new_contents: from __future__ import division, absolute_import, print_function
  from .utilities.geometry import geometry
  from .utilities.geometry_default import ConeGeometryDefault as geometry_default
  from .utilities.Ax import Ax
  from .utilities.Atb import Atb
  from .utilities.plotproj import plotproj, plotProj, plotSinogram
  from .utilities.plotimg import plotimg, plotImg
  from .utilities.plot_geometry import plot_geometry
  from . import algorithms
  import tigre.demos
subject: resolve issue with deleted init