Fixing 'No Module Named 'utils3D' In HunyuanWorld-1.0

Nov 28, 2025 by Alex Johnson 54 views

Fixing 'No module named 'utils3D' Error in HunyuanWorld-1.0

Experiencing the frustrating ModuleNotFoundError: No module named 'utils3d' while trying to run HunyuanWorld-1.0? You're not alone! This error, along with other missing package issues like transformers and diffusers, can be a common stumbling block when setting up the environment. But don't worry, this comprehensive guide will walk you through the steps to resolve these issues and get HunyuanWorld-1.0 up and running smoothly.

Understanding the 'No module named 'utils3D' Error

When diving into new projects like HunyuanWorld-1.0, encountering module errors can be a common hurdle. The ModuleNotFoundError: No module named 'utils3d' error specifically indicates that Python cannot find a module named utils3d. In the context of HunyuanWorld-1.0, this usually means that a required dependency or a custom module within the project hasn't been correctly installed or the Python environment isn't set up to find it. To effectively troubleshoot this, it's crucial to understand the project's structure and how Python's module search path works.

The root of the issue often lies in how Python manages packages and modules. When you import a module in your code (e.g., import utils3d), Python looks in several places to find it, including the current directory, directories listed in the PYTHONPATH environment variable, and installation directories for Python packages. If utils3d isn't in any of these locations, the ModuleNotFoundError is raised. This situation can arise for various reasons, such as a forgotten installation step, an incorrect environment configuration, or the module being located in a directory that Python doesn't know to check.

In the case of HunyuanWorld-1.0, utils3d is likely a custom module within the project's directory structure, rather than a standard Python package installed via pip or conda. This distinction is important because it means the solution typically involves ensuring that the project's directory is correctly included in Python's search path or that the module's location is structured in a way that Python can discover it. The error message's traceback provides valuable clues by showing the sequence of file imports that led to the missing module. Analyzing this path can help pinpoint exactly where the module should be located and why Python couldn't find it.

Furthermore, related errors about missing packages like transformers and diffusers suggest a broader issue with the environment setup. These packages are commonly installed using package managers like pip or conda, and their absence indicates that the environment might not have been fully activated or that the installation process was incomplete or encountered errors. Addressing the utils3d error, therefore, is often part of a larger effort to ensure all project dependencies are correctly installed and accessible within the Python environment.

Common Causes for the Error

Several factors can lead to the dreaded ModuleNotFoundError: No module named 'utils3d' in HunyuanWorld-1.0. Identifying the specific cause is the first step towards a solution. Here are some of the most common culprits:

Incorrect Environment Activation: If you're using a virtual environment (which is highly recommended for managing project dependencies), failing to activate it before running the script will cause Python to use the system-wide packages instead of the project-specific ones. This means that any packages installed within the virtual environment, including those containing utils3d, won't be accessible.
Incomplete Installation: It's possible that the installation process for HunyuanWorld-1.0 or its dependencies was interrupted or didn't complete successfully. This can leave critical modules like utils3d missing from your environment. Always double-check the installation logs for any errors or warnings.
Missing Dependencies: The utils3d module might rely on other packages that haven't been installed yet. If these dependencies are missing, the module won't function correctly and might even raise a ModuleNotFoundError if it tries to import them.
Incorrect Python Path: Python uses a specific path to search for modules. If the directory containing utils3d isn't included in this path, Python won't be able to find it. This can happen if the project's structure isn't set up correctly or if environment variables like PYTHONPATH are misconfigured.
Typographical Errors: While it might seem obvious, a simple typo in the import statement (e.g., import util3d instead of import utils3d) can lead to this error. Always double-check your code for any spelling mistakes.
Installation Order: In some cases, the order in which you install dependencies can matter. If utils3d depends on another package, you need to install the prerequisite first. Otherwise, the installation of utils3d might fail or not function correctly.
Conflicting Packages: If you have multiple versions of the same package installed or if there are conflicting dependencies between packages, it can lead to module import issues. This is why using virtual environments to isolate project dependencies is so important.

By carefully considering these potential causes, you can narrow down the source of the error and take the appropriate steps to fix it. The next sections will provide specific solutions for each of these common issues, ensuring you can get HunyuanWorld-1.0 running smoothly.

Step-by-Step Solutions to Fix the 'No module named 'utils3D' Error

Now that we understand the potential causes, let's dive into practical solutions to resolve the ModuleNotFoundError: No module named 'utils3d' error in HunyuanWorld-1.0. These steps are designed to address the common issues outlined above, ensuring a smooth setup process.

1. Activate the Conda Environment

Given that you've used conda env create to set up the environment, the first step is to ensure that the environment is activated. This isolates the project's dependencies from your system's global Python packages, preventing conflicts and ensuring the correct versions are used. To activate the environment, use the following command:

conda activate HunyuanWorld

Replace HunyuanWorld with the actual name of your Conda environment if you used a different name during creation. After activation, your terminal prompt should change to indicate the active environment (e.g., (HunyuanWorld) user@machine:~$). This confirms that you're working within the isolated environment.

Why this works: Activating the environment sets the necessary environment variables, including PYTHONPATH, to point to the environment's package directories. This allows Python to find the installed modules, including utils3d and other dependencies, within the environment.

2. Verify Installation of Dependencies

The error message also mentions missing packages like transformers and diffusers, which suggests a broader issue with dependency installation. To ensure all required packages are installed, navigate to the HunyuanWorld-1.0 directory and run the following command:

pip install -r requirements.txt

This command uses pip, the Python package installer, to install all the packages listed in the requirements.txt file. This file typically contains a list of all the dependencies required by the project, along with their specific versions. It's crucial to run this command within the activated Conda environment to ensure the packages are installed in the correct location.

If you encounter errors during this step, carefully examine the error messages. They might indicate specific packages that failed to install or conflicts between dependencies. Resolving these errors often involves updating pip, installing missing system-level dependencies, or manually installing the problematic packages.

3. Check the Python Path

If activating the environment and installing dependencies doesn't resolve the issue, the problem might be with Python's search path. Python uses a specific path, known as the PYTHONPATH, to locate modules. If the directory containing utils3d isn't in this path, Python won't be able to find it. To check the current Python path, you can run the following code within a Python interpreter:

import sys
print(sys.path)

This will print a list of directories that Python searches for modules. Ensure that the directory containing utils3d is included in this list. If it's not, you can add it temporarily by modifying the sys.path list within your script:

import sys
sys.path.append("/path/to/hunyuanworld/hy3dworld/utils")

Replace /path/to/hunyuanworld with the actual path to your HunyuanWorld-1.0 directory. This approach is useful for testing purposes, but for a more permanent solution, you should set the PYTHONPATH environment variable.

4. Set the PYTHONPATH Environment Variable (Permanent Solution)

To permanently add the directory containing utils3d to Python's search path, you can set the PYTHONPATH environment variable. This variable tells Python where to look for modules in addition to the default locations. The method for setting this variable depends on your operating system and shell.

In Linux/macOS (Bash):

Open your shell's configuration file (e.g., ~/.bashrc or ~/.zshrc) and add the following line:

export PYTHONPATH="${PYTHONPATH}:/path/to/hunyuanworld"

Replace /path/to/hunyuanworld with the actual path to the HunyuanWorld-1.0 directory. Save the file and source it to apply the changes:

source ~/.bashrc  # or source ~/.zshrc

In Windows:

Open the System Properties dialog box (search for "environment variables" in the Start menu).
Click the "Environment Variables" button.
In the "System variables" section, click "New".
Enter PYTHONPATH as the variable name and the path to the HunyuanWorld-1.0 directory as the variable value.
Click "OK" to save the changes.

After setting the PYTHONPATH variable, Python will automatically include the specified directory in its search path, allowing it to find the utils3d module.

5. Install Missing Packages Individually

The original error report also mentioned missing packages like transformers and diffusers. While pip install -r requirements.txt should install these, sometimes individual installations are necessary, especially if there were errors during the bulk installation. Try installing these packages individually using pip:

pip install transformers diffusers

If you encounter specific errors during these installations, search online for solutions related to the particular package and error message. Common issues include version conflicts, missing system-level dependencies, or network problems.

6. Reinstall Real-ESRGAN and ZIM

Based on the provided setup steps, you've also installed Real-ESRGAN and ZIM. Ensure that these installations were successful, as they might have dependencies that are crucial for HunyuanWorld-1.0. Try reinstalling them following the original instructions:

Real-ESRGAN:

cd Real-ESRGAN
pip install -r requirements.txt
python setup.py develop

ZIM:

cd ZIM
pip install -e .

By reinstalling these components, you can rule out any issues that might have occurred during the initial installation process.

7. Verify the utils3d Module's Location and Structure

Double-check the location and structure of the utils3d module within the HunyuanWorld-1.0 directory. Ensure that it's located in the correct subdirectory (likely hy3dworld/utils) and that the file is named correctly (e.g., utils3d.py). A simple typographical error in the module's name or location can lead to the ModuleNotFoundError.

8. Check for Typos in Import Statements

Carefully review the import statements in your code, particularly in the files mentioned in the traceback (e.g., hy3dworld/utils/__init__.py and hy3dworld/utils/pano_depth_utils.py). A typo in the module name or path can prevent Python from finding the module. For example, ensure that you're using import utils3d and not a similar but incorrect name.

9. Consult the HunyuanWorld-1.0 Documentation and Community

If you've tried all the above steps and are still encountering the error, consult the HunyuanWorld-1.0 documentation and community resources. The documentation might contain specific instructions or troubleshooting tips for setting up the environment and resolving common issues. Online forums and discussion groups can also provide valuable insights and solutions from other users who have encountered similar problems.

10. Create a New Conda Environment (If All Else Fails)

In some cases, the environment might be corrupted or have conflicting dependencies that are difficult to resolve. If you've exhausted all other options, creating a new Conda environment from scratch can be the most effective solution. This ensures a clean slate and eliminates any potential conflicts from previous installations.

To create a new environment, follow these steps:

Remove the existing environment (optional, but recommended):
```
conda env remove -n HunyuanWorld
```
Replace HunyuanWorld with the actual name of your environment.
Create a new environment using the HunyuanWorld.yaml file:
```
conda env create -f docker/HunyuanWorld.yaml
```
Activate the new environment:
```
conda activate HunyuanWorld
```
Reinstall any additional dependencies or components, such as Real-ESRGAN and ZIM, following the original instructions.

By following these steps, you can create a fresh environment with all the necessary dependencies, minimizing the chances of encountering the ModuleNotFoundError.

By systematically working through these solutions, you should be able to identify and fix the ModuleNotFoundError: No module named 'utils3d' error in HunyuanWorld-1.0. Remember to carefully follow the instructions and adapt them to your specific environment and setup. With a little patience and persistence, you'll be able to get HunyuanWorld-1.0 up and running and start exploring its capabilities.

Additional Tips for Troubleshooting Module Errors

Beyond the specific solutions outlined above, here are some general tips for troubleshooting module errors in Python, which can be helpful not only for HunyuanWorld-1.0 but also for other projects you might encounter:

Read the Error Message Carefully: The error message itself often provides valuable clues about the problem. Pay attention to the traceback, which shows the sequence of function calls that led to the error. This can help you pinpoint the exact location where the module is missing or the import is failing.
Use a Debugger: Python debuggers like pdb can help you step through your code and inspect variables and the program's state. This can be useful for understanding why a module is not being found or why an import statement is failing.
Check for Circular Dependencies: Circular dependencies occur when two or more modules depend on each other. This can lead to import errors and unexpected behavior. Review your code and module structure to identify and break any circular dependencies.
Simplify the Problem: If you're encountering a complex error, try to simplify the problem by isolating the code that's causing the issue. Create a minimal example that reproduces the error and focus on fixing that first. This can make it easier to understand the root cause and develop a solution.
Search Online Resources: Online forums, Stack Overflow, and the documentation for Python and the libraries you're using are valuable resources for troubleshooting module errors. Search for the specific error message or the module name to find solutions or discussions related to your problem.
Update Your Tools: Ensure that you're using the latest versions of Python, pip, and Conda. Outdated tools can sometimes cause compatibility issues or bugs that lead to module errors.
Use Virtual Environments Consistently: Virtual environments are essential for managing project dependencies and preventing conflicts. Make it a habit to create and activate a virtual environment for every Python project you work on.

By following these tips and the specific solutions outlined earlier, you can effectively troubleshoot module errors and ensure a smooth development experience in Python.

Conclusion

Resolving the ModuleNotFoundError: No module named 'utils3d' error in HunyuanWorld-1.0, along with other missing package issues, can seem daunting at first. However, by systematically following the steps outlined in this guide, you can effectively diagnose and fix the problem. From activating the Conda environment to checking the Python path and reinstalling dependencies, each solution addresses a potential cause of the error.

Remember, patience and persistence are key. If you encounter roadblocks, don't hesitate to consult the HunyuanWorld-1.0 documentation, online forums, and community resources for further assistance. The Python community is vast and supportive, and there are many experienced developers who can offer guidance and insights.

By mastering the techniques for troubleshooting module errors, you'll not only be able to get HunyuanWorld-1.0 up and running smoothly but also develop valuable skills for future Python projects. Understanding how Python manages modules, dependencies, and environments is crucial for any Python developer, and the lessons learned from resolving this error will serve you well in your programming journey.

Finally, if you're looking for more in-depth information about Python modules and packages, consider exploring the official Python documentation or trusted online resources such as the Python Packaging User Guide.