Question

class PDF(webapp.RequestHandler):
    def get(self):
        self.response.headers['Content-Type'] = "application/txt"
        self.response.headers['Content-Disposition'] = "attachment; filename=file.pdf"
        f = open('/Users/BP/file.pdf', 'r')
        self.response.out.write(f.read())
def main():
    application = webapp.WSGIApplication([('/download', PDF)],
                                        debug=False)
    util.run_wsgi_app(application)

I get this error when I try to download it:

[Errno 13] Permission denied: '/Users/BP/file.pdf'
Traceback (most recent call last):
  File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/webapp/_webapp25.py", line 701, in __call__
    handler.get(*groups)
  File "/base/data/home/apps/s~projectname/1.354763951774324185/main.py", line 43, in get
    f = open('/Users/BP/file.pdf', 'r')
IOError: [Errno 13] Permission denied: '/Users/BP/file.pdf'

Even though I’ve tried the chmod a+r file.pdf
Help please. Thank you!

Answer 1

os.path.dirname(__file__) gives you the application directory.

f = open(os.path.dirname(__file__) + /'BP/file.pdf', r)

Store your file in BP/ folder inside the main folder.

@Nicke, @Jon: GAE allows access to your files. “May the source be with you”.