CSV writer - no output??

[Larz60+]

Please answer (I didn't notice the filename before.):

1. Is this truly a .jpg file?
   
2. If so, you cannot read the data using 'a' (append) mode as you are trying to do, nor is it a csv format (which is text).
   
3. or is it a text file containing lat/long data?
   
4. what are your imports
   
5. Please attach a sample file.