distinguish sfepy and pyvista mesh variables in read_data()
distinguish sfepy and pyvista mesh variables in read_data()

sfepy/sfepy,vlukes/sfepy,rc/sfepy,BubuLK/sfepy,vlukes/sfepy,sfepy/sfepy,rc/sfepy,rc/sfepy,BubuLK/sfepy,vlukes/sfepy,sfepy/sfepy,BubuLK/sfepy