Cannot resolve path in Flask application running on WSGI/Apache [duplicate] - flask

Question

This question already has an answer here:
Refering to a directory in a Flask app doesn't work unless the path is absolute
(1 answer)
Closed 5 years ago.
I am trying to deploy a FLASK application in Ubuntu VPS using wsgi but I get an Internal server error. Checking the apache.log gives me following error:
No such file or directory: 'files/filesystem/filesystem.pickle'.
My directory tree looks like this under /var/www/:
dmft_seacrh_engine
files
filesystem
filesystem.pickle
dmft_search.wsgi
dmft_search
controllers
search.py
I am trying to open the filesystem.pickle inside search.py as following:
with open('/files/filesystem/filesystem.pickle', 'rb') as handle:
filesystem = pickle.load(handle)
Contents of the dmft.wsgi file are:
activate_this = '/opt/dmft/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/dmft_search_engine")
from dmft_search import app as application
This is how my conf file looks:
<VirtualHost *:80>
ServerName dmft_search_engine.com
WSGIScriptAlias / /var/www/dmft_search_engine/dmft_search.wsgi
<Directory /var/www/dmft_search_engine/dmft_search/>
Order allow,deny
Allow from all
</Directory>
Alias /static /var/www/dmft_search_engine/dmft_search/static
<Directory /var/www/dmft_search_engine/dmft_search/static/>
Order allow,deny
Allow from all
</Directory>
Alias /files /var/www/dmft_search_engine/files/$
<Directory /var/www/dmft_search_engine/files/>$
Order allow,deny
Allow from all
</Directory>
ErrorLog ${APACHE_LOG_DIR}/error.log
LogLevel warn
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>
Kindly help me out. I have also added an alias for /files in .conf file.
How can I resolve this?

Answer 1

The problem is that the app run in the context of root directory
so the correct path should be:
with open('var/www/html/dmft_search_engine/files/filesystem/filesystem.pickle', 'rb') as handle:
filesystem = pickle.load(handle)