CSV writer - no output??

[Clives]

The script reads the metadata from the .jpg, this is shown below
I have to use 'a', If I use 'w' it overwrites and I only get one row, not 100 rows.

The issue is each row is exported to three rows, NOT one row.
I should get:
C:\opt\data\image.jpg, 38.10264166666666, -84.483105

The csv writes out:
C:\opt\data\image.jpg
38.10264166666666
-84.483105

Thanks
Clive