Python-OpenCTM is a Python interface for the OpenCTM file format. A format that allows a geometry to be compressed to a fraction of comparable file formats (3DS, STL, COLLADA...).
Pre-built python (3.5-3.10) wheels available for Linux, MacOS and Windows
pip install python-openctm
import openctm
# read
mesh = openctm.import_mesh('foo.ctm')
print(mesh.vertices.shape)
# (124, 3)
# write
openctm.export_mesh(mesh, 'bar.ctm')