Can't get Flask running using Passenger WSGI on Dreamhost shared hosting
Question: I'm trying to get a Flask "hello world" application working on a Dreamhost
shared server, following the [instructions on their
wiki](http://wiki.dreamhost.com/Flask), but I'm not having any luck.

My Flask application is the "hello world" one from the [Flask quickstart
guide](http://flask.pocoo.org/docs/quickstart/):

    
    
    from flask import Flask
    app = Flask(__name__)
    
    @app.route('/')
    def hello_world():
        return 'Hello World!'
    
    if __name__ == '__main__':
        app.run()
    

Which I've got in a file called "hello.py" in a folder called mysite, as per
the DH wiki instructions. My passenger_wsgi.py file is:

    
    
    import sys, os
    INTERP = os.path.join(os.environ['HOME'], 'flask_env', 'bin', 'python')
    if sys.executable != INTERP:
        os.execl(INTERP, INTERP, *sys.argv)
    sys.path.append(os.getcwd())
    from mysite import hello as application
    

I've tried running the commands in a Python console, and last import line
failed until I added the `__init__.py` file to the mysite directory.

When I try and access the website I just get a 500 error (and nothing in the
logs unfortunately, unless they're in logs I can't get to as this is a shared
server...).

As this is the most basic of setups (i.e., copied and pasted from a wiki), I
can't help feeling that I'm missing something really simple. Or perhaps this
isn't possible on a shared server?


Answer: Does answering my own question mean I'm talking to myself?

Anyway - I seem to have fixed it. Rather than find a nice helpful error
message, I went through all the steps again one at a time, and it turns out it
was an import error in the `passenger_wsgi.py` file. As the app is in the
`mysite` subdirectory, the line:

    
    
    from mysite import hello as application
    

should have been (and in fact, now is):

    
    
    from mysite.hello import app as application
    

And it works. Which is nice.

