TypeError: gp_camera_capture expected 3 arguments, got 4 about python-gphoto2

[jim-easterbrook]

Try 'pydoc gphoto2.gp_camera_capture' to see what parameters it expects.

Don't forget this bit of the README:
"Note that there is one major difference between the Python and C APIs. C functions that use a pointer parameter to return a value (and often do some memory allocation) such as gp_camera_new() have Python equivalents that create the required pointer and return it in a list with the gphoto2 error code."