django - 在 Windows 上获取 "OSError: dlopen() failed to load a library: cairo/cairo-2"

Question

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

根据完整的跟踪，我正在使用 Wea​​syprint，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

Answer 1

见 http://win32builder.gnome.org/或 http://gtk-win.sourceforge.net/home/获取要安装的 GTK+ 包列表。这些包括所需的 cairo/cairo-2 库。

提取 bin\ 的内容文件夹到例如C:\Program Files (x86)\GTK2-bundle\ (任何目录都可以)

将上述目录添加到您的 PATH 环境变量

重启你的开发环境(在我的例子中是 PyCharm)