为了提供一些背景信息，我正在实习将Django应用程序从1.4.22升级到1.11，将python 2升级到3。
该项目的分解不充分，当我尝试对其进行重构时，我得到了一个奇怪的堆栈：
Traceback (most recent call last):
File "/home/antonin/Developpement/Projet/djangoproject2/djangoproject/manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
utility.execute()
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/core/management/__init__.py", line 354, in execute
django.setup()
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/__init__.py", line 21, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/apps/registry.py", line 108, in populate
app_config.import_models(all_models)
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/apps/config.py", line 202, in import_models
self.models_module = import_module(models_module_name)
File "/usr/lib64/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/home/antonin/Developpement/Projet/djangoproject2/djangoproject/instance/models.py", line 54, in <module>
YEARS += [(str(yr), _(u"n+%(year)d") % {'year': yr}) for yr in range(1, 20)]
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/utils/functional.py", line 179, in __mod__
return six.text_type(self) % rhs
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/utils/functional.py", line 144, in __text_cast
return func(*self.__args, **self.__kw)
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/utils/translation/__init__.py", line 83, in ugettext
return _trans.ugettext(message)
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 325, in ugettext
return do_translate(message, 'ugettext')
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 306, in do_translate
_default = translation(settings.LANGUAGE_CODE)
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 209, in translation
default_translation = _fetch(settings.LANGUAGE_CODE)
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 195, in _fetch
res = _merge(apppath)
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 177, in _merge
t = _translation(path)
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 159, in _translation
t = gettext_module.translation('django', path, [loc], DjangoTranslation)
File "/usr/lib64/python2.7/gettext.py", line 554, in translation
t = _translations.setdefault(key, class_(fp))
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 107, in __init__
gettext_module.GNUTranslations.__init__(self, *args, **kw)
File "/usr/lib64/python2.7/gettext.py", line 255, in __init__
self._parse(fp)
File "/usr/lib64/python2.7/gettext.py", line 348, in _parse
magic = unpack('<I', buf[:4])[0]
struct.error: unpack requires a string argument of length 4
当我尝试使用逐步模式进行调试时，我发现问题出在
File "/home/antonin/Developpement/Projet/djangoproject2/venv/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 107, in __init__
gettext_module.GNUTranslations.__init__(self, *args, **kw)
其中fp.read（）接收u'path / to / file.po'（正确的路径）并返回空缓冲区。但我看不出有什么原因。
编辑：谢谢，哈肯，确实是.mo文件损坏了。问题解决了。