{"id":1563,"date":"2012-04-20T23:07:05","date_gmt":"2012-04-20T15:07:05","guid":{"rendered":"http:\/\/www.yewen.us\/blog\/?p=1563"},"modified":"2012-04-20T23:07:05","modified_gmt":"2012-04-20T15:07:05","slug":"python-class-tricky","status":"publish","type":"post","link":"https:\/\/www.yewen.us\/blog\/2012\/04\/python-class-tricky\/","title":{"rendered":"Python \u7684\u5bf9\u8c61\u6a21\u578b\u5230\u5e95\u662f\u600e\u6837\u7684?"},"content":{"rendered":"<p>\u4eca\u5929\u5199\u4e2a\u5c0f\u5de5\u5177, \u4e2d\u95f4\u8c03\u7684\u6b32\u4ed9\u6b32\u6b7b, \u76f4\u63a5\u4e0a\u56fe, \u5927\u5bb6\u770b\u770b\u8fd9\u4e2a\u7a0b\u5e8f\u4f1a\u8f93\u51fa\u5565? \u73af\u5883\u662f Python 2.7.2, \u67d0 Linux \u53d1\u884c\u7248 (\u670d\u52a1\u5668, \u6211\u4e5f\u4e0d\u77e5\u9053\u5177\u4f53\u662f\u5565, \u53ef\u80fd\u662f CentOS)<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/ww4.sinaimg.cn\/large\/41197f67jw1ds6h6p5lusj.jpg\" title=\"python-tricky\" class=\"alignnone\" width=\"629\" height=\"925\" \/><\/p>\n<p>\u6211\u7684\u7406\u89e3\u662f\u5982\u679c\u6211\u7684\u5199\u6cd5\u6709\u95ee\u9898, \u90a3\u5e94\u8be5\u4e24\u4e2a <code>print m1<\/code> \u7684\u65f6\u5019\u7684\u7ed3\u679c\u90fd\u8ddf <code>print m2<\/code> \u4e00\u6837, \u8981\u4e0d\u4e24\u4e2a\u7ed3\u679c\u5e94\u8be5\u90fd\u4e0d\u4e00\u6837, \u6240\u4ee5\u6211\u786e\u8ba4\u4e86 <code>model_path<\/code> \u90fd\u6b63\u786e\u8d4b\u503c\u540e, \u5c31\u8ba4\u4e3a <code>model_dict<\/code> \u4e5f\u90fd\u88ab\u6b63\u786e\u8d4b\u503c\u4e86. \u4f46\u662f\u8c03\u8bd5\u7684\u65f6\u5019\u53d1\u73b0\u4e24\u4e2a <code>model_dict<\/code> \u8c03\u7528\u7684\u7ed3\u679c\u5c45\u7136\u4e00\u6a21\u4e00\u6837, \u7136\u540e\u5e26\u7684 <code>model_path<\/code> \u8fd8\u4e0d\u4e00\u81f4 (\u5f53\u7136, \u6211\u4e2d\u95f4\u505a\u4e86\u5f88\u591a\u522b\u7684\u64cd\u4f5c, \u4e00\u5f00\u59cb\u6ca1\u9a8c\u8bc1\u4e24\u4e2a <code>model_dict<\/code> \u91cc\u9762\u7684\u5185\u5bb9). \u540e\u9762\u628a <code>model_dict<\/code> \u7684\u5185\u5bb9\u4e5f\u6253\u51fa\u6765\u5c31\u50bb\u773c\u4e86, \u8fd9\u4fe9\u4e3a\u5565\u90fd\u4e00\u6837\u5462? \u5c31\u56e0\u4e3a\u4e00\u4e2a\u662f\u5b57\u7b26\u4e32\u4e00\u4e2a\u662f <code>dict<\/code>? \u8dd1\u5230\u4e07\u80fd\u7684 PUZZLES \u7fa4\u53bb\u95ee\u4e86\u4e0b, \u7acb\u9a6c\u6709\u4eba\u8bf4\u4f60\u8fd9\u4e2a\u521d\u59cb\u5316\u4e0d\u662f\u5e94\u8be5\u5728 <code>__init__<\/code> \u91cc\u505a\u624d\u5bf9\u4e48? \u4e8e\u662f\u5c06\u4ee3\u7801\u6539\u6210\u8fd9\u6837\u5c31 OK \u4e86:<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/ww2.sinaimg.cn\/large\/41197f67jw1ds6hovh6nuj.jpg\" title=\"python-tricky-fix\" class=\"alignnone\" width=\"628\" height=\"926\" \/><\/p>\n<p>\u540e\u6765\u8ddf <a href=\"http:\/\/weibo.com\/runnery\" title=\"\u65b0\u6d6a\u5fae\u535a runnery\" target=\"_blank\">@runnery<\/a> \u548c <a href=\"https:\/\/twitter.com\/#!\/leemars\" title=\"Twitter LeeMars\" target=\"_blank\">@LeeMars<\/a> \u8ba8\u8bba\u4e86\u4e0b, \u7ec8\u4e8e\u660e\u767d\u662f\u600e\u4e48\u56de\u4e8b\u4e86, \u5148\u4e0a\u4e00\u5f20 @runnery \u7ed9\u6211\u7684\u89e3\u91ca\u56fe<br \/>\n<img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"http:\/\/ww3.sinaimg.cn\/large\/5357c0afjw1ds6ge2atmkj.jpg\" title=\"python class prototype\" class=\"alignnone\" width=\"541\" height=\"326\" \/><\/p>\n<p>\u6309\u8fd9\u4e2a\u7406\u89e3, \u6211\u7684\u4e24\u6b21\u64cd\u4f5c\u90fd\u662f\u5728\u64cd\u4f5c\u7c7b\u5c5e\u6027, \u6700\u540e\u7684\u8f93\u51fa\u5e94\u8be5\u90fd\u662f <code>m2.reload()<\/code> \u540e\u7684\u503c. \u800c\u5b9e\u9645\u4e0a\u7b2c\u4e00\u4efd\u4ee3\u7801\u7684\u91cc, \u4e24\u4e2a\u5b9e\u4f8b\u521d\u59cb\u5316\u65f6, <code>model_dict<\/code> \u548c <code>model_path<\/code> \u90fd\u8fd8\u662f\u7c7b\u5c5e\u6027, \u800c\u8c03\u7528 <code>reload()<\/code> \u7684\u8fc7\u7a0b\u4e2d, \u6211\u505a\u4e86\u4e00\u4e2a <code>self.model_path = path<\/code> \u7684\u64cd\u4f5c, \u800c\u6b63\u662f\u8fd9\u4e2a\u64cd\u4f5c, \u8ba9\u4e24\u4e2a\u5b9e\u4f8b\u5206\u522b\u5c06 <code>model_path<\/code> \u53d8\u6210\u4e86\u5b9e\u4f8b\u5c5e\u6027, \u800c <code>model_dict<\/code>, \u5bf9\u4e0d\u8d77, \u6211\u4ece\u6765\u6ca1\u4fee\u6539\u8fc7\u4ed6\u5177\u4f53\u7684\u6307\u5411, \u505a\u7684 <code>clear()<\/code> \u64cd\u4f5c\u4ec0\u4e48\u7684\u90fd\u8fd8\u662f\u5728\u539f\u6765\u7684 <code>dict<\/code> \u4e0a\u5728\u64cd\u4f5c, \u6240\u4ee5\u4e00\u76f4\u662f\u7c7b\u5c5e\u6027.<\/p>\n<p>\u603b\u7ed3: \u8fd9\u5c31\u662f\u4e00\u4e2a\u5751, \u5bf9\u8bed\u8a00\u4e0d\u719f\u7684\u5751<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4eca\u5929\u5199\u4e2a\u5c0f\u5de5\u5177, \u4e2d\u95f4\u8c03\u7684\u6b32\u4ed9\u6b32\u6b7b, \u76f4\u63a5\u4e0a\u56fe, \u5927\u5bb6\u770b\u770b\u8fd9\u4e2a\u7a0b\u5e8f\u4f1a\u8f93\u51fa\u5565? \u73af\u5883\u662f Python 2.7.2 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5,7],"tags":[41,53,127,152],"class_list":["post-1563","post","type-post","status-publish","format-standard","hentry","category-work-life","category-tech-notes","tag-class","tag-dict","tag-python","tag-tricky"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p4aR5e-pd","_links":{"self":[{"href":"https:\/\/www.yewen.us\/blog\/wp-json\/wp\/v2\/posts\/1563","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yewen.us\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yewen.us\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yewen.us\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yewen.us\/blog\/wp-json\/wp\/v2\/comments?post=1563"}],"version-history":[{"count":0,"href":"https:\/\/www.yewen.us\/blog\/wp-json\/wp\/v2\/posts\/1563\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yewen.us\/blog\/wp-json\/wp\/v2\/media?parent=1563"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yewen.us\/blog\/wp-json\/wp\/v2\/categories?post=1563"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yewen.us\/blog\/wp-json\/wp\/v2\/tags?post=1563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}