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GeezerVison is showing github.com — fullstackpython.com/debugging.html at gh-pages · m4s0/fullstackpython.com Expand file tree/ Copy pathdebugging.htmlMore file actions 212 lines (211 loc) · 18.7 KB / Copy pathdebugging.htmlFile metadata and controls212 lines (211 loc) · 18.7 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="author" content="Matt Makai"> <meta name="description" content="Debugging involves instrumenting, isolating and hunting defects in running code. Learn more about debugging on Full Stack Python."> <link rel="shortcut icon" href="https://static.fullstackpython.com/fsp-fav.png"> <title>Debugging - Full Stack Python</title> <!--[if lt IE 9]> <script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script> <script src="https://oss.maxcdn.com/libs/respond.js/1.3.0/respond.min.js"></script> <![endif]--> <link href="theme/css/f.min.css" rel="stylesheet"> </head> <body> <div style="padding: 0 0 20px 0; margin: 0 0 20px 0; background-color: #22B24C;"> <div class="container"> <h2 style="color: #fff; margin: 20px 40px 0 0;"><a href="https://www.gumroad.com/l/python-deployments" style="color: #fff">The Full Stack Python Guide to Deployments book</a> has been released!</h2> </div> </div> <a href="https://github.com/makaimc/fullstackpython.com"><img style="position: absolute; top: 0; right: 0; border: 0;" src="/theme/img/fork.png" alt="Fork me on GitHub"></a> <div class="container"> <div class="row"> <div class="col-md-12"> <div class="logo-header-section"> <a href="/" style="text-decoration: none; border: none;"><img src="theme/img/logo.png" height="52" width="52" class="logo-image" style="padding-top: 1px;" alt="Full Stack Python logo"></a> <span class="logo-title"><a href="/">Full Stack Python</a></span> </div> </div> </div><div class="row"> <div class="col-md-8"> <h1>Debugging</h1> <p>Developers often find themselves in situations where the code they've written is not working quite right. When that happens, a developer debugs their code by instrumenting, executing and inspecting the code to determine what state of the application does not match the assumptions of how the code should be correctly running.</p> <h2>Why is debugging important?</h2> <p>There are bugs in every modest sized or larger application. Every developer has to learn how to debug code in order to write programs that work as correctly as time and budget allow.</p> <h3>Debugging resources</h3> <ul> <li> <p><a href="http://howchoo.com/g/zgi2y2iwyze/debugging-your-python-code">Debugging your Python code</a> walks through a scenario where <a href="https://docs.python.org/2/library/pdb.html">pdb</a> can be used to find a defect in a block of Python code.</p> </li> <li> <p><a href="https://pymotw.com/2/pdb/">pdb - Interactive Debugger</a> is featured on the Python Module of the Week blog and has some great detail on using the program effectively.</p> </li> <li> <p><a href="http://blog.ionelmc.ro/2013/06/05/python-debugging-tools/">Python debugging tools</a> provides a list of tools such as pdb and its derivatives ipdb, pudb and pdb++ along with how they can be used in the hunt for defects.</p> </li> <li> <p><a href="https://pythonconquerstheuniverse.wordpress.com/2009/09/10/debugging-in-python/">Debugging in Python</a> elaborates on what pdb does and how it can be used.</p> </li> </ul> <h3>What's next after testing your application?</h3> <div class="row"> <div class="col-md-4"> <div class="well select-next"> <a href="/code-metrics.html" class="btn btn-success btn-full"><svg width="28" height="30" viewBox="0 0 1792 1792" xmlns="http://www.w3.org/2000/svg"><path d="M1596 380q28 28 48 76t20 88v1152q0 40-28 68t-68 28h-1344q-40 0-68-28t-28-68v-1600q0-40 28-68t68-28h896q40 0 88 20t76 48zm-444-244v376h376q-10-29-22-41l-313-313q-12-12-41-22zm384 1528v-1024h-416q-40 0-68-28t-28-68v-416h-768v1536h1280zm-1024-864q0-14 9-23t23-9h704q14 0 23 9t9 23v64q0 14-9 23t-23 9h-704q-14 0-23-9t-9-23v-64zm736 224q14 0 23 9t9 23v64q0 14-9 23t-23 9h-704q-14 0-23-9t-9-23v-64q0-14 9-23t23-9h704zm0 256q14 0 23 9t9 23v64q0 14-9 23t-23 9h-704q-14 0-23-9t-9-23v-64q0-14 9-23t23-9h704z" fill="#fff"/></svg></a> <p class="under-btn">What code metrics should I be aware of?</p> </div> </div> <div class="col-md-4"> <div class="well select-next"> <a href="/continuous-integration.html" class="btn btn-success btn-full"><svg width="28" height="30" viewBox="0 0 1792 1792" xmlns="http://www.w3.org/2000/svg"><path d="M1639 1056q0 5-1 7-64 268-268 434.5t-478 166.5q-146 0-282.5-55t-243.5-157l-129 129q-19 19-45 19t-45-19-19-45v-448q0-26 19-45t45-19h448q26 0 45 19t19 45-19 45l-137 137q71 66 161 102t187 36q134 0 250-65t186-179q11-17 53-117 8-23 30-23h192q13 0 22.5 9.5t9.5 22.5zm25-800v448q0 26-19 45t-45 19h-448q-26 0-45-19t-19-45 19-45l138-138q-148-137-349-137-134 0-250 65t-186 179q-11 17-53 117-8 23-30 23h-199q-13 0-22.5-9.5t-9.5-22.5v-7q65-268 270-434.5t480-166.5q146 0 284 55.5t245 156.5l130-129q19-19 45-19t45 19 19 45z" fill="#fff"/></svg></a> <p class="under-btn">Can I automate testing and deployments for my app?</p> </div> </div> <div class="col-md-4"> <div class="well select-next"> <a href="/unit-testing.html" class="btn btn-success btn-full"><svg width="28" height="30" viewBox="0 0 1792 1792" xmlns="http://www.w3.org/2000/svg"><path d="M512 1248v192q0 40-28 68t-68 28h-320q-40 0-68-28t-28-68v-192q0-40 28-68t68-28h320q40 0 68 28t28 68zm0-512v192q0 40-28 68t-68 28h-320q-40 0-68-28t-28-68v-192q0-40 28-68t68-28h320q40 0 68 28t28 68zm640 512v192q0 40-28 68t-68 28h-320q-40 0-68-28t-28-68v-192q0-40 28-68t68-28h320q40 0 68 28t28 68zm-640-1024v192q0 40-28 68t-68 28h-320q-40 0-68-28t-28-68v-192q0-40 28-68t68-28h320q40 0 68 28t28 68zm640 512v192q0 40-28 68t-68 28h-320q-40 0-68-28t-28-68v-192q0-40 28-68t68-28h320q40 0 68 28t28 68zm640 512v192q0 40-28 68t-68 28h-320q-40 0-68-28t-28-68v-192q0-40 28-68t68-28h320q40 0 68 28t28 68zm-640-1024v192q0 40-28 68t-68 28h-320q-40 0-68-28t-28-68v-192q0-40 28-68t68-28h320q40 0 68 28t28 68zm640 512v192q0 40-28 68t-68 28h-320q-40 0-68-28t-28-68v-192q0-40 28-68t68-28h320q40 0 68 28t28 68zm0-512v192q0 40-28 68t-68 28h-320q-40 0-68-28t-28-68v-192q0-40 28-68t68-28h320q40 0 68 28t28 68z" fill="#fff"/></svg></a> <p class="under-btn">How do I create unit tests?</p> </div> </div> </div><div id="mc_embed_signup"> <form action="//mattmakai.us2.list-manage.com/subscribe/post?u=b7e774f0c4f05dcebbfee183d&id=b22335388d" method="post" id="mc-embedded-subscribe-form" name="mc-embedded-subscribe-form" class="validate" target="_blank" novalidate> <div id="mc_embed_signup_scroll"> <h4>Sign up here to receive an email with major updates to this site and Python tutorials delivered to your inbox once a month.</h4> <div class="row"> <div class="col-md-9"> <input type="email" value="" name="EMAIL" class="email form-control" id="mce-EMAIL" placeholder="email address" required> <div style="position: absolute; 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Learn more about <a href="http://www.deploypython.com/">The Full Stack Python Guide to Deployments book</a>. </p> </div> </div> <div class="panel panel-success"> <div class="panel-heading"> <h3 class="panel-head"><a href="/table-of-contents.html" style="color: #fff;">Table of Contents</a></h3> </div> <div class="list-group"> <a href="/introduction.html" class="list-group-item smaller-item " style='font-family: "Helvetica Neue",sans-serif;'>Introduction</a> <a href="/learning-programming.html" class="list-group-item smaller-item " style='font-family: "Helvetica Neue",sans-serif;'>Learning Programming</a> <a href="/why-use-python.html" class="list-group-item smaller-item " style='font-family: "Helvetica Neue",sans-serif;'>Why Use Python?</a> <a href="/python-2-or-3.html" class="list-group-item smaller-item " style='font-family: "Helvetica Neue",sans-serif;'>Python 2 or 3?</a> <a href="/enterprise-python.html" class="list-group-item smaller-item " style='font-family: "Helvetica 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href="/what-full-stack-means.html" class="list-group-item smaller-item " style='font-family: "Helvetica Neue",sans-serif;'>What "Full Stack" Means</a> <a href="/change-log.html" class="list-group-item smaller-item " style='font-family: "Helvetica Neue",sans-serif;'>Change Log</a> <a href="/future-directions.html" class="list-group-item smaller-item " style='font-family: "Helvetica Neue",sans-serif;'>Future Directions</a> <a href="/about-author.html" class="list-group-item smaller-item " style='font-family: "Helvetica Neue",sans-serif;'>About the Author</a> </div> </div> <div class="panel panel-success"> <div class="panel-body"> <a href="http://www.deploypython.com/"><img src="https://static.fullstackpython.com/fsp-deployment-guide.png" alt="The Full Stack Python Guide to Deployments" width="100%"></a> <p style="font-size: .8em; margin-top: 10px;">Searching for a complete, step-by-step deployment walkthrough? Learn more about <a href="http://www.deploypython.com/">The Full Stack Python Guide to Deployments book</a>. </p> </div> </div> <div class="panel panel-success"> <div class="panel-heading"><h3 class="panel-head">Debugging</h3></div> <div class="panel-body"> Major updates are tweeted via <a href="https://twitter.com/fullstackpython">@fullstackpython</a>. <hr/> Need more detailed tutorials than you see here? <a href="http://www.deploypython.com/">Learn more about The Full Stack Python Guide to Deployments book.</a> </div> </div> </div></div> <hr/> </div> <div class="container"> <div class="footer pull-right"> <a href="http://www.mattmakai.com/" class="underline">Matt Makai</a> 2015 </div> </div> <script> (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) })(window,document,'script','//www.google-analytics.com/analytics.js','ga'); ga('create', 'UA-19910497-7', 'auto'); ga('send', 'pageview'); </script> <script type='text/javascript'> var trackOutboundLink = function(url) { ga('send', 'event', 'outbound', 'click', url, {'hitCallback': function () { document.location = url; } }); } </script> </body> </html> |
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