-
Notifications
You must be signed in to change notification settings - Fork 1
/
Copy path__init__fang-fa.html
149 lines (141 loc) · 7.28 KB
/
__init__fang-fa.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
<!DOCTYPE html>
<html lang="en-US">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="author" content="Won" />
<meta name="copyright" content="Won" />
<meta name="keywords" content="Python, It, " />
<title>__init__()方法 · Tugqi Biz
</title>
<link href="http://cdn-images.mailchimp.com/embedcode/slim-081711.css" rel="stylesheet" type="text/css">
<link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.1/css/bootstrap-combined.min.css" rel="stylesheet">
<link rel="stylesheet" type="text/css" href="http://wbowam.github.io/theme/css/style.css" media="screen">
<link rel="stylesheet" type="text/css" href="http://wbowam.github.io/theme/css/solarizedlight.css" media="screen">
<link rel="shortcut icon" href="http://wbowam.github.io/theme/images/favicon.ico" type="image/x-icon" />
<link rel="apple-touch-icon" href="http://wbowam.github.io/theme/images/apple-touch-icon.png" />
<link rel="apple-touch-icon" sizes="57x57" href="http://wbowam.github.io/theme/images/apple-touch-icon-57x57.png" />
<link rel="apple-touch-icon" sizes="72x72" href="http://wbowam.github.io/theme/images/apple-touch-icon-72x72.png" />
<link rel="apple-touch-icon" sizes="114x114" href="http://wbowam.github.io/theme/images/apple-touch-icon-114x114.png" />
<link rel="apple-touch-icon" sizes="144x144" href="http://wbowam.github.io/theme/images/apple-touch-icon-144x144.png" />
<link rel="icon" href="http://wbowam.github.io/theme/images/apple-touch-icon-144x144.png" />
</head>
<body>
<div id="content-sans-footer">
<div class="navbar navbar-static-top">
<div class="navbar-inner">
<div class="container">
<a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</a>
<a class="brand" href="http://wbowam.github.io/"><span class=site-name>Tugqi Biz</span></a>
<div class="nav-collapse collapse">
<ul class="nav pull-right top-menu">
<li ><a href="http://wbowam.github.io">Home</a></li>
<li ><a href="http://wbowam.github.io/categories.html">Categories</a></li>
<li ><a href="http://wbowam.github.io/tags.html">Tags</a></li>
<li ><a href="http://wbowam.github.io/archives.html">Archives</a></li>
<li><form class="navbar-search" action="http://wbowam.github.io/search.html" onsubmit="return validateForm(this.elements['q'].value);"> <input type="text" class="search-query" placeholder="Search" name="q" id="tipue_search_input"></form></li>
</ul>
</div>
</div>
</div>
</div>
<div class="container-fluid">
<div class="row-fluid">
<div class="span1"></div>
<div class="span10">
<article>
<div class="row-fluid">
<header class="page_header span10">
<h1><a href="http://wbowam.github.io/__init__fang-fa.html"> __init__()方法 </a></h1>
</header>
</div>
<div class="row-fluid">
<div class="span10 article-content">
<h3 id="__">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><a class="headerlink" href="#__" title="Permanent link">¶</a></h3>
<ul>
<li>
<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>
</li>
<li>
<p>可有时候需要用到私有变量，因此诞生了__。 </p>
</li>
<li>
<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>
</li>
<li>
<p>私有意味着只有内部能使用，对外部隐藏。 </p>
</li>
<li>
<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>
</li>
</ul>
<hr />
<p>很显然，__init__是个私有函数</p>
<h5 id="__init__">__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 。<a class="headerlink" href="#__init__" title="Permanent link">¶</a></h5>
<h6 id="_1">注意，这个名称的开始和结尾都是双下划线。<a class="headerlink" href="#_1" title="Permanent link">¶</a></h6>
<aside>
<hr/>
<nav>
<ul class="articles_timeline">
<li class="previous_article">« <a href="http://wbowam.github.io/django-fen-ye.html" title="Previous: django 分页">django 分页</a></li>
<li class="next_article"><a href="http://wbowam.github.io/pythonzhong-raw_inputhe-inputde-yi-tong-dian.html" title="Next: Python中raw_input和input的异同点">Python中raw_input和input的异同点</a> »</li>
</ul>
</nav>
</aside>
<!-- Duoshuo Comment BEGIN -->
<div class="ds-thread" data-author-key="4433755"></div>
<script type="text/javascript">
var duoshuoQuery = {short_name:"tlbog"};
(function() {
var ds = document.createElement('script');
ds.type = 'text/javascript';ds.async = true;
ds.src = 'http://static.duoshuo.com/embed.js';
ds.charset = 'UTF-8';
(document.getElementsByTagName('head')[0]
|| document.getElementsByTagName('body')[0]).appendChild(ds);
})();
</script>
<!-- Duoshuo Comment END -->
</div>
<section>
<div class="span2" style="float:right;font-size:0.9em;">
<h4>Published</h4>
<time pubdate="pubdate" datetime="2014-07-07T00:00:00+08:00">Jul 7, 2014</time>
<h4>Category</h4>
<a class="category-link" href="/categories.html#It-ref">It</a>
<h4>Tags</h4>
<ul class="list-of-tags tags-in-article">
<li><a href="/tags.html#Python-ref">Python
<span>15</span>
</a></li>
</ul>
</div>
</section>
</div>
</article>
</div>
<div class="span1"></div>
</div>
</div>
</div>
<footer>
<div id="footer">
<ul class="footer-content">
<li class="elegant-power">Powered by <a href="http://getpelican.com/" title="Pelican Home Page">Pelican</a>. Theme: <a href="http://oncrashreboot.com/pelican-elegant" title="Theme Elegant Home Page">Elegant</a> by <a href="http://oncrashreboot.com" title="Talha Mansoor Home Page">Talha Mansoor</a></li>
</ul>
</div>
</footer> <script src="http://code.jquery.com/jquery.min.js"></script>
<script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.1/js/bootstrap.min.js"></script>
<script>
function validateForm(query)
{
return (query.length > 0);
}
</script>
</body>
</html>