bpo-33710: Deprecate l*gettext() and related functions in the gettext module. (GH-10139)
They return encoded bytes and are Python 2 artifacts.
This commit is contained in:
Serhiy Storchaka
GitHub
parent
d9bff4e81b
commit
fec35c99aa
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@ -53,6 +53,8 @@ class-based API instead.
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and :func:`ldngettext` functions.
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If *codeset* is omitted, then the current binding is returned.
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.. deprecated-removed:: 3.8 3.10
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.. function:: textdomain(domain=None)
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@ -112,9 +114,9 @@ class-based API instead.
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Unicode strings instead, since most Python applications will want to
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manipulate human readable text as strings instead of bytes. Further,
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it's possible that you may get unexpected Unicode-related exceptions
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if there are encoding problems with the translated strings. It is
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possible that the ``l*()`` functions will be deprecated in future Python
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versions due to their inherent problems and limitations.
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if there are encoding problems with the translated strings.
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.. deprecated-removed:: 3.8 3.10
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Note that GNU :program:`gettext` also defines a :func:`dcgettext` method, but
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@ -192,6 +194,9 @@ class can also install themselves in the built-in namespace as the function
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.. versionchanged:: 3.3
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:exc:`IOError` used to be raised instead of :exc:`OSError`.
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.. deprecated-removed:: 3.8 3.10
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The *codeset* parameter.
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.. function:: install(domain, localedir=None, codeset=None, names=None)
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@ -212,6 +217,9 @@ class can also install themselves in the built-in namespace as the function
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builtins namespace, so it is easily accessible in all modules of your
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application.
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.. deprecated-removed:: 3.8 3.10
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The *codeset* parameter.
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The :class:`NullTranslations` class
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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@ -272,6 +280,8 @@ are the methods of :class:`!NullTranslations`:
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These methods should be avoided in Python 3. See the warning for the
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:func:`lgettext` function.
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.. deprecated-removed:: 3.8 3.10
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.. method:: info()
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@ -288,11 +298,15 @@ are the methods of :class:`!NullTranslations`:
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Return the encoding used to return translated messages in :meth:`.lgettext`
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and :meth:`.lngettext`.
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.. deprecated-removed:: 3.8 3.10
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.. method:: set_output_charset(charset)
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Change the encoding used to return translated messages.
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.. deprecated-removed:: 3.8 3.10
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.. method:: install(names=None)
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@ -393,6 +407,8 @@ unexpected, or if other problems occur while reading the file, instantiating a
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These methods should be avoided in Python 3. See the warning for the
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:func:`lgettext` function.
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.. deprecated-removed:: 3.8 3.10
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Solaris message catalog support
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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@ -295,6 +295,23 @@ Deprecated
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versions. :class:`~ast.Constant` should be used instead.
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(Contributed by Serhiy Storchaka in :issue:`32892`.)
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* The following functions and methods are deprecated in the :mod:`gettext`
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module: :func:`~gettext.lgettext`, :func:`~gettext.ldgettext`,
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:func:`~gettext.lngettext` and :func:`~gettext.ldngettext`.
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They return encoded bytes, and it's possible that you will get unexpected
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Unicode-related exceptions if there are encoding problems with the
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translated strings. It's much better to use alternatives which return
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Unicode strings in Python 3. These functions have been broken for a long time.
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Function :func:`~gettext.bind_textdomain_codeset`, methods
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:meth:`~gettext.NullTranslations.output_charset` and
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:meth:`~gettext.NullTranslations.set_output_charset`, and the *codeset*
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parameter of functions :func:`~gettext.translation` and
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:func:`~gettext.install` are also deprecated, since they are only used for
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for the ``l*gettext()`` functions.
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(Contributed by Serhiy Storchaka in :issue:`33710`.)
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Removed
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=======
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@ -274,7 +274,13 @@ class NullTranslations:
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return message
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def lgettext(self, message):
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import warnings
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warnings.warn('lgettext() is deprecated, use gettext() instead',
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DeprecationWarning, 2)
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if self._fallback:
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with warnings.catch_warnings():
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warnings.filterwarnings('ignore', r'.*\blgettext\b.*',
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DeprecationWarning)
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return self._fallback.lgettext(message)
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if self._output_charset:
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return message.encode(self._output_charset)
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@ -289,7 +295,13 @@ class NullTranslations:
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return msgid2
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def lngettext(self, msgid1, msgid2, n):
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import warnings
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warnings.warn('lngettext() is deprecated, use ngettext() instead',
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DeprecationWarning, 2)
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if self._fallback:
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with warnings.catch_warnings():
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warnings.filterwarnings('ignore', r'.*\blngettext\b.*',
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DeprecationWarning)
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return self._fallback.lngettext(msgid1, msgid2, n)
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if n == 1:
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tmsg = msgid1
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@ -306,9 +318,15 @@ class NullTranslations:
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return self._charset
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def output_charset(self):
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import warnings
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warnings.warn('output_charset() is deprecated',
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DeprecationWarning, 2)
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return self._output_charset
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def set_output_charset(self, charset):
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import warnings
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warnings.warn('set_output_charset() is deprecated',
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DeprecationWarning, 2)
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self._output_charset = charset
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def install(self, names=None):
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@ -424,6 +442,9 @@ class GNUTranslations(NullTranslations):
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transidx += 8
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def lgettext(self, message):
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import warnings
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warnings.warn('lgettext() is deprecated, use gettext() instead',
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DeprecationWarning, 2)
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missing = object()
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tmsg = self._catalog.get(message, missing)
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if tmsg is missing:
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@ -435,6 +456,9 @@ class GNUTranslations(NullTranslations):
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return tmsg.encode(locale.getpreferredencoding())
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def lngettext(self, msgid1, msgid2, n):
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import warnings
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warnings.warn('lngettext() is deprecated, use ngettext() instead',
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DeprecationWarning, 2)
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try:
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tmsg = self._catalog[(msgid1, self.plural(n))]
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except KeyError:
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@ -510,9 +534,10 @@ def find(domain, localedir=None, languages=None, all=False):
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# a mapping between absolute .mo file path and Translation object
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_translations = {}
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_unspecified = ['unspecified']
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def translation(domain, localedir=None, languages=None,
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class_=None, fallback=False, codeset=None):
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class_=None, fallback=False, codeset=_unspecified):
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if class_ is None:
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class_ = GNUTranslations
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mofiles = find(domain, localedir, languages, all=True)
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@ -538,7 +563,14 @@ def translation(domain, localedir=None, languages=None,
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# are not used.
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import copy
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t = copy.copy(t)
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if codeset is not _unspecified:
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import warnings
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warnings.warn('parameter codeset is deprecated',
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DeprecationWarning, 2)
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if codeset:
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with warnings.catch_warnings():
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warnings.filterwarnings('ignore', r'.*\bset_output_charset\b.*',
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DeprecationWarning)
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t.set_output_charset(codeset)
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if result is None:
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result = t
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@ -547,7 +579,7 @@ def translation(domain, localedir=None, languages=None,
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return result
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def install(domain, localedir=None, codeset=None, names=None):
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def install(domain, localedir=None, codeset=_unspecified, names=None):
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t = translation(domain, localedir, fallback=True, codeset=codeset)
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t.install(names)
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@ -576,6 +608,9 @@ def bindtextdomain(domain, localedir=None):
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def bind_textdomain_codeset(domain, codeset=None):
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import warnings
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warnings.warn('bind_textdomain_codeset() is deprecated',
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DeprecationWarning, 2)
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global _localecodesets
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if codeset is not None:
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_localecodesets[domain] = codeset
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@ -584,24 +619,31 @@ def bind_textdomain_codeset(domain, codeset=None):
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def dgettext(domain, message):
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try:
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t = translation(domain, _localedirs.get(domain, None),
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codeset=_localecodesets.get(domain))
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t = translation(domain, _localedirs.get(domain, None))
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except OSError:
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return message
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return t.gettext(message)
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def ldgettext(domain, message):
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import warnings
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warnings.warn('ldgettext() is deprecated, use dgettext() instead',
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DeprecationWarning, 2)
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codeset = _localecodesets.get(domain)
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try:
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with warnings.catch_warnings():
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warnings.filterwarnings('ignore', r'.*\bparameter codeset\b.*',
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DeprecationWarning)
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t = translation(domain, _localedirs.get(domain, None), codeset=codeset)
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except OSError:
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return message.encode(codeset or locale.getpreferredencoding())
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with warnings.catch_warnings():
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warnings.filterwarnings('ignore', r'.*\blgettext\b.*',
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DeprecationWarning)
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return t.lgettext(message)
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def dngettext(domain, msgid1, msgid2, n):
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try:
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t = translation(domain, _localedirs.get(domain, None),
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codeset=_localecodesets.get(domain))
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t = translation(domain, _localedirs.get(domain, None))
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except OSError:
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if n == 1:
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return msgid1
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@ -610,8 +652,14 @@ def dngettext(domain, msgid1, msgid2, n):
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return t.ngettext(msgid1, msgid2, n)
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def ldngettext(domain, msgid1, msgid2, n):
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import warnings
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warnings.warn('ldngettext() is deprecated, use dngettext() instead',
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DeprecationWarning, 2)
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codeset = _localecodesets.get(domain)
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try:
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with warnings.catch_warnings():
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warnings.filterwarnings('ignore', r'.*\bparameter codeset\b.*',
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DeprecationWarning)
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t = translation(domain, _localedirs.get(domain, None), codeset=codeset)
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except OSError:
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if n == 1:
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@ -619,18 +667,33 @@ def ldngettext(domain, msgid1, msgid2, n):
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else:
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tmsg = msgid2
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return tmsg.encode(codeset or locale.getpreferredencoding())
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with warnings.catch_warnings():
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warnings.filterwarnings('ignore', r'.*\blngettext\b.*',
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DeprecationWarning)
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return t.lngettext(msgid1, msgid2, n)
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def gettext(message):
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return dgettext(_current_domain, message)
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def lgettext(message):
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import warnings
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warnings.warn('lgettext() is deprecated, use gettext() instead',
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DeprecationWarning, 2)
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with warnings.catch_warnings():
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warnings.filterwarnings('ignore', r'.*\bldgettext\b.*',
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DeprecationWarning)
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return ldgettext(_current_domain, message)
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def ngettext(msgid1, msgid2, n):
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return dngettext(_current_domain, msgid1, msgid2, n)
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def lngettext(msgid1, msgid2, n):
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import warnings
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warnings.warn('lngettext() is deprecated, use ngettext() instead',
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DeprecationWarning, 2)
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with warnings.catch_warnings():
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warnings.filterwarnings('ignore', r'.*\bldngettext\b.*',
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DeprecationWarning)
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return ldngettext(_current_domain, msgid1, msgid2, n)
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# dcgettext() has been deemed unnecessary and is not implemented.
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@ -1,5 +1,6 @@
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import os
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import base64
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import contextlib
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import gettext
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import locale
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import unittest
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@ -461,60 +462,90 @@ class LGettextTestCase(GettextBaseTest):
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GettextBaseTest.setUp(self)
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self.mofile = MOFILE
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@contextlib.contextmanager
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def assertDeprecated(self, name):
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with self.assertWarnsRegex(DeprecationWarning,
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fr'^{name}\(\) is deprecated'):
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yield
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def test_lgettext(self):
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lgettext = gettext.lgettext
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ldgettext = gettext.ldgettext
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with self.assertDeprecated('lgettext'):
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self.assertEqual(lgettext('mullusk'), b'bacon')
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with self.assertDeprecated('lgettext'):
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self.assertEqual(lgettext('spam'), b'spam')
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with self.assertDeprecated('ldgettext'):
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self.assertEqual(ldgettext('gettext', 'mullusk'), b'bacon')
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with self.assertDeprecated('ldgettext'):
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self.assertEqual(ldgettext('gettext', 'spam'), b'spam')
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def test_lgettext_2(self):
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with open(self.mofile, 'rb') as fp:
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t = gettext.GNUTranslations(fp)
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lgettext = t.lgettext
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with self.assertDeprecated('lgettext'):
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self.assertEqual(lgettext('mullusk'), b'bacon')
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with self.assertDeprecated('lgettext'):
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self.assertEqual(lgettext('spam'), b'spam')
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def test_lgettext_bind_textdomain_codeset(self):
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lgettext = gettext.lgettext
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ldgettext = gettext.ldgettext
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with self.assertDeprecated('bind_textdomain_codeset'):
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saved_codeset = gettext.bind_textdomain_codeset('gettext')
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try:
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with self.assertDeprecated('bind_textdomain_codeset'):
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gettext.bind_textdomain_codeset('gettext', 'utf-16')
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with self.assertDeprecated('lgettext'):
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self.assertEqual(lgettext('mullusk'), 'bacon'.encode('utf-16'))
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with self.assertDeprecated('lgettext'):
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self.assertEqual(lgettext('spam'), 'spam'.encode('utf-16'))
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with self.assertDeprecated('ldgettext'):
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self.assertEqual(ldgettext('gettext', 'mullusk'), 'bacon'.encode('utf-16'))
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with self.assertDeprecated('ldgettext'):
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self.assertEqual(ldgettext('gettext', 'spam'), 'spam'.encode('utf-16'))
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finally:
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del gettext._localecodesets['gettext']
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with self.assertDeprecated('bind_textdomain_codeset'):
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gettext.bind_textdomain_codeset('gettext', saved_codeset)
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def test_lgettext_output_encoding(self):
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with open(self.mofile, 'rb') as fp:
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t = gettext.GNUTranslations(fp)
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lgettext = t.lgettext
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with self.assertDeprecated('set_output_charset'):
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t.set_output_charset('utf-16')
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with self.assertDeprecated('lgettext'):
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self.assertEqual(lgettext('mullusk'), 'bacon'.encode('utf-16'))
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with self.assertDeprecated('lgettext'):
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self.assertEqual(lgettext('spam'), 'spam'.encode('utf-16'))
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def test_lngettext(self):
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lngettext = gettext.lngettext
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ldngettext = gettext.ldngettext
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with self.assertDeprecated('lngettext'):
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x = lngettext('There is %s file', 'There are %s files', 1)
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self.assertEqual(x, b'Hay %s fichero')
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with self.assertDeprecated('lngettext'):
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x = lngettext('There is %s file', 'There are %s files', 2)
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self.assertEqual(x, b'Hay %s ficheros')
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with self.assertDeprecated('lngettext'):
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x = lngettext('There is %s directory', 'There are %s directories', 1)
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self.assertEqual(x, b'There is %s directory')
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with self.assertDeprecated('lngettext'):
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x = lngettext('There is %s directory', 'There are %s directories', 2)
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self.assertEqual(x, b'There are %s directories')
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with self.assertDeprecated('ldngettext'):
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x = ldngettext('gettext', 'There is %s file', 'There are %s files', 1)
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self.assertEqual(x, b'Hay %s fichero')
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with self.assertDeprecated('ldngettext'):
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x = ldngettext('gettext', 'There is %s file', 'There are %s files', 2)
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self.assertEqual(x, b'Hay %s ficheros')
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with self.assertDeprecated('ldngettext'):
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x = ldngettext('gettext', 'There is %s directory', 'There are %s directories', 1)
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self.assertEqual(x, b'There is %s directory')
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with self.assertDeprecated('ldngettext'):
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x = ldngettext('gettext', 'There is %s directory', 'There are %s directories', 2)
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self.assertEqual(x, b'There are %s directories')
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@ -522,55 +553,83 @@ class LGettextTestCase(GettextBaseTest):
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with open(self.mofile, 'rb') as fp:
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t = gettext.GNUTranslations(fp)
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lngettext = t.lngettext
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with self.assertDeprecated('lngettext'):
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x = lngettext('There is %s file', 'There are %s files', 1)
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self.assertEqual(x, b'Hay %s fichero')
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with self.assertDeprecated('lngettext'):
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x = lngettext('There is %s file', 'There are %s files', 2)
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self.assertEqual(x, b'Hay %s ficheros')
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with self.assertDeprecated('lngettext'):
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x = lngettext('There is %s directory', 'There are %s directories', 1)
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self.assertEqual(x, b'There is %s directory')
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with self.assertDeprecated('lngettext'):
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x = lngettext('There is %s directory', 'There are %s directories', 2)
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self.assertEqual(x, b'There are %s directories')
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def test_lngettext_bind_textdomain_codeset(self):
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lngettext = gettext.lngettext
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ldngettext = gettext.ldngettext
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with self.assertDeprecated('bind_textdomain_codeset'):
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saved_codeset = gettext.bind_textdomain_codeset('gettext')
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try:
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with self.assertDeprecated('bind_textdomain_codeset'):
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gettext.bind_textdomain_codeset('gettext', 'utf-16')
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with self.assertDeprecated('lngettext'):
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x = lngettext('There is %s file', 'There are %s files', 1)
|
||||
self.assertEqual(x, 'Hay %s fichero'.encode('utf-16'))
|
||||
with self.assertDeprecated('lngettext'):
|
||||
x = lngettext('There is %s file', 'There are %s files', 2)
|
||||
self.assertEqual(x, 'Hay %s ficheros'.encode('utf-16'))
|
||||
with self.assertDeprecated('lngettext'):
|
||||
x = lngettext('There is %s directory', 'There are %s directories', 1)
|
||||
self.assertEqual(x, 'There is %s directory'.encode('utf-16'))
|
||||
with self.assertDeprecated('lngettext'):
|
||||
x = lngettext('There is %s directory', 'There are %s directories', 2)
|
||||
self.assertEqual(x, 'There are %s directories'.encode('utf-16'))
|
||||
with self.assertDeprecated('ldngettext'):
|
||||
x = ldngettext('gettext', 'There is %s file', 'There are %s files', 1)
|
||||
self.assertEqual(x, 'Hay %s fichero'.encode('utf-16'))
|
||||
with self.assertDeprecated('ldngettext'):
|
||||
x = ldngettext('gettext', 'There is %s file', 'There are %s files', 2)
|
||||
self.assertEqual(x, 'Hay %s ficheros'.encode('utf-16'))
|
||||
with self.assertDeprecated('ldngettext'):
|
||||
x = ldngettext('gettext', 'There is %s directory', 'There are %s directories', 1)
|
||||
self.assertEqual(x, 'There is %s directory'.encode('utf-16'))
|
||||
with self.assertDeprecated('ldngettext'):
|
||||
x = ldngettext('gettext', 'There is %s directory', 'There are %s directories', 2)
|
||||
self.assertEqual(x, 'There are %s directories'.encode('utf-16'))
|
||||
finally:
|
||||
del gettext._localecodesets['gettext']
|
||||
with self.assertDeprecated('bind_textdomain_codeset'):
|
||||
gettext.bind_textdomain_codeset('gettext', saved_codeset)
|
||||
|
||||
def test_lngettext_output_encoding(self):
|
||||
with open(self.mofile, 'rb') as fp:
|
||||
t = gettext.GNUTranslations(fp)
|
||||
lngettext = t.lngettext
|
||||
with self.assertDeprecated('set_output_charset'):
|
||||
t.set_output_charset('utf-16')
|
||||
with self.assertDeprecated('lngettext'):
|
||||
x = lngettext('There is %s file', 'There are %s files', 1)
|
||||
self.assertEqual(x, 'Hay %s fichero'.encode('utf-16'))
|
||||
with self.assertDeprecated('lngettext'):
|
||||
x = lngettext('There is %s file', 'There are %s files', 2)
|
||||
self.assertEqual(x, 'Hay %s ficheros'.encode('utf-16'))
|
||||
with self.assertDeprecated('lngettext'):
|
||||
x = lngettext('There is %s directory', 'There are %s directories', 1)
|
||||
self.assertEqual(x, 'There is %s directory'.encode('utf-16'))
|
||||
with self.assertDeprecated('lngettext'):
|
||||
x = lngettext('There is %s directory', 'There are %s directories', 2)
|
||||
self.assertEqual(x, 'There are %s directories'.encode('utf-16'))
|
||||
|
||||
def test_output_encoding(self):
|
||||
with open(self.mofile, 'rb') as fp:
|
||||
t = gettext.GNUTranslations(fp)
|
||||
with self.assertDeprecated('set_output_charset'):
|
||||
t.set_output_charset('utf-16')
|
||||
with self.assertDeprecated('output_charset'):
|
||||
self.assertEqual(t.output_charset(), 'utf-16')
|
||||
|
||||
|
||||
class GNUTranslationParsingTest(GettextBaseTest):
|
||||
def test_plural_form_error_issue17898(self):
|
||||
|
|
@ -642,6 +701,16 @@ class GettextCacheTestCase(GettextBaseTest):
|
|||
self.assertEqual(len(gettext._translations), 2)
|
||||
self.assertEqual(t.__class__, DummyGNUTranslations)
|
||||
|
||||
# Test deprecated parameter codeset
|
||||
with self.assertWarnsRegex(DeprecationWarning, 'parameter codeset'):
|
||||
t = gettext.translation('gettext', self.localedir,
|
||||
class_=DummyGNUTranslations,
|
||||
codeset='utf-16')
|
||||
self.assertEqual(len(gettext._translations), 2)
|
||||
self.assertEqual(t.__class__, DummyGNUTranslations)
|
||||
with self.assertWarns(DeprecationWarning):
|
||||
self.assertEqual(t.output_charset(), 'utf-16')
|
||||
|
||||
|
||||
class MiscTestCase(unittest.TestCase):
|
||||
def test__all__(self):
|
||||
|
|
@ -649,11 +718,8 @@ class MiscTestCase(unittest.TestCase):
|
|||
support.check__all__(self, gettext, blacklist=blacklist)
|
||||
|
||||
|
||||
def test_main():
|
||||
support.run_unittest(__name__)
|
||||
|
||||
if __name__ == '__main__':
|
||||
test_main()
|
||||
unittest.main()
|
||||
|
||||
|
||||
# For reference, here's the .po file used to created the GNU_MO_DATA above.
|
||||
|
|
|
|||
|
|
@ -0,0 +1,4 @@
|
|||
Deprecated ``l*gettext()`` functions and methods in the :mod:`gettext`
|
||||
module. They return encoded bytes instead of Unicode strings and are
|
||||
artifacts from Python 2 times. Also deprecated functions and methods related
|
||||
to setting the charset for ``l*gettext()`` functions and methods.
|
||||
Loading…
Reference in New Issue