Cannot import module 'applications.welcome.modules.pytz

[icodk]

What I did:

added

import pytz

in db.py in the welcome application 

The error:

<type 'exceptions.ImportError'> (ImportError("Cannot import module 'applications.welcome.modules.pytz'",), <traceback object at 0x7fc194275bd8>)

Environment:

2.16.1-stable+timestamp.2017.11.14.05.54.25

(Running on nginx/1.12.1, Python 2.7.14)

fresh web2py installation on Ubuntu 17.10 using the script: setup-web2py-nginx-uwsgi-ubuntu.sh

python version in terminal:

Python 2.7.14 (default, Sep 23 2017, 22:06:14)

[GCC 7.2.0] on linux2

Type "help", "copyright", "credits" or "license" for more information.

>>>

Any idea ?

[icodk]

SOLVED !

use:

sudo pip install pytz

and not

pip install pytz

if you install pytz using pip without sudo , it will be installed for the login user and will be inaccessible from uwsgi/nginx

Example:

yourname@yourserver:~$pip install pytz

will install it in

 /home/yourname/.local/lib/python2.7/site-packages/pytz/

you can check it by starting python, importing pytz and then typing pytz. This will show the complete path of the library.

>>>import pytz
>>> pytz
<module 'pytz' from '/home/yourname/.local/lib/python2.7/site-packages/pytz/__init__.pyc'>
>>>

while installing it with

sudo pip install pytz

will install it in :

<module 'pytz' from '/usr/local/lib/python2.7/dist-packages/pytz/__init__.pyc'>

[Neil]

I just had the same problem. I used the `umask` solution here:

https://stackoverflow.com/questions/36898474/how-to-install-a-module-for-all-users-with-pip-on-linux