# Blender 2.65 (sub 9), Revision: 53912
bpy.ops.object.editmode_toggle()  # Operator
bpy.ops.mesh.knife_tool(use_occlude_geometry=True, only_selected=False)  # Operator
bpy.ops.mesh.select_all(action='TOGGLE')  # Operator

# backtrace
blender() [0x837030]
/usr/lib/libc.so.6(+0x35340) [0x7fca923ae340]
[0x4fdac70]