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一个例子
我们反向推导一个int对象是怎么生成的.
int
代码位置
定义
说明
所有Type都是PyTypeObject的”实例”: PyType_Type/PyInt_Type
结构
第一张图, 箭头表示实例化(google doc用不是很熟找不到对应类型的箭头)
实例化
第二张图, 箭头表示指向
指向
使用
注意: 无论任何时候, ob_type指向的是 PyTypeObject的实例: PyType_Type/PyInt_Type…
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厉害！强~~~~没的说了！
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<p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">一个例子</span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><img src="/Public/forum/ueditor/image/20180403/1522719139383008.png" title="1522719139383008.png" alt="image.png"/></span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">我们反向推导一个</span><code style="border: 0px; margin: 0px; padding: 0px; font-size: 15px; font-family: Monaco, Consolas, "Andale Mono", "DejaVu Sans Mono", monospace; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);">int</code><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">对象是怎么生成的.</span></span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><br/></span></span></p><p></p><h3 id="1-pytypeobject" style="border: 0px; margin: 0px 0px 20px; padding: 0px; font-size: 20px; font-variant-numeric: normal; font-variant-east-asian: normal; font-stretch: normal; line-height: 30px; font-family: "Microsoft YaHei", "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);">1. 首先, 定义一种类型叫PyTypeObject</h3><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">代码位置 </p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">定义</p><p><img src="/Public/forum/ueditor/image/20180403/1522719158514007.png" title="1522719158514007.png" alt="image.png"/></p><p></p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">说明</p><p><img src="/Public/forum/ueditor/image/20180403/1522719265720361.png" title="1522719265720361.png" alt="image.png"/><span style="background-color: rgb(255, 255, 255);"><span style="background-color: rgb(255, 255, 255);"></span></span><br/></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">所有Type都是PyTypeObject的”实例”: PyType_Type/PyInt_Type</span></p><p><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><br/></span></p><p></p><h3 id="2-pytypeobjectpytype_type" style="border: 0px; margin: 0px 0px 20px; padding: 0px; font-size: 20px; font-variant-numeric: normal; font-variant-east-asian: normal; font-stretch: normal; line-height: 30px; font-family: "Microsoft YaHei", "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);">2. 然后, 用PyTypeObject初始化得到一个对象PyType_Type</h3><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">代码位置 </p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">定义</p><p><img src="/Public/forum/ueditor/image/20180403/1522719281908543.png" title="1522719281908543.png" alt="image.png"/></p><p><span style="background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">说明</span></span><br/></p><p><span style="background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);"><img src="/Public/forum/ueditor/image/20180403/1522719292971546.png" title="1522719292971546.png" alt="image.png"/></span></span></p><p></p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">结构</p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">第一张图, 箭头表示<code style="border: 0px; margin: 0px; padding: 0px; font-family: Monaco, Consolas, "Andale Mono", "DejaVu Sans Mono", monospace;">实例化</code>(google doc用不是很熟找不到对应类型的箭头)</p><p><img src="/Public/forum/ueditor/image/20180403/1522719763225775.png" title="1522719763225775.png" alt="image.png"/></p><p><span style="background-color: rgb(255, 255, 255);"><span style="background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">第二张图, 箭头表示</span><code style="border: 0px; margin: 0px; padding: 0px; font-size: 15px; font-family: Monaco, Consolas, "Andale Mono", "DejaVu Sans Mono", monospace; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);">指向</code><img src="/Public/forum/ueditor/image/20180403/1522719773527336.png" title="1522719773527336.png" alt="image.png"/></span></span><br/></p><p><span style="background-color: rgb(255, 255, 255);"><span style="background-color: rgb(255, 255, 255);"><span style="color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);">使用</span><img src="/Public/forum/ueditor/image/20180403/1522719823466630.png" title="1522719823466630.png" alt="image.png"/></span></span></p><p><span style="background-color: rgb(255, 255, 255);"><span style="background-color: rgb(255, 255, 255);"></span></span></p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 15px; color: rgb(46, 46, 46); font-family: "Microsoft YaHei", 宋体, "Myriad Pro", Lato, "Helvetica Neue", Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">注意: 无论任何时候, ob_type指向的是 PyTypeObject的实例: PyType_Type/PyInt_Type…</p><p><span style="background-color: rgb(255, 255, 255);"><span style="background-color: rgb(255, 255, 255);"></span></span><br/></p><code style="border: 0px; margin: 0px; padding: 0px; font-size: 15px; font-family: Monaco, Consolas, "Andale Mono", "DejaVu Sans Mono", monospace; color: rgb(46, 46, 46); white-space: normal; background-color: rgb(255, 255, 255);"><br/></code>
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