yolov5运行detect.by 出现from models.common import DetectMultiBackend

这个问题可能是由于您的代码中缺少相关的依赖或模块导致的。检查一下您的代码中是否有导入`DetectMultiBackend`的相关模块或依赖项，并确保它们已经正确安装或导入。

此外，如果您正在使用yolov5的最新版本，请确保您的代码与最新版本匹配，并且您的环境和依赖项已经正确配置。

如果以上解决方案无效，请提供更多详细信息，例如您的代码片段、使用的环境和依赖项等，以便我更好地帮助您解决问题。

相关问题

(python39) D:\23101\yolov5-master>python export.py --weights best.pt --img-size 640 --batch-size 1 --include onnx Traceback (most recent call last): File "D:\23101\yolov5-master\export.py", line 71, in <module> from models.yolo import ClassificationModel, Detect, DetectionModel, SegmentationModel File "D:\23101\yolov5-master\models\yolo.py", line 24, in <module> from models.common import * File "D:\23101\yolov5-master\models\common.py", line 28, in <module> from utils.dataloaders import exif_transpose, letterbox File "D:\23101\yolov5-master\utils\dataloaders.py", line 31, in <module> from utils.augmentations import (Albumentations, augment_hsv, classify_albumentations, classify_transforms, copy_paste, File "D:\23101\yolov5-master\utils\augmentations.py", line 15, in <module> from utils.general import LOGGER, check_version, colorstr, resample_segments, segment2box, xywhn2xyxy File "D:\23101\yolov5-master\utils\general.py", line 38, in <module> from ultralytics.yolo.utils.checks import check_requirements ModuleNotFoundError: No module named 'ultralytics'

这个错误提示是缺少 `ultralytics` 模块，你需要先安装 `ultralytics` 模块，可以使用以下命令安装：

pip install ultralytics

安装完成后再次运行 `export.py` 应该就可以了。

python detect.py /usr/lib/python3/dist-packages/pkg_resources/__init__.py:1235: UserWarning: /home/ucar/.cache/Python-Eggs is writable by group/others and vulnerable to attack when used with get_resource_filename. Consider a more secure location (set with .set_extraction_path or the PYTHON_EGG_CACHE environment variable). warnings.warn(msg, UserWarning) Downloading https://ultralytics.com/assets/Arial.ttf to /home/ucar/.config/Ultralytics/Arial.ttf... Traceback (most recent call last): File "/home/ucar/yolov3-9.6.0/utils/plots.py", line 58, in check_font return ImageFont.truetype(str(font) if font.exists() else font.name, size) File "/usr/local/lib/python3.6/dist-packages/PIL/ImageFont.py", line 655, in truetype return freetype(font) File "/usr/local/lib/python3.6/dist-packages/PIL/ImageFont.py", line 652, in freetype return FreeTypeFont(font, size, index, encoding, layout_engine) File "/usr/local/lib/python3.6/dist-packages/PIL/ImageFont.py", line 194, in __init__ font, size, index, encoding, layout_engine=layout_engine OSError: cannot open resource During handling of the above exception, another exception occurred: Traceback (most recent call last): File "detect.py", line 30, in <module> from models.common import DetectMultiBackend File "/home/ucar/yolov3-9.6.0/models/common.py", line 25, in <module> from utils.plots import Annotator, colors, save_one_box File "/home/ucar/yolov3-9.6.0/utils/plots.py", line 70, in <module> class Annotator: File "/home/ucar/yolov3-9.6.0/utils/plots.py", line 72, in Annotator check_font() # download TTF if necessary File "/home/ucar/yolov3-9.6.0/utils/plots.py", line 64, in check_font return ImageFont.truetype(str(font), size) File "/usr/local/lib/python3.6/dist-packages/PIL/ImageFont.py", line 655, in truetype return freetype(font) File "/usr/local/lib/python3.6/dist-packages/PIL/ImageFont.py", line 652, in freetype return FreeTypeFont(font, size, index, encoding, layout_engine) File "/usr/local/lib/python3.6/dist-packages/PIL/ImageFont.py", line 194, in __init__ font, size, index, encoding, layout_engine=layout_engine OSError: cannot open resource

这个错误看起来是在运行`detect.py`时出现的。根据错误信息，似乎是由于缺少字体文件`Arial.ttf`导致的。可以尝试使用以下命令下载该字体文件：

mkdir -p /home/ucar/.config/Ultralytics && \
    cd /home/ucar/.config/Ultralytics && \
    wget https://ultralytics.com/assets/Arial.ttf

如果您已经下载过该字体文件，那么可能是权限问题导致程序无法访问该文件。可以检查一下该文件的读写权限是否正确设置。另外，如果您是在服务器上运行程序，可能需要使用`sudo`命令以管理员身份运行。