What coordinate system is this? How can I project it to WGS84 (lat-long) system in Python?

I had an AutoCAD drawing of a floor plan. I imported it to python using Fiona and checked the metadata. The CRS is empty. When I checked the coordinates for the geometry, it was in the following form,

{
    "type": "FeatureCollection",
    "features": [{
        "type": "Feature",
        "id": "0",
        "properties": {
            "A-WALL__ID": null
        },
        "geometry": {
            "type": "LineString",
            "coordinates": [
                [5319.568084840497, 5864.945849450571, 0.0],
                [5319.568084840497, 5882.945849450571, 0.0]
            ]
        }
    }, {
        "type": "Feature",
        "id": "1",
        "properties": {
            "A-WALL__ID": null
        },
        "geometry": {
            "type": "LineString",
            "coordinates": [
                [4767.568084840497, 5863.945849450571, 0.0],
                [4767.568084840497, 5882.945849450571, 0.0]
            ]
        }
    }
]
}

I imported the AutoCAD file in following way,

c = fiona.open("level0dwg.dxf", 'r')
c.meta

Following was the output,

{'driver': 'DXF',
 'schema': {'properties': OrderedDict([('Layer', 'str'),
               ('PaperSpace', 'int'),
               ('SubClasses', 'str'),
               ('Linetype', 'str'),
               ('EntityHandle', 'str'),
               ('Text', 'str')]),
  'geometry': 'Unknown'},
 'crs': {},
 'crs_wkt': ''}

I am confused as in what is this coordinate system. Is it pixel-based or something like that?
and how can I transform it to WGS84 system with lat-longs to place it on the map?
The AutoCAD file is not georeferenced.

Is there a way to do this in Python?

I want to georefer the DWG file to place it on the map using Python. I have been stuck at this issue for quite some time now.