I'm a student and the lab staff has set up permissions that won't students install software on the machines (or to our profiles).
I'm curious how I can develop Django application in a contained environment. I checked out the Django trunk to my Ubuntu home directory and added the bin path to my .bashrc. But when I try to use django-admin.py, an error occurs:
ImportError: No module named django.core
I'm quite confident this is simply a path issue. My real question is whether there's a proper to do self-contained development or if I need to manually add paths, and which if so.
In advance, thanks.
You can manually set the path:
import sys
sys.path.append('/home/kevin/dir_with_module')
You may also want to look into setting up a virtual environment. This article has good information: http://www.clemesha.org/blog/modern-python-hacker-tools-virtualenv-fabric-pip/
Related
I installed Python 2.7 on SLES 11 box that previously was running Python 2.6. To do so I used a script described in this post and run it as a root user. Everything went well but when it was done I discovered few issues:
No symbolic links were created and no path updated so I had to manually update the path to link to the new installation bin directory /opt/python2.7/bin
Everything runs good until I switch from root to the normal user at which point Python shell runs but some modules I installed such as PyYAML are missing. Again, these are OK when I run Python as root
As a regular user I'm not able to run pip, easy_install and wheel. For pip I get ImportError: No module named pkg_resources
P.S. Following #user suggestion I tried adding the following path taken from sys.path of the root user to .bashrc which did not fix the problem
export PYTHONPATH=$PYTHONPATH:/opt/python2.7/lib/python27.zip:/opt/python2.7/lib/python2.7:/opt/python2.7/lib/python2.7/plat-linux2:/opt/python2.7/lib/python2.7/lib-tk:/opt/python2.7/lib/python2.7/lib-old:/opt/python2.7/lib/python2.7/lib-dynload:/opt/python2.7/lib/python2.7/site-packages:/opt/python2.7/lib/python2.7/site-packages/PyYAML-3.11-py2.7-linux-x86_64.egg:/opt/python2.7/lib/python2.7/site-packages/pexpect-4.2.0-py2.7.egg:/opt/python2.7/lib/python2.7/site-packages/ptyprocess-0.5.1-py2.7.egg
Credible / official sources: no reply from official forum. Apart from the SO-link you mentioned, there is also https://unix.stackexchange.com/questions/7644/how-to-do-a-binary-install-of-python-2-7-on-suse-linux-enterprise-server-11, which sketches the way to do it described in Installing Python 2.7 on SLES 11 (SO is not official, is it? ;-)
Concerning your problem: both 2. and 3. might be caused by elements lacking in sys.path.
To test this, type
import sys; sys.path
both in user and root python and check for differences. These need to be merged. Try using PYTHONPATH first to test this, but be aware that there are different methods how to adjust sys.path.
If you just need to fix this for normal (non-daemon) users, adjusting the system-wide bash profile would be an easy solution.
(Any questions/feedback is welcome... :-)
I have been learning Django in the development mode for a two months and I am up to speed with most basic aspects of python + django now. However, I was using the built-in runserver till this time
Now, I have got a Webfaction hosting account and wanted to know the following
1) Webfaction sets up the project with a certain Django version (say 1.6.4) and Python version (say 2.7) initially
The project directory (for say project MYAPP) is /<>/webapps/MYAPP
When the site is running in production mode, how does the apache server know which Python version, and which site-packages versions to use with the MYAPP source code to render the site?
I can see that the MYAPP folder has a lib/python2.7 folder, however when I am connected to SSH terminal, and do a "which python", i see :
which python
/usr/local/bin/python
so, do I take that this is the Python executable that is being used for rendering the website instead of the one in webapps/MYSITE/lib/python2.7 folder? How does the information/data flow about which programs to use during rendering the site with apache mod_wsgi work?
2) I was using a virtualenv in the development mode during testing. How do I use this on webfaction in production mode?
3) I am using Pycharm IDE. It worked well for the development mode. I can see that it has a remote interpreter configuration and a Deployment setting/option.
The python path that the remote interpreter settings tool detects automatically is the python executable at /usr/local/bin/python
Is this fine, or should I be pointing it to the more local python2.7 in the webapps/lib folder?
Thanks a lot of the answers and pls let me know if you need any supplemental info
Note to the OP: This should really be three separate questions.
1) For WebFaction, your Django app will use the Python version (and libraries, etc.) defined in:
~/webapps/<appname>/apache2/conf/httpd.conf
Specifically, you'll want to look at what is defined for WSGIPythonPath (which should mostly match up with WSGIDaemonProcess unless you modify the config and are doing something strange).
Note that which python just tells you what the default python is in your shell. This has nothing to do with the config file for the webapp.
2) You may want to expand on this as to exactly what your use case is and why the default Django webapp created by WebFaction doesn't fit your needs. But the short answer is:
Create a virtualenv on your WebFaction account.
Install Django, etc. into the virtualenv.
Edit the httpd.conf file I mentioned above to use your virtualenv instead.
I've done this with both a Django webapp made via the WebFaction control panel and via a custom mod_wsgi webapp. So it does work. Just make sure to use the right Python version when making your virtualenv.
3) I don't use PyCharm so I can't answer this (one reason why this question should be split up).
I'm working on a Django-nonrel project using Django-rest-framework and I've run into the following error after following the instructions in the Token Authorization section of their Authorization API Guide:
ImportError: No module named rest_framework.authtoken
Normally I would just assume that this is something to do with my PYTHONPATH but I don't think that's exactly what the problem is because I can import this framework from both IDLE and the project's shell run using manage.py, the latter both with and without a virtual environment. Within the virtual environment I have installed django and djangorestframework, which should be the only requiremnets for the project thus far.
I had thought that it might have been a Python versioning problem but given that I can import the package directly from the project's shell (running under the virtual env) I'm kind of at a loss since theoretically running manage.py from the same virtual environment should result in the same context for locating libraries.
I've spent a long time searching around trying to fix this issue but to no avail. Any suggestions? I'm happy to provide any additional information as needed!
A few things to check:
Are you sure you are using the directory one level above rest_framework in your PYTHONPATH?
Did you restart your shell after installation?
Take a look at VirtualEnv PYTHONPATH setup. Did you try setting the PYTHONPATH for virtualenv explicitly?
In eclipse,when i create new project, i got an error like,
Error creating Django project
settings.py file not created
Stdout:
Stderr:
If i synchronize present project and runserver, iam getting Error: No module named filterspecs.But i haven't used filterspecs in my project. Already filterspecs.py installed in usr/local/lib/python2.7/dist-packages/django/contrib/admin.
Kindly advise to rectify the error.
You may be using django.contrib.admin.filterspecs to create custom filters for your admin pages, such as outlined here:
Custom Filter in Django Admin on Django 1.3 or below
Unfortunatelly, you will have to rewrite these using the new list_filter module functionality.
See the manual here:
https://docs.djangoproject.com/en/dev/ref/contrib/admin/#django.contrib.admin.ModelAdmin.list_filter
This happened to me as well, even though my code wasn't directly using any filterspecs.
Run python manage.py runserver --traceback to see exactly where the error is coming from.
This module was removed in Django 1.4, but other external modules you have listed in your settings.py might still be using it, so make sure you upgrade everything in your INSTALLED_APPS list. In my case, I was using an outdated version of FeinCMS, but after I upgraded it, the error went away.
Obviously, your system is lacking filterspecs module which is required by the project. Install it by typing sudo pip install filterspecs in the console (if you are on linux)
Trying to upload my django app on my obunto slice. The problem I'm facing right now there are a couple of packages I'm using. Which I installed in site packages on my machine. Now when I put them online on the server their sadly not working. Any ideas how to make them work.
p.s I get a error on import
Python must have a way to find these packages. Did you use standard installation procedures for them (i.e. setup.py install) or copy them in an accessible directory? If you didn't use setup.py install, check your PYTHONPATH environment variable. It should contain the directory where your packages are stored. If it doesn't, you can create it.
This is a Python issue really, not a Django issue.
To get more help paste the import error you're getting, as well as the directory structure of where you installed this package.