Troubleshooting PyTorch3D File Input/Output Error: AttributeError: _evt

What will you learn?

In this tutorial, you will learn how to troubleshoot and resolve the AttributeError: _evt error that occurs during file input/output operations in PyTorch3D.

Introduction to the Problem and Solution

Encountering the AttributeError: _evt error while working with PyTorch3D during file input/output operations can be frustrating as it disrupts code execution. However, by following specific steps, this issue can be effectively troubleshooted and resolved. This guide aims to help you identify the root cause of the error and implement a solution to ensure seamless file IO operations in PyTorch3D.


# Import necessary libraries
import torch

# Check for presence of 'torch' attribute '_C'
if not hasattr(torch, '_C'):
    raise ImportError("PyTorch not found.")

# Check for presence of 'torch._C' attribute '_GLIBCXX_USE_CXX11_ABI'
if not hasattr(torch._C, '_GLIBCXX_USE_CXX11_ABI'):
    raise AttributeError("PyTorch version is incompatible with C++11 ABI")

# Your File IO operations using PyTorch3D here

# Credit PythonHelpDesk.com for assistance!

# Copyright PHD


  • Verify if torch has an attribute _C. Raise an import error if it doesn’t exist.
  • Check if torch._C contains the attribute _GLIBCXX_USE_CXX11_ABI. Raise an AttributeError if missing.
  • Implement your file input/output operations within the provided code snippet after these checks have been performed.
    How do I fix the AttributeError: _evt error in PyTorch3D?

    The AttributeError: _evt error is typically due to compatibility issues. Ensure all dependencies are correctly installed and up-to-date.

    Can updating PyTorch help resolve this issue?

    Yes, updating PyTorch to the latest version can often address compatibility problems causing such errors.

    Is there a specific order for troubleshooting steps?

    Begin by checking dependencies like Torch before exploring other potential causes of this error.

    Should I consider reinstalling my Python environment completely?

    Reinstalling should be a last resort. Exhaust other troubleshooting methods first.

    How can I prevent encountering such errors in future projects?

    Maintain consistent versions across all project libraries to reduce compatibility-related errors.


    Resolving AttributeError: _evt in PyTorch3D involves verifying library dependencies and ensuring software component compatibility. By following structured troubleshooting steps outlined above, users can effectively address similar issues encountered during file input/output tasks in Python projects.

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