fromParamimportParamimportreclassParamString(Param):def__init__(self,value,classname=""):super(ParamString,self).__init__(classname=classname)ifvalue:try:self.value=self.sanitize(value)exceptExceptionase:self.err_warn("Unable to sanitize: %s"%str(value))self.err_warn(str(e))else:self.value=""defsanitize(self,s):returnre.sub(r'\W+','',s)