code: def from_file(cls, filename="CTRL", **kwargs):
          
          with zopen(filename, "rt") as f:
              contents = f.read()
          return LMTOCtrl.from_string(contents, **kwargs)
docs: Creates a CTRL file object from an existing file.
  
          Args:
              filename: The name of the CTRL file. Defaults to 'CTRL'.
  
          Returns:
              An LMTOCtrl object.