anchor.diff:  
       toList() {
           var list = [];
  -        for (var i in _str.split('')){
  +        for (var i in _str.split(''))
               list.add(new $PyString(i));
  -        }
           return list;
       }
   
  
positive.code:     var _value, type;
  
      $PyNum(value) {
          switch ($getType(value)) {
              case 6:
                  _value = value;
                  break;
  
negative.code: 			case 6:
  				return false;
  			case 3:
  				for (var i = 0; i < (this.length <= other.length ? this.length : other.length); i++){
  					if(_list[i] > other._list[i])
  						return false;
  					else if(_list[i] < other._list[i])
  