{"id":22361,"date":"2024-03-15T23:26:37","date_gmt":"2024-03-15T23:26:37","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-call-a-python-script-from-lua\/"},"modified":"2024-03-21T22:41:51","modified_gmt":"2024-03-21T22:41:51","slug":"how-to-call-a-python-script-from-lua","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-call-a-python-script-from-lua\/","title":{"rendered":"How to call a Python script from Lua?"},"content":{"rendered":"<p>Using Lua&#8217;s external call functionality makes it possible to execute Python scripts in Lua. There are two common methods to achieve this goal.<\/p>\n<ol>\n<li>execute this<\/li>\n<li>execute a system command<\/li>\n<li>a Python script<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-built_in\">os<\/span>.<span class=\"hljs-built_in\">execute<\/span>(<span class=\"hljs-string\">\"python script.py\"<\/span>)\r\n<\/code><\/pre>\n<ol>\n<li>open a connection to a program<\/li>\n<li>open a pipe<\/li>\n<li>I would use io.popen.<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">local<\/span> handle = <span class=\"hljs-built_in\">io<\/span>.<span class=\"hljs-built_in\">popen<\/span>(<span class=\"hljs-string\">\"python\"<\/span>, <span class=\"hljs-string\">\"w\"<\/span>)\r\nhandle:<span class=\"hljs-built_in\">write<\/span>(<span class=\"hljs-string\">\"print('Hello from Python!')\"<\/span>)\r\nhandle:<span class=\"hljs-built_in\">close<\/span>()\r\n\r\nhandle = <span class=\"hljs-built_in\">io<\/span>.<span class=\"hljs-built_in\">popen<\/span>(<span class=\"hljs-string\">\"python script.py\"<\/span>)\r\n<span class=\"hljs-keyword\">local<\/span> <span class=\"hljs-built_in\">output<\/span> = handle:<span class=\"hljs-built_in\">read<\/span>(<span class=\"hljs-string\">\"*a\"<\/span>)\r\nhandle:<span class=\"hljs-built_in\">close<\/span>()\r\n\r\n<span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-built_in\">output<\/span>)\r\n<\/code><\/pre>\n<p>The above example first starts the Python interpreter and writes a line of code to print a message. Next, it closes the input stream and calls the Python script script.py again using the io.popen function. Finally, it reads the output of the Python script and prints it out.<\/p>\n<p>Please make sure that the Python interpreter is installed before executing this code, and that the &#8216;python&#8217; command can be found in the system&#8217;s environment variables.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Using Lua&#8217;s external call functionality makes it possible to execute Python scripts in Lua. There are two common methods to achieve this goal. execute this execute a system command a Python script os.execute(&#8220;python script.py&#8221;) open a connection to a program open a pipe I would use io.popen. local handle = io.popen(&#8220;python&#8221;, &#8220;w&#8221;) handle:write(&#8220;print(&#8216;Hello from Python!&#8217;)&#8221;) [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-22361","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to call a Python script from Lua? - Blog - Silicon Cloud<\/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:\/\/www.silicloud.com\/blog\/how-to-call-a-python-script-from-lua\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to call a Python script from Lua?\" \/>\n<meta property=\"og:description\" content=\"Using Lua&#8217;s external call functionality makes it possible to execute Python scripts in Lua. There are two common methods to achieve this goal. execute this execute a system command a Python script os.execute(&quot;python script.py&quot;) open a connection to a program open a pipe I would use io.popen. local handle = io.popen(&quot;python&quot;, &quot;w&quot;) handle:write(&quot;print(&#039;Hello from Python!&#039;)&quot;) [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-to-call-a-python-script-from-lua\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-15T23:26:37+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-21T22:41:51+00:00\" \/>\n<meta name=\"author\" content=\"Sophia Anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sophia Anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-call-a-python-script-from-lua\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-call-a-python-script-from-lua\/\"},\"author\":{\"name\":\"Sophia Anderson\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/19a24313de9c988db3d69226b4a40a30\"},\"headline\":\"How to call a Python script from Lua?\",\"datePublished\":\"2024-03-15T23:26:37+00:00\",\"dateModified\":\"2024-03-21T22:41:51+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-call-a-python-script-from-lua\/\"},\"wordCount\":132,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-call-a-python-script-from-lua\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-to-call-a-python-script-from-lua\/\",\"name\":\"How to call a Python script from Lua? 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