# ModuleNotFoundError: No module named 'h11.\_util'

**URL:** <https://community.openai.com/t/modulenotfounderror-no-module-named-h11-util/880968>\
**Category:** Bugs\
**Tags:** api\
**Created:** [July 25, 2024, 6:01pm UTC](https://community.openai.com/t/modulenotfounderror-no-module-named-h11-util/880968 "2024-07-25T18:01:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Caspero](https://avatars.discourse-cdn.com/v4/letter/c/8e8cbc/32.png) [@Caspero](https://community.openai.com/u/Caspero)\
**Post date:** [July 25, 2024, 6:01pm UTC](https://community.openai.com/t/modulenotfounderror-no-module-named-h11-util/880968/1 "2024-07-25T18:01:09Z")

</div>

I recently upgraded the openai Python module from an earlier version to 1.37

Now in python when I execute  
_from openai import OpenAI_

I get a bunch of errors culminating in “ModuleNotFoundError: No module named ‘h11.\_util’”

I tried to do the following but I still get that error:  
pip install --upgrade httpx httpcore h11

---

<div class="post-metadata">

**Author:** ![darcschnider](https://sea2.discourse-cdn.com/openai1/user_avatar/community.openai.com/darcschnider/32/190437_2.png) [@darcschnider](https://community.openai.com/u/darcschnider)\
**Post date:** [July 25, 2024, 6:34pm UTC](https://community.openai.com/t/modulenotfounderror-no-module-named-h11-util/880968/2 "2024-07-25T18:34:28Z")

</div>

It seems like you’re encountering a `ModuleNotFoundError` for the `h11._util` module after upgrading the OpenAI Python package to version 1.37. This issue likely arises because the new version of the OpenAI package has updated dependencies or changes that require different handling.

Here are a few steps to help resolve this issue:

1. **Check Dependencies** : The error indicates that there’s an issue with the `h11` library, which is a dependency for `httpx` and `httpcore`, used by the OpenAI library. Ensure all dependencies are properly installed and compatible. You can try reinstalling these dependencies with:

css

Copy code

```auto
pip install --upgrade httpx httpcore h11

```

1. **Environment Consistency** : Ensure that your Python environment is clean and consistent. Sometimes conflicts arise from having multiple versions of libraries installed. Consider using a virtual environment to isolate dependencies:

bash

Copy code

```auto
python -m venv myenv
source myenv/bin/activate # On Windows, use `myenv\Scripts\activate`
pip install openai

```

1. **Code Compatibility** : Upgrading the OpenAI package might introduce changes that are not backward compatible. Review your code, especially the parts interfacing with the OpenAI API, to ensure they align with the new version’s documentation. The changes could involve method names, parameters, or response formats.
2. **AI-Generated Code** : If you used AI tools to assist with coding, it’s possible they introduced or removed certain modules or lines that aren’t compatible with the latest library versions. Carefully review any AI-generated code and compare it with the official documentation or examples provided by OpenAI.
3. **Consult Documentation and Support** : Check the [OpenAI Python client library documentation](https://beta.openai.com/docs/) for any breaking changes or migration guides.