python - 为什么 setuptools 不复制子文件夹中的模块？

Question

我有一个名为 hwrt 的项目(参见 GitHub、PyPI)，其结构如下:

.
├── bin
├── docs
├── hwrt
│   ├── datasets
│   │   ├── crohme_eval.py
│   │   ├── __init__.py
│   │   ├── inkml.py
│   │   ├── README.md
│   │   └── results.csv
│   ├── __init__.py
│   ├── misc: Not important for this question
│   ├── selfcheck.py
│   ├── serve.py
│   ├── ... (more Python modules)
│   ├── templates: Not important for this question
│   └── view.py
├── LICENSE
├── Makefile
├── MANIFEST.in
├── README.md
├── requirements.txt
├── setup.cfg
├── setup.py
└── tests: Not important for this question

我的问题是

$ python
>>> from hwrt.datasets import inkml
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named datasets

root/of/project$ python
>>> from hwrt.datasets import inkml
>>> 

请注意，datasets 文件夹中有 __init__.py。所以这不是问题。一个(那个？)问题似乎是 setuptools 不复制数据集文件夹。除了将 __init__.py 放入文件夹之外，我还需要做任何其他事情吗？

设置.py

try:
    from setuptools import setup
except ImportError:
    from distutils.core import setup

config = {
    'name': 'hwrt',
    'version': '0.1.217',
    'author': 'Martin Thoma',
    'author_email': 'info@martin-thoma.de',
    'maintainer': 'Martin Thoma',
    'maintainer_email': 'info@martin-thoma.de',
    'packages': ['hwrt'],
    'scripts': ['bin/hwrt', 'bin/backup.py',
                'bin/test.py', 'bin/train.py',
                'bin/create_testset_online_once.py'],
    'package_data': {'hwrt': ['templates/*', 'misc/*']},
    'platforms': ['Linux', 'MacOS X', 'Windows'],
    'url': 'https://github.com/MartinThoma/hwrt',
    'license': 'MIT',
    'description': 'Handwriting Recognition Tools',
    'long_description': ("A tookit for handwriting recognition. It was "
                         "developed as part of the bachelors thesis of "
                         "Martin Thoma."),
    'install_requires': [
        "argparse",
        "theano",
        "nose",
        "natsort",
        "PyYAML",
        "matplotlib",
        "nntoolkit",
        "h5py",
        "flask",
        "flask-bootstrap",
        "requests",
        "six"
    ],
    'keywords': ['HWRT', 'recognition', 'handwriting', 'on-line'],
    'download_url': 'https://github.com/MartinThoma/hwrt',
    'classifiers': ['Development Status :: 3 - Alpha',
                    'Environment :: Console',
                    'Intended Audience :: Developers',
                    'Intended Audience :: Science/Research',
                    'License :: OSI Approved :: MIT License',
                    'Natural Language :: English',
                    'Programming Language :: Python :: 2.7',
                    'Programming Language :: Python :: 3',
                    'Programming Language :: Python :: 3.3',
                    'Programming Language :: Python :: 3.4',
                    'Topic :: Scientific/Engineering :: Artificial Intelligence',
                    'Topic :: Software Development',
                    'Topic :: Utilities'],
    'zip_safe': False,
    'test_suite': 'nose.collector'
}

setup(**config)

Answer 1

默认情况下，setup() 中的“packages”关键字不包括所有子包。它只查找包含在与 setup.py 相同的文件夹中的包。您只需将“hwrt.datasets”添加到您的包列表即可。

但是，如果您决定向项目中添加更多包，那么以后可能会遇到麻烦，因此典型的用例是使用辅助函数 find_packages。

例如:

from setuptools import setup, find_packages

setup(
    # ...
    packages=find_packages(".")
)

参见 http://setuptools.readthedocs.io/en/latest/setuptools.html#using-find-packages