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<h1 class="entry-title">__init__()方法</h1>
<p class="meta"><time datetime="2014-07-07T00:00:00+08:00" pubdate>Mon 07 July 2014</time></p>
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<div class="entry-content"><h3>首先复习一下,<a href="http://tulpar008.github.io/pythonzhong-__shuang-xia-hua-xian-de-zuo-yong.html">__（双下划线）的作用</a></h3>
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<p>Python中默认的成员函数，成员变量都是公开的(public),而且python中没有类似public,private等关键词来修饰成员函数，成员变量。 </p>
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<p>可有时候需要用到私有变量，因此诞生了__。 </p>
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<p>变量名或函数名前加上 ”__“两个下划线，那么这个函数或变量就会为私有的了。</p>
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<p>私有意味着只有内部能使用，对外部隐藏。 </p>
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<p>在内部，python使用一种 name mangling 技术，将 __membername替换成 _classname__membername来使用。 <br />
在外部，使用原来的私有成员的名字时，会提示找不到。（达到了隐藏的效果） </p>
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<hr />
<p>很显然，__init__是个私有函数</p>
<h5>__init__方法在类的一个对象被建立时，马上运行。这个方法可以用来对你的对象做一些你希望的 初始化 。</h5>
<h6>注意，这个名称的开始和结尾都是双下划线。</h6></div>
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