Fix TypeError when accelerator_type is None in config.yaml

[ackizilkale]

Root Cause

The _is_amd() method checks if the accelerator_type key exists but doesn't validate that its value is not None before attempting to iterate over it.

Solution

Added a null/empty check before iterating over accelerator_type:

• Check if accelerator_type value is not None or empty
• Only iterate if the value is a valid list/iterable
• Gracefully handles cases where accelerator_type is explicitly set to null

Testing

• Verified fix handles accelerator_type: null correctly
• No errors when field is missing or empty
• Normal GPU detection still works when valid values are provided

Impact

• Users affected: Anyone uploading CPU-only models or models with accelerator_type: null in config.yaml
• Severity: High - Command was completely broken for this use case
• Risk: Low - Minimal change with proper null checking

Fixes the model upload workflow for CPU-only models.

[github-actions]

Package	Line Rate	Health
clarifai	45%	❌
clarifai.cli	60%	➖
clarifai.cli.templates	46%	❌
clarifai.client	67%	➖
clarifai.client.auth	67%	➖
clarifai.constants	100%	✔
clarifai.datasets	100%	✔
clarifai.datasets.export	80%	✔
clarifai.datasets.upload	75%	➖
clarifai.datasets.upload.loaders	37%	❌
clarifai.models	100%	✔
clarifai.modules	0%	❌
clarifai.rag	0%	❌
clarifai.runners	52%	➖
clarifai.runners.models	62%	➖
clarifai.runners.pipeline_steps	41%	❌
clarifai.runners.pipelines	77%	➖
clarifai.runners.utils	62%	➖
clarifai.runners.utils.data_types	72%	➖
clarifai.schema	100%	✔
clarifai.urls	60%	➖
clarifai.utils	59%	➖
clarifai.utils.evaluation	67%	➖
clarifai.workflows	95%	✔
Summary	62% (8528 / 13676)	➖

Minimum allowed line rate is 50%