在金字塔中使用 babel 和 lingua

Question

我对 babel 和 lingua 有疑问。我希望 babel/lingua 扫描我的源文件夹以查找用于创建 pot-目录的特定字符串。

这是我的setup.py

...

requires = [
    ...
    'Babel',
    'lingua',
    ]

extractors = { 'dbas': [
    ('**.py', 'python', None ),
    ('**.pt', 'chameleon', None ),
    ('static/**', 'ignore', None),
    ]}

setup(name='DBAS',
    ...
    message_extractors=extractors,
    ...
    )

还有我的setup.cfg

[compile_catalog]
directory = dbas/locale
domain = mydbas
statistics = true

[extract_messages]
copyright_holder = Acme Inc.
output_file = dbas/locale/mydbas.pot
charset = UTF-8

[init_catalog]
domain = mydbas
input_file = dbas/locale/mydbas.pot
output_dir = dbas/locale

[update_catalog]
domain = mydbas
input_file = dbas/locale/mydbas.pot
output_dir = dbas/locale
previous = true

在我的 init.py 中我有这样的东西：

config.add_translation_dirs('dbas:locale')

例如我的 404 模板就是这个：

<!DOCTYPE html>
<html lang="${request.locale_name}"
            metal:use-macro="load: basetemplate.pt"
            xmlns="http://www.w3.org/1999/xhtml"
            xml:lang="en"
            xmlns:i18n="http://xml.zope.org/namespaces/i18n"
            i18n:domain="dbas">

<head>
    <link type="text/css" href="${request.static_url('dbas:static/css/theme_center.css')}" rel="stylesheet">
</head>

<body>

    <div class="center">
        <div class="error">
            <h1><span class="font-semi-bold" i18n:translate="404">404 Error</span></h1>
            <p class="lead font-normal">The page &quot;<span class="font-semi-bold">${page_notfound_viewname}</span>&quot; for could not be found.</p>
            <br>
            <input class="button button-block btn-lg btn btn-primary" type="submit" onClick="self.location.href='/'" value="Let's go home!" />
        </div>
    </div>

</body>
<html>

现在我可以运行:

python3 setup.py develop
setup.py extract_messages

我收到了：

running extract_messages
extracting messages from dbas/__init__.py
extracting messages from dbas/helper.py
extracting messages from dbas/security.py
extracting messages from dbas/tests.py
extracting messages from dbas/views.py
extracting messages from dbas/database/__init__.py
extracting messages from dbas/database/initializedb.py
extracting messages from dbas/database/model.py
extracting messages from dbas/templates/404.pt
Traceback (most recent call last):
  File "setup.py", line 60, in <module>
    """,
  File "/usr/lib/python3.4/distutils/core.py", line 148, in setup
    dist.run_commands()
  File "/usr/lib/python3.4/distutils/dist.py", line 955, in run_commands
    self.run_command(cmd)
  File "/usr/lib/python3.4/distutils/dist.py", line 974, in run_command
    cmd_obj.run()
  File "/usr/local/lib/python3.4/dist-packages/babel/messages/frontend.py", line 305, in run
    for filename, lineno, message, comments, context in extracted:
  File "/usr/local/lib/python3.4/dist-packages/babel/messages/extract.py", line 163, in extract_from_dir
    strip_comment_tags):
  File "/usr/local/lib/python3.4/dist-packages/babel/messages/extract.py", line 190, in extract_from_file
    strip_comment_tags))
  File "/usr/local/lib/python3.4/dist-packages/babel/messages/extract.py", line 262, in extract
    raise ValueError('Unknown extraction method %r' % method)
ValueError: Unknown extraction method 'chameleon'

有人知道吗，怎么了？

Answer 1

您的 message_extractors 配置对于最新版本的 babel 和 lingua 可能已经过时。出于调试目的，您 could ask for lingua extractors。我实际上不知道如何为 babel 执行此操作。

$ bin/pot-create --list-extractors
chameleon         Chameleon templates (defaults to Python expressions)
python            Python sources
xml               Chameleon templates (defaults to Python expressions)
zcml              Zope Configuration Markup Language (ZCML)
zope              Zope templates (defaults to TALES expressions)

我最近关注了 pyramid's narrative documentation for i18n/l10。提取工作流程似乎已经改变。使用 lingua >=3.0.9 和 babel==1.3 我不再需要像 setup.cfg 这样的任何 setuptools 集成配置，也不需要为我和你的常见情况定义 message_extractors。从 python 和变色龙模板中提取消息字符串开箱即用。但是金字塔文档应该稍微改进一下。

几天后 I notified the pyramid project about my observations on the topic and suggested a small change to lingua i18n.sh script that helps finding fuzzy messages。可能这些资源也对您有帮助。

在金字塔中使用 babel 和 lingua

Using babel and lingua in pyramid

python

localization

internationalization

pyramid

python-babel