﻿{"id":16403,"date":"2026-06-18T10:00:00","date_gmt":"2026-06-18T08:00:00","guid":{"rendered":"https:\/\/www.sigterritoires.fr\/?p=16403"},"modified":"2026-06-07T14:29:24","modified_gmt":"2026-06-07T12:29:24","slug":"leer-codigo-plugin-qgis-sin-panico","status":"publish","type":"post","link":"https:\/\/www.sigterritoires.fr\/index.php\/es\/leer-codigo-plugin-qgis-sin-panico\/","title":{"rendered":"[ES]C\u00f3mo leer el c\u00f3digo de un plugin QGIS sin entrar en p\u00e1nico"},"content":{"rendered":"\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">Leer el c\u00f3digo de un plugin QGIS puede convertirse r\u00e1pidamente en una fuente de estr\u00e9s cuando se empieza a programar en Python. M\u00faltiples archivos, clases, m\u00e9todos desconocidos\u2026 todo parece complejo a primera vista. Sin embargo, <strong>no es necesario entenderlo todo para avanzar<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En este art\u00edculo veremos c\u00f3mo <strong>leer el c\u00f3digo de un plugin QGIS sin entrar en p\u00e1nico<\/strong>, adoptando un m\u00e9todo sencillo y progresivo. El objetivo es aprender a identificar lo esencial, comprender la l\u00f3gica general de un plugin y saber d\u00f3nde intervenir, incluso sin dominar todos los detalles t\u00e9cnicos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Esta gu\u00eda est\u00e1 dirigida a <strong>principiantes en el desarrollo de plugins QGIS<\/strong>, personas autodidactas y docentes que desean ganar confianza frente al c\u00f3digo Python generado por QGIS.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Contenu <\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/leer-codigo-plugin-qgis-sin-panico\/#%C2%BFPor_que_este_articulo\" >\u00bfPor qu\u00e9 este art\u00edculo?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/leer-codigo-plugin-qgis-sin-panico\/#Cambiar_la_actitud_leer_%E2%89%A0_entender_al_100\" >Cambiar la actitud: leer \u2260 entender al 100 %<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/leer-codigo-plugin-qgis-sin-panico\/#Empezar_por_los_archivos_clave\" >Empezar por los archivos clave<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/leer-codigo-plugin-qgis-sin-panico\/#Identificar_la_clase_principal\" >Identificar la clase principal<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/leer-codigo-plugin-qgis-sin-panico\/#Identificar_los_metodos_esenciales\" >Identificar los m\u00e9todos esenciales<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/leer-codigo-plugin-qgis-sin-panico\/#Leer_el_codigo_como_una_historia\" >Leer el c\u00f3digo como una historia<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/leer-codigo-plugin-qgis-sin-panico\/#Aceptar_no_entender_algunos_detalles\" >Aceptar no entender algunos detalles<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/leer-codigo-plugin-qgis-sin-panico\/#Modificar_sin_entenderlo_todo\" >Modificar sin entenderlo todo<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/leer-codigo-plugin-qgis-sin-panico\/#Una_regla_de_oro_para_principiantes\" >Una regla de oro para principiantes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.sigterritoires.fr\/index.php\/es\/leer-codigo-plugin-qgis-sin-panico\/#Conclusion\" >Conclusi\u00f3n<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%C2%BFPor_que_este_articulo\"><\/span>\u00bfPor qu\u00e9 este art\u00edculo?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Cuando se empieza a desarrollar plugins QGIS, el primer contacto con el c\u00f3digo Python puede resultar intimidante. M\u00faltiples archivos, clases, m\u00e9todos, palabras clave desconocidas\u2026 la tentaci\u00f3n de cerrar el editor y pensar <em>\u201cesto no es para m\u00ed\u201d<\/em> es muy com\u00fan.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La buena noticia es que <strong>no es necesario entenderlo todo para progresar<\/strong>. Leer c\u00f3digo es una habilidad que se adquiere poco a poco, paso a paso.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El objetivo de este art\u00edculo es ofrecerte un <strong>m\u00e9todo sencillo y tranquilizador<\/strong> para leer el c\u00f3digo de un plugin QGIS sin miedo.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cambiar_la_actitud_leer_%E2%89%A0_entender_al_100\"><\/span>Cambiar la actitud: leer \u2260 entender al 100 %<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Primera regla fundamental:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#x1f449; <strong>Leer c\u00f3digo no significa comprenderlo todo de inmediato.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Incluso los desarrolladores con experiencia no lo entienden todo en la primera lectura. El verdadero objetivo es:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>identificar las grandes partes del c\u00f3digo,<\/li>\n\n\n\n<li>reconocer lo que es importante <em>para ti<\/em> en ese momento,<\/li>\n\n\n\n<li>ignorar deliberadamente el resto.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Empezar_por_los_archivos_clave\"><\/span>Empezar por los archivos clave<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">En un plugin QGIS, no todos los archivos tienen la misma importancia.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Para comenzar, conc\u00e9ntrate \u00fanicamente en:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>el archivo Python principal del plugin,<\/li>\n\n\n\n<li>el archivo <code>.ui<\/code> asociado (si existe).<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Los dem\u00e1s archivos pueden dejarse de lado en una primera fase.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Identificar_la_clase_principal\"><\/span>Identificar la clase principal<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">En el archivo Python principal, busca la l\u00ednea que comienza por:<\/p>\n\n\n<div class='stb-container stb-style-black'><div class='stb-caption'><div class='stb-logo'><img class='stb-logo__image' src='data:image\/png;base64,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' alt='img'\/><\/div><div class='stb-caption-content'><\/div><div class='stb-tool'><\/div><\/div><div class='stb-content'><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class MiPlugin:\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Esta clase es el <strong>coraz\u00f3n del plugin<\/strong>. Todo lo realmente importante pasa por ella.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#x1f4a1; Consejo: ignora temporalmente las importaciones al inicio del archivo. Podr\u00e1s volver a ellas m\u00e1s adelante.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Identificar_los_metodos_esenciales\"><\/span>Identificar los m\u00e9todos esenciales<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">En un plugin QGIS cl\u00e1sico, hay tres m\u00e9todos especialmente importantes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>__init__()<\/code> \u2192 inicializaci\u00f3n del plugin<\/li>\n\n\n\n<li><code>initGui()<\/code> \u2192 creaci\u00f3n de botones y men\u00fas<\/li>\n\n\n\n<li><code>run()<\/code> \u2192 acci\u00f3n desencadenada por el usuario<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">&#x1f449; Si entiendes <strong>cu\u00e1ndo<\/strong> se ejecutan estos m\u00e9todos, ya has comprendido alrededor del <strong>50 % del funcionamiento del plugin<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Leer_el_codigo_como_una_historia\"><\/span>Leer el c\u00f3digo como una historia<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Intenta leer el c\u00f3digo como si fuera un peque\u00f1o guion:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>el plugin se carga (<code>__init__<\/code>),<\/li>\n\n\n\n<li>QGIS a\u00f1ade un bot\u00f3n (<code>initGui<\/code>),<\/li>\n\n\n\n<li>el usuario hace clic (<code>run<\/code>),<\/li>\n\n\n\n<li>el plugin hace algo.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Aunque algunas l\u00edneas sigan siendo confusas, la l\u00f3gica general se vuelve mucho m\u00e1s clara.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Aceptar_no_entender_algunos_detalles\"><\/span>Aceptar no entender algunos detalles<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Algunos elementos pueden ignorarse voluntariamente al principio:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>la gesti\u00f3n detallada de se\u00f1ales Qt,<\/li>\n\n\n\n<li>los par\u00e1metros avanzados de las clases,<\/li>\n\n\n\n<li>decoradores o sintaxis complejas.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">&#x1f449; No es un fracaso, es una <strong>estrategia de aprendizaje<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Volver\u00e1s de forma natural a estos conceptos cuando realmente los necesites.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Modificar_sin_entenderlo_todo\"><\/span>Modificar sin entenderlo todo<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Un excelente ejercicio consiste en:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>cambiar un texto,<\/li>\n\n\n\n<li>renombrar un bot\u00f3n,<\/li>\n\n\n\n<li>modificar el t\u00edtulo de una ventana,<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">sin comprender cada l\u00ednea del c\u00f3digo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si el resultado cambia en QGIS, <strong>ya est\u00e1s progresando<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Una_regla_de_oro_para_principiantes\"><\/span>Una regla de oro para principiantes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Si sabes <strong>d\u00f3nde<\/strong> modificar algo, ya sabes desarrollar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La comprensi\u00f3n completa llegar\u00e1 m\u00e1s adelante, con la pr\u00e1ctica.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusi\u00f3n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Leer el c\u00f3digo de un plugin QGIS no es una prueba t\u00e9cnica, sino un <strong>aprendizaje progresivo<\/strong>. Adoptando una lectura focalizada, aceptando la incomodidad temporal y avanzando mediante peque\u00f1os cambios, ganar\u00e1s confianza r\u00e1pidamente.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#x1f449; Lo m\u00e1s importante no es entenderlo todo, sino <strong>seguir avanzando<\/strong>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Leer el c\u00f3digo de un plugin QGIS puede convertirse r\u00e1pidamente en una fuente de estr\u00e9s cuando se empieza a programar en Python. M\u00faltiples archivos, clases, m\u00e9todos desconocidos\u2026 todo parece complejo a primera vista. Sin embargo, no&hellip;<\/p>\n","protected":false},"author":1,"featured_media":16330,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"sfsi_plus_gutenberg_text_before_share":"","sfsi_plus_gutenberg_show_text_before_share":"","sfsi_plus_gutenberg_icon_type":"","sfsi_plus_gutenberg_icon_alignemt":"","sfsi_plus_gutenburg_max_per_row":"","_monsterinsights_skip_tracking":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[3442,1357],"tags":[4240,4244,4236,1762,4246,4242,1369],"class_list":["post-16403","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pluigin-es","category-qgis-es","tag-desarrollo-plugins-qgis","tag-entender-codigo-qgis-plugin","tag-estructura-plugin-qgis","tag-plugin-es","tag-plugin-qgis-python-fr-es","tag-pyqgis-principiantes","tag-qgis-es"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Leer el c\u00f3digo de un plugin QGIS puede convertirse r\u00e1pidamente en una fuente de estr\u00e9s cuando se empieza a programar en Python. 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