如何在CircleCI中识别要在python中设置本地模块的路径？

Question

我正在构建一个python模块。为了定义其路径，.pth文件的定义如下：

# creation of the virtual environment
python -v venv env

# activation of the newly creation virtual environment
source env/bin/activate

设置模块的路径（我的模块位于 packages/regression_model/regression_model），我创建了此.pth文件env/lib/python3.7/site-packages/regression_model.pth，其中包含：

# env/lib/python3.7/site-packages/regression_model.pth
../../../../packages/regression_model

现在，在项目中的任何位置，我都可以通过以下命令导入模块regression_model：

import regression_model

实际上，我的目标是使用CircleCI来部署我的项目。

CircleCI的配置如下：

version: 2
jobs:
  test_regression_model:
    working_directory: ~/project
    docker:
      - image: circleci/python:3.7.6
        environment: # environment variables for primary container
          PYTHONPATH: ~/project/packages/regression_model:~/project/packages/ml_api
    steps:
      - checkout
      - run:
          name: Runnning tests
          command: |
            virtualenv venv
            . venv/bin/activate
            pip install --upgrade pip
            pip install -r packages/regression_model/requirements.txt
            chmod +x ./scripts/fetch_kaggle_dataset.sh
            ./scripts/fetch_kaggle_dataset.sh
            python packages/regression_model/regression_model/train_pipeline.py
            py.test -vv packages/regression_model/tests

workflows:
  version: 2
  test-all:
    jobs:
      - test_regression_model

[问题我面对的是CircleCI指示无法导入我的模块

Traceback (most recent call last):
  File "packages/regression_model/regression_model/train_pipeline.py", line 4, in <module>
    from regression_model import pipeline
ModuleNotFoundError: No module named 'regression_model'

要解决该问题，必须完全像在本地一样定义到该模块regression_model的路径。然后的问题是：如何在CircleCI中定义路径？

我试图通过使用环境变量PYTHONPATH来实现，但是没有成功。

有什么建议吗？

Answer 1

我找到了解决方案。与在本地计算机上手动完成的操作类似，我只定义了2条命令行即可在CircleCI中完成：

echo "../../../../packages/regression_model" >> env/lib/python3.7/site-packages/extra.pth
echo "../../../../packages/ml_api" >> env/lib/python3.7/site-packages/extra.pth

并且在完整的yml文件下面，以防它可能对其他人有所帮助。

version: 2
jobs:
  test_regression_model:
    working_directory: ~/project
    docker:
      - image: circleci/python:3.7.6
    steps:
      - checkout
      - run:
          name: Runnning tests
          command: |
            virtualenv env
            . env/bin/activate
            pip install --upgrade pip
            pip install -r packages/regression_model/requirements.txt
            echo "../../../../packages/regression_model" >> env/lib/python3.7/site-packages/extra.pth
            echo "../../../../packages/ml_api" >> env/lib/python3.7/site-packages/extra.pth
            chmod +x ./scripts/fetch_kaggle_dataset.sh
            ./scripts/fetch_kaggle_dataset.sh
            sudo apt-get install unzip
            unzip  packages/regression_model/regression_model/datasets/house-prices-advanced-regression-techniques.zip -d packages/regression_model/regression_model/datasets/
            python packages/regression_model/regression_model/train_pipeline.py
            py.test -vv packages/regression_model/tests

workflows:
  version: 2
  test-all:
    jobs:
      - test_regression_model