title: How to calculate a DXF's used area in Python 3 with ezdxf or dxfgrabber?
body: <p>I would like to calculate the minimum size of an rectangle that contains all elements of an DXF file, but apparently neither ezdxf or dxfgrabber have a function to do that.  </p>
  
  <p>Is iterating through all entities and calculating the points the only way to do it? If the drawing used only lines and boxes that would be easy, but with splines, arcs and circles the process become tiring.</p>