babel fails to build with Python 3.11a2 AttributeError: 'Translations' object has no attribute '_output_charset'

[FelixSchwarz]

initially filed by Tomáš Hrnčiar in rhbz #2026703:

    =================================== FAILURES ===================================
    _____________________ TranslationsTestCase.test_dnpgettext _____________________
    
    self = <tests.test_support.TranslationsTestCase testMethod=test_dnpgettext>
    
        def test_dnpgettext(self):
            self.assertEqualTypeToo(
                'VohD1', self.translations.dngettext('messages1', 'foo1', 'foos1', 1))
            self.assertEqualTypeToo(
                'VohsD1', self.translations.dngettext('messages1', 'foo1', 'foos1', 2))
            self.assertEqualTypeToo(
    >           'VohCTXD1', self.translations.dnpgettext('messages1', 'foo', 'foo1',
                                                         'foos1', 1))
    
    tests/test_support.py:149: 
    _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
    babel/support.py:508: in dnpgettext
        return self._domains.get(domain, self).npgettext(context, singular,
    _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
    
    self = <Translations: "PROJECT VERSION">, context = 'foo', singular = 'foo1'
    plural = 'foos1', num = 1
    
        def npgettext(self, context, singular, plural, num):
            """Do a plural-forms lookup of a message id.  `singular` is used as the
            message id for purposes of lookup in the catalog, while `num` is used to
            determine which plural form to use.  The returned message string is an
            8-bit string encoded with the catalog's charset encoding, if known.
        
            If the message id for `context` is not found in the catalog, and a
            fallback is specified, the request is forwarded to the fallback's
            ``npgettext()`` method.  Otherwise, when ``num`` is 1 ``singular`` is
            returned, and ``plural`` is returned in all other cases.
            """
            ctxt_msg_id = self.CONTEXT_ENCODING % (context, singular)
            try:
                tmsg = self._catalog[(ctxt_msg_id, self.plural(num))]
    >           if self._output_charset:
    E           AttributeError: 'Translations' object has no attribute '_output_charset'
    
    babel/support.py:412: AttributeError
    _____________________ TranslationsTestCase.test_dpgettext ______________________
    
    self = <tests.test_support.TranslationsTestCase testMethod=test_dpgettext>
    
        def test_dpgettext(self):
            self.assertEqualTypeToo(
                'VohD', self.translations.dgettext('messages1', 'foo'))
            self.assertEqualTypeToo(
    >           'VohCTXD', self.translations.dpgettext('messages1', 'foo', 'foo'))
    
    tests/test_support.py:128: 
    _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
    babel/support.py:487: in dpgettext
        return self._domains.get(domain, self).pgettext(context, message)
    _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
    
    self = <Translations: "PROJECT VERSION">, context = 'foo', message = 'foo'
    
        def pgettext(self, context, message):
            """Look up the `context` and `message` id in the catalog and return the
            corresponding message string, as an 8-bit string encoded with the
            catalog's charset encoding, if known.  If there is no entry in the
            catalog for the `message` id and `context` , and a fallback has been
            set, the look up is forwarded to the fallback's ``pgettext()``
            method. Otherwise, the `message` id is returned.
            """
            ctxt_msg_id = self.CONTEXT_ENCODING % (context, message)
            missing = object()
            tmsg = self._catalog.get(ctxt_msg_id, missing)
            if tmsg is missing:
                if self._fallback:
                    return self._fallback.pgettext(context, message)
                return message
            # Encode the Unicode tmsg back to an 8-bit string, if possible
    >       if self._output_charset:
    E       AttributeError: 'Translations' object has no attribute '_output_charset'
    
    babel/support.py:376: AttributeError
    _____________________ TranslationsTestCase.test_npgettext ______________________
    
    self = <tests.test_support.TranslationsTestCase testMethod=test_npgettext>
    
        def test_npgettext(self):
            self.assertEqualTypeToo('Voh1',
                                    self.translations.ngettext('foo1', 'foos1', 1))
            self.assertEqualTypeToo('Vohs1',
                                    self.translations.ngettext('foo1', 'foos1', 2))
            self.assertEqualTypeToo('VohCTX1',
    >                               self.translations.npgettext('foo', 'foo1',
                                                                'foos1', 1))
    
    tests/test_support.py:93: 
    _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
    
    self = <Translations: "PROJECT VERSION">, context = 'foo', singular = 'foo1'
    plural = 'foos1', num = 1
    
        def npgettext(self, context, singular, plural, num):
            """Do a plural-forms lookup of a message id.  `singular` is used as the
            message id for purposes of lookup in the catalog, while `num` is used to
            determine which plural form to use.  The returned message string is an
            8-bit string encoded with the catalog's charset encoding, if known.
        
            If the message id for `context` is not found in the catalog, and a
            fallback is specified, the request is forwarded to the fallback's
            ``npgettext()`` method.  Otherwise, when ``num`` is 1 ``singular`` is
            returned, and ``plural`` is returned in all other cases.
            """
            ctxt_msg_id = self.CONTEXT_ENCODING % (context, singular)
            try:
                tmsg = self._catalog[(ctxt_msg_id, self.plural(num))]
    >           if self._output_charset:
    E           AttributeError: 'Translations' object has no attribute '_output_charset'
    
    babel/support.py:412: AttributeError
    ______________________ TranslationsTestCase.test_pgettext ______________________
    
    self = <tests.test_support.TranslationsTestCase testMethod=test_pgettext>
    
        def test_pgettext(self):
            self.assertEqualTypeToo('Voh', self.translations.gettext('foo'))
    >       self.assertEqualTypeToo('VohCTX', self.translations.pgettext('foo',
                                                                         'foo'))
    
    tests/test_support.py:73: 
    _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
    
    self = <Translations: "PROJECT VERSION">, context = 'foo', message = 'foo'
    
        def pgettext(self, context, message):
            """Look up the `context` and `message` id in the catalog and return the
            corresponding message string, as an 8-bit string encoded with the
            catalog's charset encoding, if known.  If there is no entry in the
            catalog for the `message` id and `context` , and a fallback has been
            set, the look up is forwarded to the fallback's ``pgettext()``
            method. Otherwise, the `message` id is returned.
            """
            ctxt_msg_id = self.CONTEXT_ENCODING % (context, message)
            missing = object()
            tmsg = self._catalog.get(ctxt_msg_id, missing)
            if tmsg is missing:
                if self._fallback:
                    return self._fallback.pgettext(context, message)
                return message
            # Encode the Unicode tmsg back to an 8-bit string, if possible
    >       if self._output_charset:
    E       AttributeError: 'Translations' object has no attribute '_output_charset'
    
    babel/support.py:376: AttributeError
    =============================== warnings summary ===============================
    babel/messages/frontend.py:33
      /builddir/build/BUILD/Babel-2.9.1/babel/messages/frontend.py:33: DeprecationWarning: The distutils package is deprecated and slated for removal in Python 3.12. Use setuptools or check PEP 632 for potential alternatives
        from distutils import log as distutils_log
    
    babel/numbers.py::babel.numbers.format_number
    babel/numbers.py::babel.numbers.format_number
    babel/support.py::babel.support.Format.number
    tests/test_numbers.py::test_format_number
    tests/test_numbers.py::test_format_number
    tests/test_support.py::test_format_number
      /builddir/build/BUILD/Babel-2.9.1/babel/numbers.py:352: DeprecationWarning: Use babel.numbers.format_decimal() instead.
        warnings.warn('Use babel.numbers.format_decimal() instead.', DeprecationWarning)
    
    -- Docs: https://docs.pytest.org/en/stable/warnings.html
    =========================== short test summary info ============================
    FAILED tests/test_support.py::TranslationsTestCase::test_dnpgettext - Attribu...
    FAILED tests/test_support.py::TranslationsTestCase::test_dpgettext - Attribut...
    FAILED tests/test_support.py::TranslationsTestCase::test_npgettext - Attribut...
    FAILED tests/test_support.py::TranslationsTestCase::test_pgettext - Attribute...
    ============ 4 failed, 3127 passed, 5 skipped, 7 warnings in 5.62s =============

The following deprecated functions and methods are removed in the gettext module: lgettext(), ldgettext(), lngettext() and ldngettext().

Function bind_textdomain_codeset(), methods output_charset() and set_output_charset(), and the codeset parameter of functions translation() and install() are also removed, since they are only used for the l*gettext() functions. (Contributed by Dong-hee Na and Serhiy Storchaka in bpo-44235.)

https://bugs.python.org/issue44235
https://docs.python.org/3.11/whatsnew/3.11.html

[akx]

Thanks for the heads-up!

This would be fixed by #835. Could you take a look, @FelixSchwarz?