PermissionError with open()

[John]

Hello everyone,

I am trying to run this code inside view.py, to make PDF file able to be downloaded :

import os
BASE_DIR = os.path.dirname(os.path.dirname(__file__))    
def download(request, file_name = 'article1'):
        file = open(os.path.join(BASE_DIR, 'media').replace('\\','/').format(file_name), 'rb')
        response = HttpResponse(file, content_type='application/pdf')
        response['Content-Disposition'] = "attachment; filename={}".format(file_name)
        return response

The problem with line 4. I will get PermissionError on windows

PermissionError at /download/

[Errno 13] Permission denied: 'C:/Users/Oana/Desktop/tutela-net/media'

 

and IsADirectoryError on linux.

Even though, if I will use 'wb' instead of 'rb' or any other options. or the absolute path, I will get the same error.

[Vijay Khemlani]

Your call to 

".format(file_name)"

does nothing as the original string does not have the positional arguments ("{0}" for example)

You could just append the filename with "+".

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