Remove Babel version workaround code

Since Babel>=1.3 is required, code to work with earlier versions
can be removed and the logic made clearer.

Change-Id: I33f358912802fb1bd49ed377d974af9e213b9257

1 files changed, 4 insertions, 16 deletions

diff --git a/oslo/i18n/gettextutils.py b/oslo/i18n/gettextutils.py
index 38f78eb..03e72ab 100644
--- a/oslo/i18n/gettextutils.py
+++ b/oslo/i18n/gettextutils.py
@@ -73,25 +73,13 @@ def get_available_languages(domain):
     # NOTE(mrodden): en_US should always be available (and first in case
     # order matters) since our in-line message strings are en_US
     language_list = ['en_US']
-    # NOTE(luisg): Babel <1.0 used a function called list(), which was
-    # renamed to locale_identifiers() in >=1.0, the requirements master list
-    # requires >=0.9.6, uncapped, so defensively work with both. We can remove
-    # this check when the master list updates to >=1.0, and update all projects
-    list_identifiers = (getattr(localedata, 'list', None) or
-                        getattr(localedata, 'locale_identifiers'))
-    locale_identifiers = list_identifiers()
-
+    locale_identifiers = localedata.locale_identifiers()
     language_list.extend(language for language in locale_identifiers
                          if find(language, domain, localedir))
 
-    # NOTE(luisg): Babel>=1.0,<1.3 has a bug where some OpenStack supported
-    # locales (e.g. 'zh_CN', and 'zh_TW') aren't supported even though they
-    # are perfectly legitimate locales:
-    #     https://github.com/mitsuhiko/babel/issues/37
-    # In Babel 1.3 they fixed the bug and they support these locales, but
-    # they are still not explicitly "listed" by locale_identifiers().
-    # That is  why we add the locales here explicitly if necessary so that
-    # they are listed as supported.
+    # In Babel 1.3, locale_identifiers() doesn't list some OpenStack supported
+    # locales (e.g. 'zh_CN', and 'zh_TW') so we add the locales explicitly if
+    # necessary so that they are listed as supported.
     aliases = {'zh': 'zh_CN',
                'zh_Hant_HK': 'zh_HK',
                'zh_Hant': 'zh_TW',