code: def from_string(string):
          
          lines = string.split("\n")
          toks = lines[0].split()
          lengths = [float(i) for i in toks]
          toks = lines[1].split()
          angles = [float(i) for i in toks[0:3]]
          latt = Lattice.from_lengths_and_angles(lengths, angles)
          sp = []
          coords = []
          for l in lines[4:]:
              m = re.match(
                  r"\d+\s+(\w+)\s+([0-9\-\.]+)\s+([0-9\-\.]+)\s+([0-9\-\.]+)",
                  l.strip())
              if m:
                  sp.append(m.group(1))
                  coords.append([float(m.group(i)) for i in range(2, 5)])
          return Cssr(Structure(latt, sp, coords))
docs: Reads a string representation to a Cssr object.
  
          Args:
              string (str): A string representation of a CSSR.
  
          Returns:
              Cssr object.