“ Errno 13 Permission denied 'bnr_code.csv'

Question

I have deployed a Django project on server using apache2 and wsgi, Its showing an error which I probably know that why its coming.

Error:

IOError at /
[Errno 13] Permission denied: 'bnr_code.csv'
Request Method: GET
Request URL:    http://93.188.167.63:8080/pep_learn/
Django Version: 1.10.8
Exception Type: IOError
Exception Value:    
[Errno 13] Permission denied: 'bnr_code.csv'
Exception Location: /home/pep_web/binaryDs/views.py in <module>, line 6
Python Executable:  /usr/bin/python
Python Version: 2.7.12

I have tried some slandered solutions which are available as given bellow:

chmod 777 pep_web/

chmod 771 pep_web/

sudo chown :www-data pep_web/

But nothing is working

This is the file which uses 'bnr_code.csv'

AA = {"A":"1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0",
      "C":"0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0",
      "D":"0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0",
      "E":"0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0",
      "F":"0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0",
      "G":"0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0",
      "H":"0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0",
      "I":"0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0",
      "K":"0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0",
      "L":"0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0",
      "M":"0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0",
      "N":"0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0",
      "P":"0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0",
      "Q":"0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0",
      "R":"0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0",
      "S":"0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0",
      "T":"0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0",
      "V":"0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0",
      "W":"0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0",
      "Y":"0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1"}



line = []
seqs = ["ATTTRY","ATSSRY"]


def bnr(x):
    Des = []
    for n in x:
        Des.append(AA[n.upper()])
    des = ",".join(Des)
    return des

def Des_write(ps):
    f = open("bnr_code.csv",'w')
    for p in ps:
        a  = bnr(p)
        f.write(p+','+a+'\n')
    f.close()


Des_write(seqs)

Please help One can examine the error at http://93.188.167.63:8080/pep_learn/

Answer 1

Don't use a relative path to the file, use an absolute path. This issue is explained in the documentation for mod_wsgi.

• http://modwsgi.readthedocs.io/en/develop/user-guides/application-issues.html#application-working-directory

Calculate the location of the file by doing:

filename = os.path.join(os.path.dirname(__file__), 'bnr_code.csv')