/usr/local/lib/python3.8/dist-packages/gpiozero/devices.py:288: PinFactoryFallback: Falling back from rpigpio: No module named 'RPi' warnings.warn( /usr/local/lib/python3.8/dist-packages/gpiozero/devices.py:288: PinFactoryFallback: Falling back from lgpio: No module named 'lgpio' warnings.warn( /usr/local/lib/python3.8/dist-packages/gpiozero/devices.py:288: PinFactoryFallback: Falling back from rpio: No module named 'RPIO' warnings.warn( /usr/local/lib/python3.8/dist-packages/gpiozero/devices.py:288: PinFactoryFallback: Falling back from pigpio: No module named 'pigpio' warnings.warn( /usr/local/lib/python3.8/dist-packages/gpiozero/devices.py:288: PinFactoryFallback: Falling back from native: unable to locate Pi revision in /proc/device-tree or /proc/cpuinfo warnings.warn( Traceback (most recent call last): File "fan.py", line 3, in <module> fan=OutputDevice(pin=121) File "/usr/local/lib/python3.8/dist-packages/gpiozero/devices.py", line 108, in __call__ self = super(GPIOMeta, cls).__call__(*args, **kwargs) File "/usr/local/lib/python3.8/dist-packages/gpiozero/output_devices.py", line 83, in __init__ super(OutputDevice, self).__init__(pin, pin_factory=pin_factory) File "/usr/local/lib/python3.8/dist-packages/gpiozero/mixins.py", line 85, in __init__ super(SourceMixin, self).__init__(*args, **kwargs) File "/usr/local/lib/python3.8/dist-packages/gpiozero/devices.py", line 540, in __init__ super(GPIODevice, self).__init__(**kwargs) File "/usr/local/lib/python3.8/dist-packages/gpiozero/devices.py", line 250, in __init__ Device.pin_factory = Device._default_pin_factory() File "/usr/local/lib/python3.8/dist-packages/gpiozero/devices.py", line 291, in _default_pin_factory raise BadPinFactory('Unable to load any default pin factory!') gpiozero.exc.BadPinFactory: Unable to load any default pin factory!

这个错误表示GPIOZERO无法加载任何默认的引脚工厂。这通常是因为缺少必要的依赖项或配置不正确。

根据您提供的错误信息，可能是因为缺少RPi.GPIO库或其他相关库。请尝试按照以下步骤解决问题：

1.确保已安装RPi.GPIO库。您可以使用以下命令进行安装：

pip install RPi.GPIO

2.如果您没有在树莓派上运行代码，而是在其他设备上进行开发和测试，那么GPIOZERO将无法使用RPi.GPIO库。在这种情况下，您可以尝试使用Mock Pin Factory，它可以模拟GPIO引脚的功能。在导入GPIOZERO之前，将其设置为默认引脚工厂：

from gpiozero.pins.mock import MockFactory
from gpiozero import Device

Device.pin_factory = MockFactory()

请注意，使用模拟引脚工厂时，您将无法实际控制硬件。

3.如果上述步骤都无法解决问题，您可能需要检查其他依赖项或配置。请确保您的环境中没有缺少其他必要的库，并且您的用户有足够的权限来访问GPIO引脚。

如果问题仍然存在，请提供更多详细信息，以便我能够更好地帮助您解决问题。

相关问题

ImportError: /usr/local/lib/python3.8/dist-packages/mmcv/_ext.cpython-38-x86_64-linux-gnu.so:

这个错误是一个ImportError，它指的是找不到一个名为"/usr/local/lib/python3.8/dist-packages/mmcv/_ext.cpython-38-x86_64-linux-gnu.so"的共享对象或动态链接库。具体的错误信息是"undefined symbol: Z27points_in_boxes_cpu_forwardN2at6TensorES0_S0"。

要解决这个问题，可以尝试使用ldd命令来查看"/usr/lib/python3/dist-packages/PyQt5/QtCore.cpython-37m-arm-linux-gnueabihf.so"依赖的库。可以在终端中输入"ldd /usr/lib/python3/dist-packages/PyQt5/QtCore.cpython-37m-arm-linux-gnueabihf.so"来查看。

另外，你还可以参考一个博客文章，链接为https://forums.linuxmint.com/viewtopic.php?f=47&t=291157，在这篇文章中有可能会提供一些关于解决这个问题的有用信息。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [ImportError: /usr/local/anaconda3/envs/py38/lib/python3.8/site-packages/mmcv/_ext.cpython-38-x86_64-](https://blog.csdn.net/weixin_42130300/article/details/121616567)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
- *2* *3* [报错[ImportError: /usr/lib/python3/dist-packages/PyQt5/QtCore.cpython-37m-arm-linux-gnuea]](https://blog.csdn.net/mmmm0584/article/details/119382032)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 50%"]
[ .reference_list ]

docker-py version: <module 'docker.version' from '/usr/local/lib/python3.8/dist-packages/docker/version.py'>

这个信息告诉我们你正在使用的是Python Docker SDK中的docker-py模块，版本号为/usr/local/lib/python3.8/dist-packages/docker/version.py。这个模块允许你通过Python与Docker API进行交互，例如创建、启动、停止、删除Docker容器等。你可以使用这个模块轻松地与Docker进行集成。