Question

我在新安装后尝试执行Django时得到OSError: dlopen() failed to load a library: cairo / cairo-2。使用Windows。

我正在使用Weasyprint，似乎与那个相关，根据完整的痕迹：

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

Answer 1

有关要安装的GTK +捆绑包的列表，请参阅http://win32builder.gnome.org/或http://gtk-win.sourceforge.net/home/。这些包括所需的cairo / cairo-2库。

将bin\文件夹的内容提取到例如C:\Program Files (x86)\GTK2-bundle\（任何目录都可以）
将上述目录添加到PATH环境变量
重新启动您的开发环境（在我的案例中为PyCharm）

Answer 2

我在Windows X64 / Python37上也遇到了同样的问题，但是我通过波纹管固定了问题：

请遵循以下步骤：https://weasyprint.readthedocs.io/en/stable/install.html#windows，（我使用MSYS Installer安装了gtk，并将C：\ msys64 \ mingw32 \ bin添加到PATH变量中，此后，我发生了相同的错误，并删除了cairocffi python库并重新安装它）

Answer 3

我收到以下错误消息：OSError: dlopen() failed to load a library: cairo / cairo-2 / cairo-gobject-2，在 Windows 10 上。

包含上述库的 GTK+ 库可以从 https://github.com/tschoonj/GTK-for-Windows-Runtime-Environment-Installer，如 https://weasyprint.readthedocs.io/en/latest/install.html#gtk64installer 所述。

请注意，您的开发环境需要重新启动才能读取 PATH。

在Windows上获取“OSError：dlopen（）无法加载库：cairo / cairo-2”

3 个答案: