How to Fix TypeError: load() Missing Required Argument 'Loader' in Python YOLOv5 Project

Summary: If you encounter the `TypeError: load() missing 1 required positional argument: 'Loader'` error in Python YOLOv5 projects, here’s a step-by-step guide to resolve it.
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How to Fix TypeError: load() Missing Required Argument 'Loader' in Python YOLOv5 Project

When working on a YOLOv5 project in Python, you might come across an error message like this:

[[See Video to Reveal this Text or Code Snippet]]

The error is generally caused by the incorrect usage of the pyyaml library. Specifically, the load() function from pyyaml requires a Loader argument when dealing with YAML files in a secure manner. Let's walk through how to fix this issue step-by-step.

Understanding the Error

PYAML's load() function has undergone changes, and it now requires a Loader argument to explicitly specify the loader type. This change was made primarily to prevent security vulnerabilities associated with loading YAML content.

Step-by-Step Solution

Here's how you can modify your code to fix this error:

Identify the YAML Loading Code:
First, find the part of your code where the YAML file is being loaded. It might look something like this:

[[See Video to Reveal this Text or Code Snippet]]

Specify a Loader:

yaml.FullLoader: Loads the full YAML document.

yaml.SafeLoader: Loads a subset of YAML that safely deserializes without code execution risk.

For instance, to use the SafeLoader, your modified code should look like the following:

[[See Video to Reveal this Text or Code Snippet]]

Run Your Code:
After updating your YAML loading code to include the appropriate Loader, run your Python script again. This should resolve the TypeError.

Example in YOLOv5 Context

[[See Video to Reveal this Text or Code Snippet]]

By ensuring that the loader is specified, you avoid the TypeError and ensure your YAML files are loaded correctly and securely.

Conclusion

Happy coding!