text: #!/usr/bin/env python3
  import argparse
  import os
  import sys
  from TB2J.io_merge import merge
  
  
  def main():
      parser = argparse.ArgumentParser(
          description=
          "TB2J_merge: merge the exchange parameters calculated from different directions. It can accept two types of calculations, first, the lattice structures are rotated from the original structure, from z to x, y, and z, respectively. The structures could be generated using the TB2J_rotate.py command. The second type is the three calculations have the spins along the x, y, and z axis, respectively."
      )
      parser.add_argument(
          'directories',
          type=str,
          nargs='+',
          help=
          'The three directories the TB2J calculations are done. Inside each of them, there should be a TB2J_results directory which contains the magnetic interaction parameter files. e.g. Fe_x Fe_y Fe_z. Alternatively, it could  be the TB2J results directories.'
      )
      parser.add_argument(
          '--type',
          '-T',
          type=str,
          help=
          'The type of calculations, either structure of spin, meaning that the three calculations are done by rotating the structure/spin. '
      )
      args = parser.parse_args()
      merge(*(args.directories), args.type.strip().lower())
  
  
  main()
  