cmd.get_view()
_ set_view (\
_     0.060789533,    0.978372335,    0.197717294,\
_     0.898643255,    0.032571565,   -0.437469184,\
_    -0.434447736,    0.204270869,   -0.877227724,\
_     0.000000000,    0.000000000, -113.159332275,\
_    31.187364578,    3.263738632,   45.902839661,\
_    55.096988678,  171.221603394,   20.000000000 )
cmd.turn("y",180)
cmd.get_view()
_ set_view (\
_    -0.060789552,    0.978372335,   -0.197717294,\
_    -0.898643196,    0.032571565,    0.437469274,\
_     0.434447825,    0.204270869,    0.877227664,\
_     0.000000000,    0.000000000, -113.159332275,\
_    31.187364578,    3.263738632,   45.902839661,\
_    55.096988678,  171.221603394,   20.000000000 )