When I copy paste python code, I normally have to change indentation on it. I load up the following commands and bind them to A-Left and A-Right to move my selection around.
_command pyleft() name_info(','VSARG2_MACRO|VSARG2_MARK|VSARG2_REQUIRES_MDI_EDITORCTL)
{
execute(shift_selection_left(4));
}
_command pyright() name_info(','VSARG2_MACRO|VSARG2_MARK|VSARG2_REQUIRES_MDI_EDITORCTL)
{
execute(shift_selection_right(4));
}