code: def _create_h5_file(in_paths, new_path):
      
      if type(in_paths) == str:
          in_paths = [in_paths]
      new_file = File(new_path, 'w')
      for i, in_path in enumerate(in_paths):
          with File(in_path, 'r') as file:
              for key in list(file.keys()):
                  file.copy(source=file[key], dest=new_file, name=key)
  
      return new_file
docs: Function to create a new .h5 file that contains the copy of the contents of the input file(s).
  
      in_paths : str or list
          If the input is a string, it is assumed that the two signals are in the same file, else, if the input is a list,
          it is assumed that the two signals are in different file (the list should contain the paths to the two files).
      new_path : str
          The path to create the new file. (default: 'sync_file.h5')
  
      Returns
      -------
      new_file : h5py Object
          Object of the h5py package containing the new file containing the copy of the contents of the input file(s).