How do I stream a file using werkzeug?

Question

I want to stream a big file via werkzeug.
Currently my wsgi application looks like this:

from werkzeug.wrappers import Request, Response
from werkzeug.ws         


        

Answer 1

Just in case one would additionally like to: 1. preserve the file name 2. issue download without page redirect

# file_name assumed to be known
# file_path assumed to be known
file_size = os.path.getsize(file_path)
fh = file(file_path, 'rb')
return Response(fh,
                mimetype='application/octet-stream',
                headers=[
                    ('Content-Length', str(file_size)),
                    ('Content-Disposition', "attachment; filename=\"%s\"" % file_name),
                ],
                direct_passthrough=True)