python按行读取txt文件

def get_classes_id(self,classtxt_path):
        re_dict = {}
        with open(classtxt_path,mode='r',encoding='utf-8') as f:
            line = f.readline()
            while line:                
                c_class,id = line.split(',')               
                re_dict[c_class.strip()] = id.strip()
                line = f.read()                
        return re_dict

{'cat': '0', 'dog': '1'}
{'cat': '0', 'dog': '1'}