(self, s)
return str(s)
Return the value as a string. If it is already a string, the same
        object is returned.
Return the value as a string. If it is already a string, the same
        object is returned.
Return the value as a string . If it is already a string the same object is returned .
def to_val(self, s):
        """
        Return the value as a string. If it is already a string, the same
        object is returned.
        """
        if s is None:
            return ""
        if isinstance(s, str):
            return s
        return str(s)
def to_val ( self , s ) : if s is None : return "" if isinstance ( s , str ) : return s return str ( s )