text: 
  import sys
  
  from .output import CRYSTOUT, CRYSTOUT_Error
  from .gaussian_basis import parse_bs
  from .basis_library import download_basis_library
  
  
  MIN_PY_VER = (3, 5)
  
  assert sys.version_info >= MIN_PY_VER, "Python version must be >= {}".format(MIN_PY_VER)