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Error Message "Unexpected keyword argument passed to optimizer" Is Displayed in Logs
Updated on 2025-06-06 GMT+08:00
Error Message "Unexpected keyword argument passed to optimizer" Is Displayed in Logs
Symptom
After upgrading Keras to version 2.3.0 or later, you encounter the following error message:
TypeError: Unexpected keyword argument passed to optimizer: learning_rate
Possible Causes
Certain parameters have been renamed in Keras 2.3.0.
Solution
Rename lr in the training code to learning_rate.
Summary and Suggestions
Before creating a training job, use the ModelArts development environment to debug your training code and minimize migration errors.
- Use the notebook environment for online debugging. For details, see Using JupyterLab to Develop Models.
- Use a local IDE (PyCharm or VS Code) to access the cloud environment for debugging. For details, see Using a Local IDE to Develop Models.
Parent topic: Service Code Issues
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