))"
    if _check_nl_langinfo_CODESET:
        # If there's no valid CODESET, we expect coercion to be skipped
        cmd_fmt += "; import sys; sys.exit(not locale.nl_langinfo(locale.CODESET))"
    cmd = cmd_fmt.format(locale_name)
    result, py_cmd = run_python_until_end("-c", cmd, PYTHONCOERCECLOCALE='')
    return result.rc == 0

_fields = "fsencoding stdin_info stdout_info stderr_info lang lc_ctype lc_all"
_EncodingDetails = namedtuple("EncodingDetails", _fields)

class EncodingDetails(_EncodingDetails):
    # XXX (ncoghlan): Using JSON for child state reporting may be less fragile
    CHILD_PROCESS_SCRIPT = ";".join([
        "import sys, os",
        "print(sys.getfilesystemencoding())",
        "print(sys.stdin.encoding + ':' + sys.stdin.errors)",
        "print(sys.stdout.encoding + ':' + sys.stdout.errors)",
        "print(sys.stderr.encoding + ':' + sys.stderr.errors)",
        "print(os.environ.get('LANG', 'not set'))",
        "print(os.environ.get('LC_CTYPE', 'not set'))",
        "print(os.environ.get('LC_ALL', 'not set'))",
    ])

@classmethod
    def get_expected_details(cls, coercion_expected, fs_encoding, stream_encoding, env_vars):
        """Returns expected child process details for a given encoding"""
        _stream = stream_encoding + ":{}"
        # stdin and stdout should use surrogateescape either because the
        # coercion triggered, or because the C locale was detected
        stream_info = 2*[_stream.format("surrogateescape")]
        # stderr should always use backslashreplace
        stream_info.append(_stream.format("backslashreplace"))
        expected_lang = env_vars.get("LANG", "not set")
        if coercion_expected:
            expected_lc_ctype = CLI_COERCION_TARGET
        else:
            expected_lc_ctype = env_vars.get("LC_CTYPE", "not set")
        expected_lc_all = env_vars.get("LC_ALL", "not set")
        env_info = expected_lang, expected_lc_ctype, expected_lc_all
        return dict(cls(fs_encoding, *stream_info, *env_info)._asdict())

@classmethod
    def get_child_details(cls, env_vars):
        """Retrieves fsencoding and standard stream details from a child process

Returns (encoding_details, stderr_lines):

- encoding_details: EncodingDetails for eager decoding
        - stderr_lines: result of calling splitlines() on the stderr output

The child is run in isolated mode if the current interpreter supports
        that.
        """
        result, py_cmd = run_python_until_end(
            "-X", "utf8=0", "-c", cls.CHILD_PROCESS_SCRIPT,
            **env_vars
        )
        if not result.rc == 0:
            result.fail(py_cmd)
        # All subprocess outputs in this test case should be pure ASCII
        stdout_lines = result.out.decode("ascii").splitlines()
        child_encoding_details = dict(cls(*stdout_lines)._asdict())
        stderr_lines = result.err.decode("ascii").rstrip().splitlines()
        return child_encoding_details, stderr_lines

# Details of the shared library warning emitted at runtime
LEGACY_LOCALE_WARNING = (
    "Python runtime initialized with LC_CTYPE=C (a locale with default ASCII "
    "encoding), which may cause Unicode compatibility problems. Using C.UTF-8, "
    "C.utf8, or UTF-8 (if available) as alternative Unicode-compatible "
    "locales is recommended."
)

# Details of the CLI locale coercion warning emitted at runtime
CLI_COERCION_WARNING_FMT = (
    "Python detected LC_CTYPE=C: LC_CTYPE coerced to {} (set another locale "
    "or PYTHONCOERCECLOCALE=0 to disable this locale coercion behavior)."
)

AVAILABLE_TARGETS = None
CLI_COERCION_TARGET = None
CLI_COERCION_WARNING = None

def setUpModule():
    global AVAILABLE_TARGETS
    global CLI_COERCION_TARGET
    global CLI_COERCION_WARNING

if AVAILABLE_TARGETS is not None:
        # initialization already done
        return
    AVAILABLE_TARGETS = []

# Find the target locales available in the current system
    for target_locale in _C_UTF8_LOCALES:
        if _set_locale_in_subprocess(target_locale):
            AVAILABLE_TARGETS.append(target_locale)

if AVAILABLE_TARGETS:
        # Coercion is expected to use the first available target locale
        CLI_COERCION_TARGET = AVAILABLE_TARGETS[0]
        CLI_COERCION_WARNING = CLI_COERCION_WARNING_FMT.format(CLI_COERCION_TARGET)

if support.verbose:
        print(f"AVAILABLE_TARGETS = {AVAILABLE_TARGETS!r}")
        print(f"EXPECTED_C_LOCALE_EQUIVALENTS = {EXPECTED_C_LOCALE_EQUIVALENTS!r}")
        print(f"EXPECTED_C_LOCALE_STREAM_ENCODING = {EXPECTED_C_LOCALE_STREAM_ENCODING!r}")
        print(f"EXPECTED_C_LOCALE_FS_ENCODING = {EXPECTED_C_LOCALE_FS_ENCODING!r}")
        print(f"EXPECT_COERCION_IN_DEFAULT_LOCALE = {EXPECT_COERCION_IN_DEFAULT_LOCALE!r}")
        print(f"_C_UTF8_LOCALES = {_C_UTF8_LOCALES!r}")
        print(f"_check_nl_langinfo_CODESET = {_check_nl_langinfo_CODESET!r}")

class _LocaleHandlingTestCase(unittest.TestCase):
    # Base class to check expected locale handling behaviour

def _check_child_encoding_details(self,
                                      env_vars,
                                      expected_fs_encoding,
                                      expected_stream_encoding,
                                      expected_warnings,
                                      coercion_expected):
        """Check the C locale handling for the given process environment

Parameters:
            expected_fs_encoding: expected sys.getfilesystemencoding() result
            expected_stream_encoding: expected encoding for standard streams
            expected_warning: stderr output to expect (if any)
        """
        result = EncodingDetails.get_child_details(env_vars)
        encoding_details, stderr_lines = result
        expected_details = EncodingDetails.get_expected_details(
            coercion_expected,
            expected_fs_encoding,
            expected_stream_encoding,
            env_vars
        )
        self.assertEqual(encoding_details, expected_details)
        if expected_warnings is None:
            expected_warnings = []
        self.assertEqual(stderr_lines, expected_warnings)

class LocaleConfigurationTests(_LocaleHandlingTestCase):
    # Test explicit external configuration via the process environment

@classmethod
    def setUpClass(cls):
        # This relies on setUpModule() having been run, so it can't be
        # handled via the @unittest.skipUnless decorator
        if not AVAILABLE_TARGETS:
            raise unittest.SkipTest("No C-with-UTF-8 locale available")

def test_external_target_locale_configuration(self):

# Explicitly setting a target locale should give the same behaviour as
        # is seen when implicitly coercing to that target locale
        self.maxDiff = None

expected_fs_encoding = "utf-8"
        expected_stream_encoding = "utf-8"

base_var_dict = {
            "LANG": "",
            "LC_CTYPE": "",
            "LC_ALL": "",
            "PYTHONCOERCECLOCALE": "",
        }
        for env_var in ("LANG", "LC_CTYPE"):
            for locale_to_set in AVAILABLE_TARGETS:
                # XXX (ncoghlan): LANG=UTF-8 doesn't appear to work as
                #                 expected, so skip that combination for now
                # See https://bugs.python.org/issue30672 for discussion
                if env_var == "LANG" and locale_to_set == "UTF-8":
                    continue

with self.subTest(env_var=env_var,
                                  configured_locale=locale_to_set):
                    var_dict = base_var_dict.copy()
                    var_dict[env_var] = locale_to_set
                    self._check_child_encoding_details(var_dict,
                                                       expected_fs_encoding,
                                                       expected_stream_encoding,
                                                       expected_warnings=None,
                                                       coercion_expected=False)

@support.cpython_only
@unittest.skipUnless(sysconfig.get_config_var("PY_COERCE_C_LOCALE"),
                     "C locale coercion disabled at build time")
class LocaleCoercionTests(_LocaleHandlingTestCase):
    # Test implicit reconfiguration of the environment during CLI startup

def _check_c_locale_coercion(self,
                                 fs_encoding, stream_encoding,
                                 coerce_c_locale,
                                 expected_warnings=None,
                                 coercion_expected=True,
                                 **extra_vars):
        """Check the C locale handling for various configurations

Parameters:
            fs_encoding: expected sys.getfilesystemencoding() result
            stream_encoding: expected encoding for standard streams
            coerce_c_locale: setting to use for PYTHONCOERCECLOCALE
              None: don't set the variable at all
              str: the value set in the child's environment
            expected_warnings: expected warning lines on stderr
            extra_vars: additional environment variables to set in subprocess
        """
        self.maxDiff = None

if not AVAILABLE_TARGETS:
            # Locale coercion is disabled when there aren't any target locales
            fs_encoding = EXPECTED_C_LOCALE_FS_ENCODING
            stream_encoding = EXPECTED_C_LOCALE_STREAM_ENCODING
            coercion_expected = False
            if expected_warnings:
                expected_warnings = [LEGACY_LOCALE_WARNING]

base_var_dict = {
            "LANG": "",
            "LC_CTYPE": "",
            "LC_ALL": "",
            "PYTHONCOERCECLOCALE": "",
        }
        base_var_dict.update(extra_vars)
        if coerce_c_locale is not None:
            base_var_dict["PYTHONCOERCECLOCALE"] = coerce_c_locale

# Check behaviour for the default locale
        with self.subTest(default_locale=True,
                          PYTHONCOERCECLOCALE=coerce_c_locale):
            if EXPECT_COERCION_IN_DEFAULT_LOCALE:
                _expected_warnings = expected_warnings
                _coercion_expected = coercion_expected
            else:
                _expected_warnings = None
                _coercion_expected = False
            # On Android CLI_COERCION_WARNING is not printed when all the
            # locale environment variables are undefined or empty. When
            # this code path is run with environ['LC_ALL'] == 'C', then
            # LEGACY_LOCALE_WARNING is printed.
            if (support.is_android and
                    _expected_warnings == [CLI_COERCION_WARNING]):
                _expected_warnings = None
            self._check_child_encoding_details(base_var_dict,
                                               fs_encoding,
                                               stream_encoding,
                                               _expected_warnings,
                                               _coercion_expected)

# Check behaviour for explicitly configured locales
        for locale_to_set in EXPECTED_C_LOCALE_EQUIVALENTS:
            for env_var in ("LANG", "LC_CTYPE"):
                with self.subTest(env_var=env_var,
                                  nominal_locale=locale_to_set,
                                  PYTHONCOERCECLOCALE=coerce_c_locale):
                    var_dict = base_var_dict.copy()
                    var_dict[env_var] = locale_to_set
                    # Check behaviour on successful coercion
                    self._check_child_encoding_details(var_dict,
                                                       fs_encoding,
                                                       stream_encoding,
                                                       expected_warnings,
                                                       coercion_expected)

def test_PYTHONCOERCECLOCALE_not_set(self):
        # This should coerce to the first available target locale by default
        self._check_c_locale_coercion("utf-8", "utf-8", coerce_c_locale=None)

def test_PYTHONCOERCECLOCALE_not_zero(self):
        # *Any* string other than "0" is considered "set" for our purposes
        # and hence should result in the locale coercion being enabled
        for setting in ("", "1", "true", "false"):
            self._check_c_locale_coercion("utf-8", "utf-8", coerce_c_locale=setting)

def test_PYTHONCOERCECLOCALE_set_to_warn(self):
        # PYTHONCOERCECLOCALE=warn enables runtime warnings for legacy locales
        self._check_c_locale_coercion("utf-8", "utf-8",
                                      coerce_c_locale="warn",
                                      expected_warnings=[CLI_COERCION_WARNING])

def test_PYTHONCOERCECLOCALE_set_to_zero(self):
        # The setting "0" should result in the locale coercion being disabled
        self._check_c_locale_coercion(EXPECTED_C_LOCALE_FS_ENCODING,
                                      EXPECTED_C_LOCALE_STREAM_ENCODING,
                                      coerce_c_locale="0",
                                      coercion_expected=False)
        # Setting LC_ALL=C shouldn't make any difference to the behaviour
        self._check_c_locale_coercion(EXPECTED_C_LOCALE_FS_ENCODING,
                                      EXPECTED_C_LOCALE_STREAM_ENCODING,
                                      coerce_c_locale="0",
                                      LC_ALL="C",
                                      coercion_expected=False)

def test_LC_ALL_set_to_C(self):
        # Setting LC_ALL should render the locale coercion ineffective
        self._check_c_locale_coercion(EXPECTED_C_LOCALE_FS_ENCODING,
                                      EXPECTED_C_LOCALE_STREAM_ENCODING,
                                      coerce_c_locale=None,
                                      LC_ALL="C",
                                      coercion_expected=False)
        # And result in a warning about a lack of locale compatibility
        self._check_c_locale_coercion(EXPECTED_C_LOCALE_FS_ENCODING,
                                      EXPECTED_C_LOCALE_STREAM_ENCODING,
                                      coerce_c_locale="warn",
                                      LC_ALL="C",
                                      expected_warnings=[LEGACY_LOCALE_WARNING],
                                      coercion_expected=False)

def test_PYTHONCOERCECLOCALE_set_to_one(self):
        # skip the test if the LC_CTYPE locale is C or coerced
        old_loc = locale.setlocale(locale.LC_CTYPE, None)
        self.addCleanup(locale.setlocale, locale.LC_CTYPE, old_loc)
        try:
            loc = locale.setlocale(locale.LC_CTYPE, "")
        except locale.Error as e:
            self.skipTest(str(e))
        if loc == "C":
            self.skipTest("test requires LC_CTYPE locale different than C")
        if loc in TARGET_LOCALES :
            self.skipTest("coerced LC_CTYPE locale: %s" % loc)

# bpo-35336: PYTHONCOERCECLOCALE=1 must not coerce the LC_CTYPE locale
        # if it's not equal to "C"
        code = 'import locale; print(locale.setlocale(locale.LC_CTYPE, None))'
        env = dict(os.environ, PYTHONCOERCECLOCALE='1')
        cmd = subprocess.run([sys.executable, '-c', code],
                             stdout=subprocess.PIPE,
                             env=env,
                             text=True)
        self.assertEqual(cmd.stdout.rstrip(), loc)

def test_main():
    support.run_unittest(
        LocaleConfigurationTests,
        LocaleCoercionTests
    )
    support.reap_children()

if __name__ == "__main__":
    test_main()

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