Question

我在apache2 / flask服务器上有一个文件夹结构：

/var/www/myapp
/var/www/myapp/routing.py
/var/www/myapp/__init__.py
/var/www/wsgi-scripts/myapp.wsgi

myapp中的我的应用程序文件（routing.py）如下：

from flask import Flask, render_template
app = Flask(__name__)


@app.route('/')
def welkom():
    return render_template('welkom.html')


if __name__ == '__main__':
    app.debug = 'True'
    app.run()

我在wsgi-scripts中的myapp.wsgi是这样的：

import sys
sys.path.insert(0, '/var/www/myapp')
from myapp import routing as application

然而，当我加载页面时，这是在我的日志中：

[Fri Mar 15 08:06:32 2013] [error] [client 192.168.1.11] mod_wsgi (pid=23574): Target WSGI script '/var/www/wsgi-scripts/myapp.wsgi' cannot be loaded as Python module.
[Fri Mar 15 08:06:32 2013] [error] [client 192.168.1.11] mod_wsgi (pid=23574): Exception occurred processing WSGI script '/var/www/wsgi-scripts/myapp.wsgi'.
[Fri Mar 15 08:06:32 2013] [error] [client 192.168.1.11] Traceback (most recent call last):
[Fri Mar 15 08:06:32 2013] [error] [client 192.168.1.11]   File "/var/www/wsgi-scripts/myapp.wsgi", line 3, in <module>
[Fri Mar 15 08:06:32 2013] [error] [client 192.168.1.11]     import myapp.routing as application
[Fri Mar 15 08:06:32 2013] [error] [client 192.168.1.11] ImportError: No module named myapp.routing
[Fri Mar 15 08:06:32 2013] [error] [client 192.168.1.11] mod_wsgi (pid=23575): Target WSGI script '/var/www/wsgi-scripts/myapp.wsgi' cannot be loaded as Python module.
[Fri Mar 15 08:06:32 2013] [error] [client 192.168.1.11] mod_wsgi (pid=23575): Exception occurred processing WSGI script '/var/www/wsgi-scripts/myapp.wsgi'.
[Fri Mar 15 08:06:32 2013] [error] [client 192.168.1.11] Traceback (most recent call last):
[Fri Mar 15 08:06:32 2013] [error] [client 192.168.1.11]   File "/var/www/wsgi-scripts/myapp.wsgi", line 3, in <module>
[Fri Mar 15 08:06:32 2013] [error] [client 192.168.1.11]     import myapp.routing as application
[Fri Mar 15 08:06:32 2013] [error] [client 192.168.1.11] ImportError: No module named myapp.routing
[Fri Mar 15 08:06:33 2013] [error] [client 192.168.1.11] mod_wsgi (pid=23577): Target WSGI script '/var/www/wsgi-scripts/myapp.wsgi' cannot be loaded as Python module.
[Fri Mar 15 08:06:33 2013] [error] [client 192.168.1.11] mod_wsgi (pid=23577): Exception occurred processing WSGI script '/var/www/wsgi-scripts/myapp.wsgi'.
[Fri Mar 15 08:06:33 2013] [error] [client 192.168.1.11] Traceback (most recent call last):
[Fri Mar 15 08:06:33 2013] [error] [client 192.168.1.11]   File "/var/www/wsgi-scripts/myapp.wsgi", line 3, in <module>
[Fri Mar 15 08:06:33 2013] [error] [client 192.168.1.11]     import myapp.routing as application
[Fri Mar 15 08:06:33 2013] [error] [client 192.168.1.11] ImportError: No module named myapp.routing
[Fri Mar 15 08:06:33 2013] [error] [client 192.168.1.11] mod_wsgi (pid=23573): Target WSGI script '/var/www/wsgi-scripts/myapp.wsgi' cannot be loaded as Python module.
[Fri Mar 15 08:06:33 2013] [error] [client 192.168.1.11] mod_wsgi (pid=23573): Exception occurred processing WSGI script '/var/www/wsgi-scripts/myapp.wsgi'.
[Fri Mar 15 08:06:33 2013] [error] [client 192.168.1.11] Traceback (most recent call last):
[Fri Mar 15 08:06:33 2013] [error] [client 192.168.1.11]   File "/var/www/wsgi-scripts/myapp.wsgi", line 3, in <module>
[Fri Mar 15 08:06:33 2013] [error] [client 192.168.1.11]     import myapp.routing as application
[Fri Mar 15 08:06:33 2013] [error] [client 192.168.1.11] ImportError: No module named myapp.routing

WSGI工作正常，我用testapp验证了这一点。出了什么问题？

Answer 1

因此，您打算从包routing导入模块myapp并将其称为application。

这与您的结构不符。如果您的路径中有/var/www/myapp，则必须直接导入模块routing。
应用程序不是模块，它是模块中定义的可调用程序。看来你必须要做像
这样的事情
```
def theapp(<don't remember the argumets by heart>):
    app.debug = 'True'
    app.run()
```
然后wsgi脚本可以做
```
from routing import theapp as application
```
但也许我错了，你只需做
```
from routing import app as application
```
因为我没有使用Flask的经验。

Answer 2

我遇到了同样的问题，使用以下代码解决了这个问题：

ALLDIRS = ['/var/www/MarkerDB/']

import sys 
import site 

# Remember original sys.path.
prev_sys_path = list(sys.path) 

# Add each new site-packages directory.
for directory in ALLDIRS:
  site.addsitedir(directory)

# Reorder sys.path so new directories at the front.
new_sys_path = [] 
for item in list(sys.path): 
    if item not in prev_sys_path: 
        new_sys_path.append(item) 
        sys.path.remove(item) 
sys.path[:0] = new_sys_pat

来源：http://code.google.com/p/modwsgi/wiki/VirtualEnvironments#Application_Environments

从wsgi导入python失败

2 个答案: