{"id":9096,"date":"2022-09-17T04:23:28","date_gmt":"2022-09-16T22:53:28","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-importing-a-module-in-the-module-closed\/"},"modified":"2022-09-17T04:23:28","modified_gmt":"2022-09-16T22:53:28","slug":"solved-importing-a-module-in-the-module-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-importing-a-module-in-the-module-closed\/","title":{"rendered":"[Solved] Importing a module in the module [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-19191048\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"19191048\" data-parentid=\"19190705\" data-score=\"1\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<ol>\n<li>The first time a module is imported, an entry for it is made in <code>sys.modules<\/code>.  <code>sys.modules<\/code> is a dict, mapping the module name to the module code.  All subsequent imports of the same module find the module&#8217;s name in <code>sys.modules<\/code>, and simply retrieve the module&#8217;s code from the <code>sys.modules<\/code> dict.  So the <strong>code<\/strong> in the module is executed only once, the first time it&#8217;s imported.  That&#8217;s why no error results from importing <code>cf<\/code> from within <code>cf<\/code>.<\/li>\n<li>You didn&#8217;t explain <strong>exactly<\/strong> what you did with IDLE.  My guess:  you had <code>cf.py<\/code> open in an IDLE window, and did &#8220;Run Module&#8221; (F5) in that window.  Fine.  Then IDLE ran the code in the file.  That&#8217;s not the same as <strong>importing<\/strong> <code>cf<\/code>:  it&#8217;s running the code in <code>cf<\/code> directly.    Part of running that code is importing <code>cf<\/code>, which prints <code>cf.a<\/code>.  Another part of running that code is &#8211; again! &#8211; printing <code>cf.a<\/code>.  That&#8217;s why you saw it twice.<\/li>\n<\/ol>\n<p>By the way, I don&#8217;t know what you mean by &#8220;and in the console 1 times&#8221;.  But, again, you didn&#8217;t explain exactly what you did.  When I run <code>cf.py<\/code> from a console, I see <code>1<\/code> two times, and for the same reason I just explained:<\/p>\n<pre><code>$ python cf.py\n1\n1\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">1<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Importing a module in the module [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] The first time a module is imported, an entry for it is made in sys.modules. sys.modules is a dict, mapping the module name to the module code. All subsequent imports of the same module find the module&#8217;s name in sys.modules, and simply retrieve the module&#8217;s code from the sys.modules dict. So the code in &#8230; <a title=\"[Solved] Importing a module in the module [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-importing-a-module-in-the-module-closed\/\" aria-label=\"More on [Solved] Importing a module in the module [closed]\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[1566,349],"class_list":["post-9096","post","type-post","status-publish","format-standard","hentry","category-solved","tag-import","tag-python"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] Importing a module in the module [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-importing-a-module-in-the-module-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Importing a module in the module [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] The first time a module is imported, an entry for it is made in sys.modules. sys.modules is a dict, mapping the module name to the module code. 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