This usually means the runtime where your flow is executed in Prefect Cloud doesn’t have the PyGithub package (or something is shadowing it). Quick checks: - Confirm you installed the correct package:

pip install PyGithub

(import remains

from github import Github

). - Make sure you don’t have a file or folder named

github.py

or

github/

in your project — that will shadow the PyGithub module. - Verify which work pool you’re using (Process, Docker, Kubernetes) — packaging differs per pool. How to fix by work pool (assuming Prefect 3.x): - Process work pool - Install PyGithub in the same environment where you run the worker:

pip install PyGithub
    prefect worker start --pool your-process-pool

- Restart the worker after installing. - Docker work pool - Add PyGithub to your image (recommended): - Put it in

requirements.txt

and rebuild/push your image. - If you use

prefect deploy

with

dockerfile: auto

, it will install from

requirements.txt

automatically. - Or install at runtime with job variables: - In `prefect.yaml`:

deployments:
      - name: your-deployment
        entrypoint: path/to/flow.py:flow_fn
        work_pool:
          name: your-docker-pool
          job_variables:
            env:
              EXTRA_PIP_PACKAGES: "PyGithub"

- Or set

EXTRA_PIP_PACKAGES

on the work pool’s base job template in the UI. - Kubernetes work pool - Same pattern as Docker: include PyGithub in the image (via requirements.txt) or set

EXTRA_PIP_PACKAGES: "PyGithub"

in job variables or the pool’s base job template. Helpful docs: - Docker deployments - Kubernetes deployments - Customize job variables - Run flows in local processes If you can share: - Your work pool type - How you’re deploying (prefect.yaml or

flow.deploy

) - Whether you’re building an image or relying on runtime installs …I can give you exact steps tailored to your setup.

You’ve installed both PyGithub and the unrelated package named

github

in your image. The

github

package shadows PyGithub’s module namespace and causes: ImportError: cannot import name 'Github' from 'github' In your Dockerfile, this part is the culprit:

... prefect_azure github && ...

Remove

github

and keep only

PyGithub

. Suggested Dockerfile (trimmed to the essentials you shared):

FROM prefecthq/prefect:3.2.14-python3.9

COPY . /opt/prefect/Scripts/
WORKDIR /opt/prefect/Scripts/

RUN pip install --no-cache-dir \
    prefect-snowflake \
    GitPython \
    PyGithub \
    "snowflake-connector-python[pandas]==4.0.0" \
    "pandas==2.3.3" \
    "numpy>=2.0,<3" \
    "pyarrow==21.0.0" \
    "prefect[shell]" \
    adlfs \
    s3fs \
    requests \
    pyodbc \
    prefect_azure \
  && apt-get update \
  && apt-get install -y unixodbc curl ca-certificates \
  && curl -sSL -o /usr/local/bin/kubectl https://dl.k8s.io/release/v1.30.0/bin/linux/amd64/kubectl \
  && chmod +x /usr/local/bin/kubectl

Notes: - Make sure your Dockerfile literally uses

numpy>=2.0,<3

(Slack often renders `>`/`<` as `>`/`<` in messages). - Also confirm there’s no

github.py

or

github/

folder in your project that could shadow PyGithub. Rebuild and push a fresh image (avoid cached layers), then update your deployment to use the new tag:

docker build --no-cache -t your-registry/your-image:fixed .
docker push your-registry/your-image:fixed

Update the deployment’s image to

your-registry/your-image:fixed

and re-run. Optional quick sanity check inside the container:

python -c "import github, sys; print('github path:', github.__file__); from github import Github; print('OK:', Github)"

If you’re building/pushing via Prefect (prefect.yaml or flow.deploy), let me know which you use and I can share the exact steps to propagate the new image tag.