我在OSError: dlopen() failed to load a library: cairo / cairo-2新安装后尝试执行 Django。使用 Windows。
根据完整的跟踪，我正在使用 Weasyprint，似乎与那个有关：
Unhandled exception in thread started by <function wrapper at 0x03F605B0>
Traceback (most recent call last):
File "C:\my-venv\lib\site-packages\django\utils\autoreload.py", line 226, in wrapper
fn(*args, **kwargs)
File "C:\my-venv\lib\site-packages\django\core\management\commands\runserver.py", line 109, in inner_run
autoreload.raise_last_exception()
File "C:\my-venv\lib\site-packages\django\utils\autoreload.py", line 249, in raise_last_exception
six.reraise(*_exception)
File "C:\my-venv\lib\site-packages\django\utils\autoreload.py", line 226, in wrapper
fn(*args, **kwargs)
File "C:\my-venv\lib\site-packages\django\__init__.py", line 18, in setup
apps.populate(settings.INSTALLED_APPS)
File "C:\my-venv\lib\site-packages\django\apps\registry.py", line 115, in populate
app_config.ready()
File "C:\my-venv\lib\site-packages\debug_toolbar\apps.py", line 15, in ready
dt_settings.patch_all()
File "C:\my-venv\lib\site-packages\debug_toolbar\settings.py", line 243, in patch_all
patch_root_urlconf()
File "C:\my-venv\lib\site-packages\debug_toolbar\settings.py", line 231, in patch_root_urlconf
reverse('djdt:render_panel')
File "C:\my-venv\lib\site-packages\django\core\urlresolvers.py", line 568, in reverse
app_list = resolver.app_dict[ns]
File "C:\my-venv\lib\site-packages\django\core\urlresolvers.py", line 360, in app_dict
self._populate()
File "C:\my-venv\lib\site-packages\django\core\urlresolvers.py", line 293, in _populate
for pattern in reversed(self.url_patterns):
File "C:\my-venv\lib\site-packages\django\utils\functional.py", line 33, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\my-venv\lib\site-packages\django\core\urlresolvers.py", line 417, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "C:\my-venv\lib\site-packages\django\utils\functional.py", line 33, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\my-venv\lib\site-packages\django\core\urlresolvers.py", line 410, in urlconf_module
return import_module(self.urlconf_name)
File "C:\Python27\Lib\importlib\__init__.py", line 37, in import_module
__import__(name)
File "C:\my-project\project\urls.py", line 9, in <module>
from utils.views import site_info, nav_autocomplete
File "C:\my-project\utils\views.py", line 24, in <module>
import weasyprint
File "C:\my-venv\lib\site-packages\weasyprint\__init__.py", line 338, in <module>
from .css import PARSER, preprocess_stylesheet # noqa
File "C:\my-venv\lib\site-packages\weasyprint\css\__init__.py", line 30, in <module>
from . import computed_values
File "C:\my-venv\lib\site-packages\weasyprint\css\computed_values.py", line 18, in <module>
from .. import text
File "C:\my-venv\lib\site-packages\weasyprint\text.py", line 18, in <module>
import cairocffi as cairo
File "C:\my-venv\lib\site-packages\cairocffi\__init__.py", line 46, in <module>
cairo = dlopen(ffi, 'cairo', 'cairo-2')
File "C:\my-venv\lib\site-packages\cairocffi\__init__.py", line 43, in dlopen
raise OSError("dlopen() failed to load a library: %s" % ' / '.join(names))
OSError: dlopen() failed to load a library: cairo / cairo-2