TypeError: string indices must be integers

[device-4]

Search before asking

• I have searched the YOLOv5 issues and found no similar bug report.

YOLOv5 Component

Training

Bug

I discovered this error during the training process,it appears in the generals.py on the no.523 line,and I can't find a solution

Environment

python:3.9.13
pytorch:1.9.1

Minimal Reproducible Example

Traceback (most recent call last):
File "D:\YOLOV5\yolov5-master\train.py", line 643, in
main(opt)
File "D:\YOLOV5\yolov5-master\train.py", line 532, in main
train(opt.hyp, opt, device, callbacks)
File "D:\YOLOV5\yolov5-master\train.py", line 113, in train
data_dict = data_dict or check_dataset(data) # check if None
File "D:\YOLOV5\yolov5-master\utils\general.py", line 523, in check_dataset
if isinstance(data['names'], (list, tuple)): # old array format
TypeError: string indices must be integers

Additional

No response

Are you willing to submit a PR?

• Yes I'd like to help by submitting a PR!

[github-actions]

👋 Hello @device-4, thank you for your interest in YOLOv5 🚀! Please visit our ⭐️ Tutorials to get started, where you can find quickstart guides for simple tasks like Custom Data Training all the way to advanced concepts like Hyperparameter Evolution.

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[glenn-jocher]

Hi @device-4! Thanks for reporting this issue 🙌.

This error seems to be caused by the data dictionary not including a names key of the expected format (it should be an indexable, such as a list or tuple). Could you check your dataset to verify that it is in the correct format?

If the dataset itself looks okay, this could also be an issue with how the dataset is being read by YOLOv5. Have you modified the data.yaml or any of the .yaml files in the ./data directory in any way?

We appreciate your willingness to submit a PR. Before submitting, please make sure you are able to reproduce the error with a minimal example, preferably using one of the demo datasets from the YOLOv5 repository. This will help us verify that the issue is with the YOLOv5 code and not with the dataset itself.

Best of luck and please let us know if you have any further questions or information that could help us track down the issue!

[device-4]

I've solved that problem,my data.yaml file format is incorrect,thank u very much!

[glenn-jocher]

@device-4 glad to hear that your issue is resolved! We're always here to help if you encounter any more issues in the future.
Have a great day!

[github-actions]

👋 Hello there! We wanted to give you a friendly reminder that this issue has not had any recent activity and may be closed soon, but don't worry - you can always reopen it if needed. If you still have any questions or concerns, please feel free to let us know how we can help.

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