python - Flask: IOError when saving uploaded files

Question

I am learning Flask and am attempting to work through the uploading files pattern documented here: http://flask.pocoo.org/docs/patterns/fileuploads/. I am working in Firefox 12 on Windows 7, and am running my app in debug mode on my local machine.

I am copying the example verbatim, except for the value of the UPLOAD_FOLDER variable, which I have defined as UPLOAD_FOLDER = '/uploads' and have created a directory called "uploads" which is present in the application root (along with the static and template directories).

Upon uploading the file, I am receiving the error: IOError: [Errno 2] No such file or directory: '/uploads\u.png'

Interestingly, if I specify a raw string for the uploads folder which points directly to the uploads directly on my machine like UPLOAD_FOLDER = r'C:Python27projectsFlaskmyprojectuploads', everything works just fine.

Am I not specifying the directory in the right way? Should the uploads directory be placed somewhere else?

Answer 1

Why not try this, it works for me.

APP_ROOT = os.path.dirname(os.path.abspath(__file__))
UPLOAD_FOLDER = os.path.join(APP_ROOT, 'static/uploads')
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER