def getFloatGivenBinary(byteIndex, stlData):
 return unpack('f', stlData[byteIndex:(byteIndex + 4)])[0]

def getFloatGivenBinary ( byteIndex , stlData ) : return unpack ( 'f' , stlData [ byteIndex : ( byteIndex + 4 ) ] ) [ 0 ]
get vertex given stl vertex line .