python之包setup.py和Flask目录结构

更新:添加了setup.py内容。

我有以下目录结构:

setup.py 
packagename/ 
    __init__.py 
    useless_file.py 

在 __init__.py 中，我有以下内容:

from flask import Flask 
from flask.ext.sqlalchemy import SQLAlchemy 
 
db = SQLAlchemy() 
 
CONFIG_FILENAME = "packagename.settings" 
 
 
def create_app(): 
    app = Flask(__name__) 
    app.config.from_object(CONFIG_FILENAME) 
 
    db.init_app(app) 
 
    app.register_blueprint(sms_testing) 
 
    return app 

我关注了 Flask 的 recommended package structure .

这是setup.py:

import os 
from setuptools import setup 
 
requires = ( 
        "flask", 
        "flask-sqlalchemy", 
        "requests>=0.13.6", 
        "python-dateutil>=1.5", 
        "twilio", 
        "selenium", 
        ) 
 
def read(fname): 
    return open(os.path.join(os.path.dirname(__file__), fname)).read() 
 
setup( 
    name = "Package Name", 
    version = "0.0.1", 
    author = "Charles-Axel Dein", 
    author_email = "ca@d3in.org", 
    description = ("useless"), 
    license = "BSD", 
    keywords = "example documentation tutorial", 
    url = "http://packages.python.org/an_example_pypi_project", 
    packages=['package_name',], 
    # namespace_packages = ['package_name'], 
    install_requires=requires, 
    long_description=read('README.md'), 
    classifiers=[ 
        "Development Status :: 3 - Alpha", 
        "Topic :: Utilities", 
        "License :: OSI Approved :: BSD License", 
    ], 
) 

当我执行 python setup.py develop 时，我得到:

Traceback (most recent call last): 
  File "setup.py", line 2, in <module> 
    from setuptools import setup 
  File "/.virtualenvs/api/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/__init__.py", line 2, in <module> 
    # The Python Imaging Library. 
  File "/.virtualenvs/api/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/extension.py", line 2, in <module> 
  File "/.virtualenvs/api/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/dist.py", line 6, in <module> 
  File "/.virtualenvs/api/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/setuptools/command/sdist.py", line 5, in <module> 
  File "/.virtualenvs/api/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/pkg_resources.py", line 2623, in <module> 
    if not len(req.specs): 
  File "/.virtualenvs/api/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/pkg_resources.py", line 679, in subscribe 
    `requirements` must be a string or a (possibly-nested) sequence 
  File "/.virtualenvs/api/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/pkg_resources.py", line 2623, in <lambda> 
    if not len(req.specs): 
  File "/.virtualenvs/api/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/pkg_resources.py", line 2172, in activate 
    return pv 
  File "/.virtualenvs/api/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/pkg_resources.py", line 1790, in declare_namespace 
    module.__path__ = []; _set_parent_ns(packageName) 
  File "/.virtualenvs/api/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg/pkg_resources.py", line 1761, in _handle_ns 
 
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/pkgutil.py", line 238, in load_module 
    mod = imp.load_module(fullname, self.file, self.filename, self.etc) 
  File "/package_name/__init__.py", line 2, in <module> 
    import flask 
  File "/.virtualenvs/api/lib/python2.7/site-packages/flask/exthook.py", line 86, in load_module 
    raise ImportError('No module named %s' % fullname) 
ImportError: No module named flask 

(我编辑了文件夹)

我想这是合乎逻辑的，因为 setuptools 正在尝试导入我的包，它导入了 packagename/__init__.py，在它有机会之前就有了这个 import flask安装它。

问题是，我需要 __init__.py 中的这个import flask 来创建数据库。

你会推荐什么？

谢谢!

中国

请您参考如下方法:

我个人不喜欢python setup.py develop，你试过了吗？

% pip install -e . 

当前目录是包含您的setup.py 的目录。它类似于 develop 但会安装所有必需的包。