{"id":169062,"date":"2023-06-30T11:39:41","date_gmt":"2023-06-30T10:39:41","guid":{"rendered":"https:\/\/datascientest.com\/en\/?p=169062"},"modified":"2023-06-30T11:39:42","modified_gmt":"2023-06-30T10:39:42","slug":"pylint-how-to-boost-productivity-through-code-analysis","status":"publish","type":"post","link":"https:\/\/datascientest.com\/en\/pylint-how-to-boost-productivity-through-code-analysis","title":{"rendered":"Pylint: How to boost productivity through code analysis"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"169062\" class=\"elementor elementor-169062\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-aac97bc e-flex e-con-boxed e-con\" data-id=\"aac97bc\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ba780b6 elementor-widget elementor-widget-heading\" data-id=\"ba780b6\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h2 class=\"elementor-heading-title elementor-size-default\">In this article, discover the world of Pylint to transform the way you program. Whether you're a seasoned developer or a passionate beginner, Pylint is your ally in improving the quality of your code.<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9697325 elementor-widget elementor-widget-text-editor\" data-id=\"9697325\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><span style=\"font-weight: 400;\">The basic rule of all correct Python code is simply to run without errors. However, as in all fields, there are best practices that enable developers to fine-tune their code and have a consistent style across all their projects. Pylint makes it possible to automate this task so that it doesn&#8217;t have to be done manually.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8a550c2 e-flex e-con-boxed e-con\" data-id=\"8a550c2\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d2a90d2 elementor-widget elementor-widget-heading\" data-id=\"d2a90d2\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What is Pylint?\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f5604b6 elementor-widget elementor-widget-text-editor\" data-id=\"f5604b6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Pylint is an<\/span><b> open-source tool<\/b><span style=\"font-weight: 400;\"> designed to help developers check code and its quality, detect programming errors in the <\/span><a href=\"https:\/\/datascientest.com\/en\/python-the-most-popular-programming-language\"><span style=\"font-weight: 400;\">Python language<\/span><\/a><span style=\"font-weight: 400;\"> and offer simple refactoring suggestions. It has been named according to the common Python convention with the prefix &#8220;py&#8221;. The second part of its name refers to the lint command for <\/span><b>analyzing code<\/b><span style=\"font-weight: 400;\"> written in the C language.<\/span><\/p><p><span style=\"font-weight: 400;\">In other words, Pylint checks your code without actually executing it and can make suggestions as to <\/span><b>how the code could be refactored <\/b><span style=\"font-weight: 400;\">most simply. By default, Pylint applies the rules of the Python PEP <\/span><b>8 style guide<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8c39c69 e-flex e-con-boxed e-con\" data-id=\"8c39c69\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-39a2413 elementor-widget elementor-widget-heading\" data-id=\"39a2413\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What are the main features of Pylint ?\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-07ae736 elementor-widget elementor-widget-text-editor\" data-id=\"07ae736\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Pylint is similar to other code analysis tools such as Pychecker and Pyflakes, but includes the following features:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Checking the length of each line of code<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Inspection of variable names to check compliance with project coding standards<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Checks the conformity of declared interfaces with their actual implementation<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Pylint offers great configuration flexibility, allowing you to write plugins to add your own custom checks (for example, for internal libraries or specific rules). What&#8217;s more, Pylint has an ecosystem of existing plugins for<\/span><b> popular frameworks<\/b><span style=\"font-weight: 400;\"> and <\/span><b>third-party libraries<\/b><span style=\"font-weight: 400;\">, so you can extend its functionality to suit your specific needs.<\/span><\/p><p><span style=\"font-weight: 400;\">It can be used as a stand-alone application but also integrates seamlessly into IDEs (<\/span><a href=\"https:\/\/datascientest.com\/en\/pycharm-all-about-the-most-popular-python-ide\"><span style=\"font-weight: 400;\">integrated development environments<\/span><\/a><span style=\"font-weight: 400;\">) such as <\/span><b>Visual Studio Code<\/b><span style=\"font-weight: 400;\">, <\/span><b>PyDev<\/b><span style=\"font-weight: 400;\">, and <\/span><b>Eclipse<\/b><span style=\"font-weight: 400;\">, as well as editors such as Atom, GNU Emacs, and Vim.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cbcadb1 elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"cbcadb1\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"473\" height=\"282\" src=\"https:\/\/datascientest.com\/en\/files\/2023\/06\/Pylint-2.jpg\" class=\"attachment-large size-large wp-image-169065\" alt=\"Pylint-2\" srcset=\"https:\/\/datascientest.com\/en\/files\/2023\/06\/Pylint-2.jpg 473w, https:\/\/datascientest.com\/en\/files\/2023\/06\/Pylint-2-300x179.jpg 300w\" sizes=\"(max-width: 473px) 100vw, 473px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2cdd56a elementor-widget elementor-widget-text-editor\" data-id=\"2cdd56a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Pylint&#8217;s Pyreverse module makes it easy to create UML packages and class diagrams from Python code.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">Similar &#8211; another useful tool that searches for duplicate code &#8211; is also integrated into Pylint.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ade1970 elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"ade1970\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/datascientest.com\/en\/data-courses\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn to master Pylint<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4fb3788 elementor-widget elementor-widget-text-editor\" data-id=\"4fb3788\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">How do I install and configure it?<\/span><\/p><p><span style=\"font-weight: 400;\">For command-line use, Pylint can be installed with pip, the classic Python tool:<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4a86766 elementor-widget elementor-widget-text-editor\" data-id=\"4a86766\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p style=\"padding-left: 40px;\"><strong>pip install pylint<\/strong><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7d37c16 elementor-widget__width-initial elementor-widget elementor-widget-image\" data-id=\"7d37c16\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"653\" height=\"458\" src=\"https:\/\/datascientest.com\/en\/files\/2023\/06\/Pylint-command.jpg\" class=\"attachment-large size-large wp-image-169066\" alt=\"Pylint-command\" srcset=\"https:\/\/datascientest.com\/en\/files\/2023\/06\/Pylint-command.jpg 653w, https:\/\/datascientest.com\/en\/files\/2023\/06\/Pylint-command-300x210.jpg 300w\" sizes=\"(max-width: 653px) 100vw, 653px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-04d4059 elementor-widget elementor-widget-text-editor\" data-id=\"04d4059\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">It is possible to optimize the verification and indicate several files to be analyzed or all the modules of a package simultaneously, using the following command:<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d4f4ec6 elementor-widget elementor-widget-text-editor\" data-id=\"d4f4ec6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p style=\"padding-left: 40px;\"><strong>pylint my package<\/strong><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-594ba99 elementor-widget elementor-widget-text-editor\" data-id=\"594ba99\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">However, this can be a lengthy process, as Pylint checks that the code conforms to all the rules.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">Pylint&#8217;s rules are divided into five distinct, increasingly complex categories, each represented by a letter:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C (<\/span><b>Convention<\/b><span style=\"font-weight: 400;\">): non-compliance with PEP 8 coding conventions,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">R (<\/span><b>Refactor<\/b><span style=\"font-weight: 400;\">): detection of bad practices where the code can be improved,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">W (<\/span><b>Warning<\/b><span style=\"font-weight: 400;\">): warning of problems specific to Python,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">E (<\/span><b>Error<\/b><span style=\"font-weight: 400;\">): probable detection of bugs in the code,<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">F (<\/span><b>Fatal<\/b><span style=\"font-weight: 400;\">): error preventing Pylint execution.<\/span><\/li><\/ul><p><span style=\"font-weight: 400;\">Depending on the context, some of these may not be useful. The solution would be to configure Pylint to customize the list of rules and use only those that are relevant to you.<\/span><\/p><p><span style=\"font-weight: 400;\">For example, here&#8217;s the code to disable all warnings (denoted by the letter W):<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-07b43d7 elementor-widget elementor-widget-text-editor\" data-id=\"07b43d7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p style=\"padding-left: 40px;\"><strong>$ pylint package\/module.py &#8211;disable=W<\/strong><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4a9b7c9 e-flex e-con-boxed e-con\" data-id=\"4a9b7c9\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3ece3a9 elementor-widget elementor-widget-heading\" data-id=\"3ece3a9\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Advantages and disadvantages of Pylint\n<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f3274b0 elementor-widget elementor-widget-text-editor\" data-id=\"f3274b0\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<h2><b>Pro :<\/b><\/h2><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Easy to use and install<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Applies standard coding practices in error detection<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Checks both validated code and code still undergoing testing<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Possibility of customization<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Can be integrated with common IDEs such as Visual Studio, Eclipse, etc.<\/span><\/li><\/ul><h2><b>Cons :<\/b><\/h2><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The rigidity of default rules<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Longer runtimes due to its exhaustive nature<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Some parts of the documentation are less exhaustive or less clear than other similar tools<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a5143cc e-flex e-con-boxed e-con\" data-id=\"a5143cc\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-66dcfde elementor-widget elementor-widget-heading\" data-id=\"66dcfde\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Conclusion<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c9d975 elementor-widget elementor-widget-text-editor\" data-id=\"6c9d975\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Pylint offers great configuration flexibility and allows users to write their plugins for customized checks.<\/span><\/p><p><span style=\"font-weight: 400;\">Although it has certain limitations, Pylint remains one of the most comprehensive tools on the market, enabling you to go beyond the basics and obtain consistent, error-free code.<\/span><\/p><p><span style=\"font-weight: 400;\">As an <\/span><b>open-source tool<\/b><span style=\"font-weight: 400;\">, Pylint enjoys the benefits of transparency, collaboration, and community contribution, enabling it to constantly improve and enrich its functionalities.<\/span><\/p><p><span style=\"font-weight: 400;\">And if you&#8217;d like to learn to code in Python or expand your knowledge, our <\/span><a href=\"https:\/\/datascientest.com\/en\/data-analyst-course\"><span style=\"font-weight: 400;\">Data Analyst<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/datascientest.com\/en\/data-scientist-course\"><span style=\"font-weight: 400;\">Data Scientist<\/span><\/a><span style=\"font-weight: 400;\">, and <\/span><a href=\"https:\/\/datascientest.com\/en\/data-engineer-course\"><span style=\"font-weight: 400;\">Data Engineers courses<\/span><\/a><span style=\"font-weight: 400;\"> are not to be missed!<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-02590a6 elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"02590a6\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/datascientest.com\/en\/data-courses\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span 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open-source tool designed to help developers check code and its quality, detect programming errors in the Python language and offer simple refactoring suggestions. 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