mod_wsgi无法识别__init__.py

Question

尝试使用apache2部署一个简单的烧瓶应用程序时遇到问题。网站结构如下：

flaskapp/
├── assets
├── conf.d
├── config
    └── __init__.py # Where the configuration is
├── deploy
├── modulos
├── requirements
├── templates
└── vistas

每当我尝试加载页面时，都会收到以下错误：

[Mon Oct 05 18:40:27.875240 2015] [:error] [pid 20674:tid 140375715673856] [remote 10.0.2.2:10690] mod_wsgi (pid=20674): Target WSGI script '/var/www/flaskapp/application.wsgi' cannot be loaded as Python module.
[Mon Oct 05 18:40:27.875565 2015] [:error] [pid 20674:tid 140375715673856] [remote 10.0.2.2:10690] mod_wsgi (pid=20674): Exception occurred processing WSGI script '/var/www/flaskapp/application.wsgi'.
[Mon Oct 05 18:40:27.875723 2015] [:error] [pid 20674:tid 140375715673856] [remote 10.0.2.2:10690] Traceback (most recent call last):
[Mon Oct 05 18:40:27.875886 2015] [:error] [pid 20674:tid 140375715673856] [remote 10.0.2.2:10690]   File "/var/www/flaskapp/application.wsgi", line 12, in <module>
[Mon Oct 05 18:40:27.876195 2015] [:error] [pid 20674:tid 140375715673856] [remote 10.0.2.2:10690]     import vistas
[Mon Oct 05 18:40:27.876358 2015] [:error] [pid 20674:tid 140375715673856] [remote 10.0.2.2:10690]   File "/var/www/flaskapp/vistas/__init__.py", line 5, in <module>
[Mon Oct 05 18:40:27.876811 2015] [:error] [pid 20674:tid 140375715673856] [remote 10.0.2.2:10690]     from .index import blueprint as inicio
[Mon Oct 05 18:40:27.876959 2015] [:error] [pid 20674:tid 140375715673856] [remote 10.0.2.2:10690]   File "/var/www/flaskapp/vistas/index.py", line 4, in <module>
[Mon Oct 05 18:40:27.877477 2015] [:error] [pid 20674:tid 140375715673856] [remote 10.0.2.2:10690]     from modulos import api
[Mon Oct 05 18:40:27.877623 2015] [:error] [pid 20674:tid 140375715673856] [remote 10.0.2.2:10690]   File "/var/www/flaskapp/modulos/__init__.py", line 4, in <module>
[Mon Oct 05 18:40:27.877965 2015] [:error] [pid 20674:tid 140375715673856] [remote 10.0.2.2:10690]     from config import conf
[Mon Oct 05 18:40:27.878137 2015] [:error] [pid 20674:tid 140375715673856] [remote 10.0.2.2:10690] ImportError: cannot import name conf

做了一些调试我发现了以下情况。当我在虚拟机中导入配置时：

>>> import config
>>> config
<module 'config' from '/var/www/flaskapp/config'>

当我在本地机器上这样做时：

>>> import config
>>> config
<module 'config' from '/etc/flaskapp/config/__init__.py'>

我做错了什么？这是我的apache配置文件：

<VirtualHost *:80>
    ServerName testapp.com
    ServerAlias flask.local

    WSGIDaemonProcess flaskapp display-name=www-data user=www-data \
        group=www-data processes=1 threads=5 \
        home=/var/www/flaskapp \
        python-path=/var/www/flaskapp:/opt/env_flaskapp/lib/python2.7/site-packages
    WSGIProcessGroup flasskapp
    WSGIScriptAlias / /var/www/flaskapp/application.wsgi

    <Directory /var/www/flaskapp>
        Require all granted
    </Directory>
</VirtualHost>

更新：此处的__init__.py除外，显示失败的地方

# -*- coding: utf-8 -*-
import os, yaml, datetime, locale
from flask import Flask
from flask.ext.cache import Cache
from flask.ext.bcrypt import Bcrypt
from flask_mail import Mail
from hashids import Hashids

archivo = open('/opt/carrito/conf.d/config.yaml', 'r')

conf = yaml.load(archivo)

STATIC_DIR = '%s/%s' % (conf['dirs']['full_path'],
                        conf['dirs']['static_dir'])
TEMPLATE_DIR = '%s/%s' % (conf['dirs']['full_path'],
                          conf['dirs']['template_dir'])

app = Flask(__name__, static_folder=STATIC_DIR,
                      template_folder=TEMPLATE_DIR)