Import Error on deploying a flask app on apache

Question

I am trying to deploy a flask app on a VPS using WSGI. I am not using a virtualenv, and pandas is installed on the system:

Python 2.7.15rc1 (default, Nov 12 2018, 14:31:15) [GCC 7.3.0] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import pandas >>> print 'Works!' Works! 

Still I get this error:

[Sat Jun 01 16:02:52.876184 2019] [wsgi:error] [pid 24086] [client 27.7.8.82:59860] mod_wsgi (pid=24086): Target WSGI script '/var/www/im/server.wsgi' cannot be loaded as Python module. [Sat Jun 01 16:02:52.876217 2019] [wsgi:error] [pid 24086] [client 27.7.8.82:59860] mod_wsgi (pid=24086): Exception occurred processing WSGI script '/var/www/im/server.wsgi'. [Sat Jun 01 16:02:52.876236 2019] [wsgi:error] [pid 24086] [client 27.7.8.82:59860] Traceback (most recent call last): [Sat Jun 01 16:02:52.876254 2019] [wsgi:error] [pid 24086] [client 27.7.8.82:59860] File "/var/www/im/server.wsgi", line 7, in <module> [Sat Jun 01 16:02:52.876278 2019] [wsgi:error] [pid 24086] [client 27.7.8.82:59860] from UI import app as application [Sat Jun 01 16:02:52.876286 2019] [wsgi:error] [pid 24086] [client 27.7.8.82:59860] File "/var/www/im/UI/__init__.py", line 3, in <module> [Sat Jun 01 16:02:52.876297 2019] [wsgi:error] [pid 24086] [client 27.7.8.82:59860] import pandas as pd [Sat Jun 01 16:02:52.876315 2019] [wsgi:error] [pid 24086] [client 27.7.8.82:59860] ImportError: No module named pandas 

Here is the WSGI file:

#!/usr/bin/python import sys import logging logging.basicConfig(stream=sys.stderr) sys.path.insert(0,"/var/www/im/") from UI import app as application application.secret_key = 'Add your secret key' 

can someone point out what is wrong? I am trying this on a Ubuntu 18.04.2 LTS.

Answer 1

Most likely you have one more Python interpreter installed on the box. To check that do the following:

• From server console run python and execute these command:

  import sys print sys.path 

• Create a test Flask app run.py below, place it into /var/www/im/ folder and edit WSGI file to load it: from run import app as application

  import sys from flask import Flask app = Flask(__name__) @app.route('/') def get_path(): return str(sys.path) 

• compare output from both