Python-2.7-Hello-World-App.md

+Ssh to Oakley and then from there to apps-test.awesim.org (webtest04).
+
+We use Software Collections. These versions of python are available:
+
+```
+efranz@webtest04:~$ scl --list | grep python
+python27
+rh-python35
+```
+
+To load this you can start a new bash session:
+
+```
+efranz@webtest04:~$ scl enable python27 -- bash
+efranz@webtest04:~$ python --version
+Python 2.7.8
+```
+
+Here is how to get the Passenger Flask python demo working under Open OnDemand. https://github.com/phusion/passenger-python-flask-demo. Ensure that the desired version of python is installed on the webhost.
+
+
+1. Clone the repo and check out the end result branch:
+
+```
+cd ~/awesim/dev
+efranz@webtest04:~/awesim/dev$ git clone git@github.com:phusion/passenger-python-flask-demo.git hellopython
+Initialized empty Git repository in /users/PZS0562/efranz/awesim/dev/hellopython/.git/
+remote: Counting objects: 18, done.
+remote: Compressing objects: 100% (10/10), done.
+remote: Total 18 (delta 5), reused 18 (delta 5), pack-reused 0
+Receiving objects: 100% (18/18), 5.32 KiB, done.
+Resolving deltas: 100% (5/5), done.
+efranz@webtest04:~/awesim/dev$ cd hellopython
+/users/PZS0562/efranz/awesim/dev/hellopython
+efranz@webtest04:~/awesim/dev/hellopython (master)$ git checkout end_result
+Branch end_result set up to track remote branch end_result from origin.
+Switched to a new branch 'end_result'
+```
+
+* notice passenger_wsgi.py imports the app.py file; Passenger will load passenger_wsgi.py first
+
+2. Create a `.pip` directory that will hold dependencies for this app, and install dependencies here:
+
+```
+efranz@webtest04:~/awesim/dev/hellopython (end_result)$ mkdir .pip
+efranz@webtest04:~/awesim/dev/hellopython (end_result)$ export PYTHONPATH=./.pip:$PYTHONPATH
+efranz@webtest04:~/awesim/dev/hellopython (end_result)$ pip install -t .pip flask
+You are using pip version 7.1.0, however version 9.0.1 is available.
+You should consider upgrading via the 'pip install --upgrade pip' command.
+Collecting flask
+  Using cached Flask-0.12-py2.py3-none-any.whl
+Collecting click>=2.0 (from flask)
+  Using cached click-6.7-py2.py3-none-any.whl
+Collecting itsdangerous>=0.21 (from flask)
+Collecting Werkzeug>=0.7 (from flask)
+  Using cached Werkzeug-0.11.15-py2.py3-none-any.whl
+Collecting Jinja2>=2.4 (from flask)
+  Using cached Jinja2-2.9.5-py2.py3-none-any.whl
+Collecting MarkupSafe>=0.23 (from Jinja2>=2.4->flask)
+Installing collected packages: click, itsdangerous, Werkzeug, MarkupSafe, Jinja2, flask
+Successfully installed Jinja2-2.6 MarkupSafe-0.11 Werkzeug-0.8.3 click flask itsdangerous
+efranz@webtest04:~/awesim/dev/hellopython (end_result)$ python
+Python 2.7.8 (default, Aug  4 2016, 09:29:33)
+[GCC 4.4.7 20120313 (Red Hat 4.4.7-9)] on linux2
+Type "help", "copyright", "credits" or "license" for more information.
+>>> import flask
+>>>
+```
+
+3. Add `bin/python` command which will be used to setup the environment
+
+NGINX with Passenger is configured to execute `$APPROOT/bin/python` if this exists, so we can add environment modifications here. Following the example https://github.com/OSC/nginx_stage/blob/cc1398ed35214ed6bd774ffee93ad679e5f01cb0/bin/ood_ruby.example
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