目录1.创建基础抽象基类2.抽象属性Abstract property3.带类方法的抽象基类4.带有具体方法的抽象基类5.非显式继承6.多重继承在python中，抽象基类是一类特殊的类，它不能被实例化，主要用于作为基类被其他子类继承。抽
I have an application that I am building that needs to modify a configuration file. My problem is that I am not able to read the file in line by line.I keep geeting the the entire file as a single st
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