我有一些进口：
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
from gi.repository import Gdk, GdkPixBuf
引发错误（可能为 2）：
WARNING **: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files
Traceback (most recent call last):
File "<frozen importlib._bootstrap>", line 2158, in _find_spec
AttributeError: 'DynamicImporter' object has no attribute 'find_spec'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "camerapython.py", line 10, in <module>
from gi.repository import Gdk, GdkPixBuf
File "/usr/lib/python3/dist-packages/gi/importer.py", line 53, in find_module
'introspection typelib not found' % namespace)
ImportError: cannot import name GdkPixBuf, introspection typelib not found
我注意到的是，在 gi 的 importer.py 中，repository.enumerate_versions(namespace) 为 GdkPixBuf 返回 [] （因此引发错误）。
其他进口返回一些东西：
Gtk : ['3.0']
GObject : ['2.0', '2.0']
GLib : ['2.0', '2.0']
Atk : ['1.0', '1.0']
Gdk : ['3.0', '3.0']
cairo : ['1.0', '1.0']
如果需要，我的 dist 是 Raspbian (Raspberry Pi 3)。