code: def split_pow_tgh(self, text):
          
          return [n for n in re.split(r"/(?=([^{}]*{[^{}]*})*[^{}]*$)", text)
                  if n is not None][:2]
docs: Split a power/toughness string on the correct slash.
  
          Correctly accounts for curly braces to denote fractions.
          E.g., '2/2' --> ['2', '2']
          '3{1/2}/3{1/2}' --> ['3{1/2}', '3{1/2}']