Flask ImportError: No module named XXX问题解决
第一个flask项目，做一个简单的网址导航。部署项目后，浏览器访问报500错误。查看apache日志后，报错如下：
[Tue Jan 06 09:58:22 2015] [error] hello world [Tue Jan 06 09:58:22 2015] [error] [client 112.64.71.131] mod_wsgi (pid=31615): Target WSGI script '/var/www/qianshan/qianshan.wsgi' cannot be loaded as Python module. [Tue Jan 06 09:58:22 2015] [error] [client 112.64.71.131] mod_wsgi (pid=31615): Exception occurred processing WSGI script '/var/www/qianshan/qianshan.wsgi'. [Tue Jan 06 09:58:22 2015] [error] [client 112.64.71.131] Traceback (most recent call last): [Tue Jan 06 09:58:22 2015] [error] [client 112.64.71.131] File "/var/www/qianshan/qianshan.wsgi", line 12, in项目结构[Tue Jan 06 09:58:22 2015] [error] [client 112.64.71.131] from qianshan import app as application [Tue Jan 06 09:58:22 2015] [error] [client 112.64.71.131] File "/var/www/qianshan/__init__.py", line 4, in [Tue Jan 06 09:58:22 2015] [error] [client 112.64.71.131] import extras [Tue Jan 06 09:58:22 2015] [error] [client 112.64.71.131] ImportError: No module named extras
qianshan ├── config.ini ├── extraModules.py ├── extras.py ├── __init__.py ├── qianshan.wsgi ├── static ├── templates ├── test.py └── venvinit.py代码
from flask import Flask
from flask import render_template
import extraModules
import extras#如果没有这句无报错正常运行，只有一些静态资源没拉到，可能是其他问题
import ConfigParser
import codecs
import logging
logging.basicConfig(filename='qianshan.log', level=logging.INFO)
logging.info('Started')
app = Flask(__name__)
logging.info('App established')
@app.route("/")
def index():
return render_template('index.html')extras.py是实际我想要导入的模块，里面有两个我需要的类；extraModules是测试模块，import extraModules是成功的，apache日志的第一行也打出来了；他们的代码分别如下：
# Filename : extras.py
class Block:
def setNo(self, no):
self.no = int(no)
def getNo(self):
return self.no
def setName(self, name):
self.name = name
def getName(self):
return self.name
def setPriority(self, priority):
self.priority = int(priority)
def getPriority(self):
return self.priority
def setHotKeyAsc(self, hotKeyAsc):
self.hotKeyAsc = hotKeyAsc
def getHotKeyAsc(self):
return self.hotKeyAsc
def setElement(self, equation):
s = equation.split(':')
if(s[0] == 'no'):
self.setNo(s[1])
elif(s[0] == 'name'):
self.setName(s[1])
elif(s[0] == 'priority'):
self.setPriority(s[1])
elif(s[0] == 'hot_key_asc'):
self.setHotKeyAsc(s[1])
class Website:
def setNo(self, no):
self.no = int(no)
def getNo(self):
return self.no
def setName(self, name):
self.name = name
def getName(self):
return self.name
def setUrl(self, url):
self.url = url
def getUrl(self):
return self.url
def setIcon(self, icon):
self.icon = icon
def getIcon(self):
return self.icon
def setBlockNo(self, blockNo):
self.blockNo = int(blockNo)
def setPriority(self, priority):
self.priority = int(priority)
def getPriority(self):
return self.priority
def setHotKeyAsc(self, hotKeyAsc):
self.hotKeyAsc = hotKeyAsc
def getHotKeyAsc(self):
return self.hotKeyAsc
def setElement(self, equation):
s = equation.split(':')
if(s[0] == 'no'):
self.setNo(s[1])
elif(s[0] == 'name'):
self.setName(s[1])
elif(s[0] == 'url'):
self.setUrl(s[1])
elif(s[0] == 'icon'):
self.setIcon(s[1])
elif(s[0] == 'priority'):
self.setPriority(s[1])
elif(s[0] == 'hot_key_asc'):
self.setHotKeyAsc(s[1])
if __name__ == '__main__':
block = Block()
website = Website()extraModules.py代码如下：
# Filename : extraModules.py print 'hello world'其他背景信息： 项目部署在digital ocean的ubuntu12.x主机上，python版本2.7.3. 还请指导下，是不是extras.py有什么地方大意了，小弟新学python不久，请多敲打点拨 谢谢1L和2L前辈的指点啊！白天一直在上课，以下为1月7日晚更新，我把wsgi以及virtual host的配置也发一下，wsgi中是有配置/var/www/qianshan/为sys.path的。 qianshan.wsgi如下：
#!/usr/bin/python activate_this = '/var/www/qianshan/venv/bin/activate_this.py' execfile(activate_this, dict(__file__=activate_this)) import sys import logging logging.basicConfig(stream=sys.stderr) sys.path.insert(0,'/var/www/qianshan/') sys.path.insert(1,'/var/www/') from qianshan import app as application application.secret_key = 'Add your secret key'Virtual Host配置:
我会按照1L和2L的方法试试，如果不行再在这里说 问题解决如下： 1.首先确认是文件的权限问题。和import的语法无关。 下图中可以看到目前项目根目录下各个文件的权限，otherModules（就是之前的extras）对root所在的用户组没有读权限。ServerName qianshan.co ServerAdmin spark@qianshan.co WSGIScriptAlias / /var/www/qianshan/qianshan.wsgi Order allow,deny Allow from all Alias /static /var/www/qianshan/static Order allow,deny Allow from all ErrorLog ${APACHE_LOG_DIR}/error.log LogLevel warn CustomLog ${APACHE_LOG_DIR}/access.log combined
-rwx------ 1 root root 9091 Jan 3 09:27 config.ini -rwxr--r-- 1 root root 404 Jan 7 22:58 __init__.py -rwx------ 1 root root 2316 Jan 7 23:07 otherModules.py -rwxr--r-- 1 root root 360 Jan 5 23:34 qianshan.wsgi drwxr-xr-x 2 root root 4096 Jan 3 09:08 static drwxr-xr-x 2 root root 4096 Jan 3 08:51 templates -rw-r--r-- 1 root root 262 Jan 7 23:05 testModule.py -rwx------ 1 root root 1716 Jan 3 09:36 test.py drwxr-xr-x 6 root root 4096 Jan 3 08:05 venvchmod调整权限后，权限如下，项目可以正常访问，不再报错
-rwxr--r-- 1 root root 9091 Jan 3 09:27 config.ini -rwxr--r-- 1 root root 404 Jan 7 22:58 __init__.py -rwxr--r-- 1 root root 2316 Jan 7 23:07 otherModules.py -rwxr--r-- 1 root root 360 Jan 5 23:34 qianshan.wsgi drwxrwxr-x 2 root root 4096 Jan 3 09:08 static drwxrwxr-x 2 root root 4096 Jan 3 08:51 templates -rw-r--r-- 1 root root 262 Jan 7 23:05 testModule.py -rwxr--r-- 1 root root 1716 Jan 3 09:36 test.py drwxr-xr-x 6 root root 4096 Jan 3 08:05 venv大体过程就这样！ 原文地址：分享原文
