visiopy
Handling Microsoft Visio 2013 vsdx files from Python
WARNING, DO NOT USE. Very much a work in progress
Here's how I would LIKE to be able to generate diagrams
>>> import visiopy
>>> my_diagram = visiopy('MyFirstVisio.vsdx', author='Mathijs Mortimer', use_metric=True)
>>> page_rel_id = diag.add_page('MyFirstPage')
>>> rect1 = my_diagram.add_rect(page_rel_id, pin_x=2.0, pin_y=5.0, width=2.0, height=2.0)
>>> rect2 = my_diagram.add_rect(page_rel_id, pin_x=6.0, pin_y=5.0, width=2.0, height=2.0)
>>> connect1 = my_diagram.add_connect(page_rel_id, rect1, rect2)
>>> my_diagram.to_file('MyFirstVisio.vsdx')A nice short description of the format found here: http://www.digitalpreservation.gov/formats/fdd/fdd000021.shtml
The Visio VBA Reference provides good insight in the workings of the various objects: https://msdn.microsoft.com/en-us/library/office/ff765377.aspx