<link crossorigin="anonymous" media="all" integrity="sha512-+HeWsRssemPGuloygAOs7GmFgy7YbkHjZBpS1IjHtDIae/SjCIxQJ/fuYzcnfL/ldHiTsEhC9jk40cIqTEXDiA==" rel="stylesheet" href="https://github.githubassets.com/assets/github-075cbca7db412e75878ec493711218f4.css" />
<meta property="og:image" content="https://avatars3.githubusercontent.com/u/31963247?s=400&v=4" /><meta property="og:site_name" content="GitHub" /><meta property="og:type" content="object" /><meta property="og:title" content="nj935/Python_for_Data_Science" /><meta property="og:url" content="https://github.com/nj935/Python_for_Data_Science" /><meta property="og:description" content="Materials for the Spring 2019 course. Contribute to nj935/Python_for_Data_Science development by creating an account on GitHub." />
<meta name="google-site-verification" content="KT5gs8h0wvaagLKAVWq8bbeNwnZZK1r1XQysX3xurLU">
<meta name="google-site-verification" content="ZzhVyEFwb7w3e0-uOTltm8Jsck2F5StVihD0exw2fsA">
<meta name="google-site-verification" content="GXs5KoUUkNCoaAZn7wPN-t01Pywp9M3sEjnt_3_ZWPc">
<meta name="google-analytics" content="UA-3769691-2">
<meta name="hostname" content="github.com">
<meta name="user-login" content="nj935">
<meta name="expected-hostname" content="github.com">
<meta name="js-proxy-site-detection-payload" content="NWIyMmM5ZDRiZjhiZjUxYjJlNzZkMDBmNTU5M2E4ODA0MmJjYjQyZDY4Njg1ZTgzNGI5ZmQwNzg0NDJkNGE1NHx7InJlbW90ZV9hZGRyZXNzIjoiMTQxLjE1Ni4xNzUuMTAxIiwicmVxdWVzdF9pZCI6IkMwRTg6Mzk2NDoyODVCMTY6NENBNkEyOjVDQTRCQUJBIiwidGltZXN0YW1wIjoxNTU0Mjk5NjAzLCJob3N0IjoiZ2l0aHViLmNvbSJ9">
<meta name="enabled-features" content="UNIVERSE_BANNER,MARKETPLACE_SOCIAL_PROOF_CUSTOMERS,MARKETPLACE_TRENDING_SOCIAL_PROOF,MARKETPLACE_UNVERIFIED_LISTINGS,MARKETPLACE_PLAN_RESTRICTION_EDITOR,NOTIFY_ON_BLOCK,RELATED_ISSUES">
<link href="https://github.com/nj935/Python_for_Data_Science/commits/master.atom" rel="alternate" title="Recent Commits to Python_for_Data_Science:master" type="application/atom+xml">
<link rel="canonical" href="https://github.com/nj935/Python_for_Data_Science/blob/master/clean_code_guidelines_(PEP8).md" data-pjax-transient>
Skip to content
Issues
Marketplace
Explore
</div>
</div>
<div class="HeaderMenu d-flex flex-justify-between flex-auto">
<nav class="d-flex flex-items-center" aria-label="Global">
<div class="">
<div class="header-search mr-3 scoped-search site-scoped-search js-site-search position-relative js-jump-to"
role="combobox" aria-owns="jump-to-results" aria-label="Search or jump to" aria-haspopup="listbox" aria-expanded="false"
<div class="Box position-absolute overflow-hidden d-none jump-to-suggestions js-jump-to-suggestions-container">
- No suggested jump to results
-
<img class="avatar mr-2 flex-shrink-0 js-jump-to-suggestion-avatar d-none" alt="" aria-label="Team" src="" width="28" height="28"> <div class="jump-to-suggestion-name js-jump-to-suggestion-name flex-auto overflow-hidden text-left no-wrap css-truncate css-truncate-target"> </div> <div class="border rounded-1 flex-shrink-0 bg-gray px-1 text-gray-light ml-1 f6 d-none js-jump-to-badge-search"> <span class="js-jump-to-badge-search-text-default d-none" aria-label="in this repository"> In this repository </span> <span class="js-jump-to-badge-search-text-global d-none" aria-label="in all of GitHub"> All GitHub </span> <span aria-hidden="true" class="d-inline-block ml-1 v-align-middle">↵</span> </div> <div aria-hidden="true" class="border rounded-1 flex-shrink-0 bg-gray px-1 text-gray-light ml-1 f6 d-none d-on-nav-focus js-jump-to-badge-jump"> Jump to <span class="d-inline-block ml-1 v-align-middle">↵</span> </div> -
<img class="avatar mr-2 flex-shrink-0 js-jump-to-suggestion-avatar d-none" alt="" aria-label="Team" src="" width="28" height="28"> <div class="jump-to-suggestion-name js-jump-to-suggestion-name flex-auto overflow-hidden text-left no-wrap css-truncate css-truncate-target"> </div> <div class="border rounded-1 flex-shrink-0 bg-gray px-1 text-gray-light ml-1 f6 d-none js-jump-to-badge-search"> <span class="js-jump-to-badge-search-text-default d-none" aria-label="in this repository"> In this repository </span> <span class="js-jump-to-badge-search-text-global d-none" aria-label="in all of GitHub"> All GitHub </span> <span aria-hidden="true" class="d-inline-block ml-1 v-align-middle">↵</span> </div> <div aria-hidden="true" class="border rounded-1 flex-shrink-0 bg-gray px-1 text-gray-light ml-1 f6 d-none d-on-nav-focus js-jump-to-badge-jump"> Jump to <span class="d-inline-block ml-1 v-align-middle">↵</span> </div>
<li class="d-flex flex-justify-center flex-items-center p-0 f5 js-jump-to-suggestion">
<img src="https://github.githubassets.com/images/spinners/octocat-spinner-128.gif" alt="Octocat Spinner Icon" class="m-2" width="28">
</li>
</div>
</label>
</div>
<ul class="d-flex pl-2 flex-items-center text-bold list-style-none">
<li>
<a class="js-selected-navigation-item HeaderNavlink px-2" data-hotkey="g p" data-ga-click="Header, click, Nav menu - item:pulls context:user" aria-label="Pull requests you created" data-selected-links="/pulls /pulls/assigned /pulls/mentioned /pulls" href="/pulls">
Pull requests
<div class="d-flex">
-
<a aria-label="You have unread notifications" class="Header-link notification-indicator tooltipped tooltipped-s js-socket-channel js-notification-indicator" data-hotkey="g n" data-ga-click="Header, go to notifications, icon:unread" data-channel="notification-changed:31963247" href="/notifications"> <span class="mail-status unread"></span> <svg class="octicon octicon-bell" viewBox="0 0 14 16" version="1.1" width="14" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M14 12v1H0v-1l.73-.58c.77-.77.81-2.55 1.19-4.42C2.69 3.23 6 2 6 2c0-.55.45-1 1-1s1 .45 1 1c0 0 3.39 1.23 4.16 5 .38 1.88.42 3.66 1.19 4.42l.66.58H14zm-7 4c1.11 0 2-.89 2-2H5c0 1.11.89 2 2 2z"/></svg> -
<div class="px-3 f6 user-status-container js-user-status-context pb-1" data-url="/users/status?compact=1&link_mentions=0&truncate=1">Set your statusCould not update your status, please try again.80 remainingBusyWhen others mention you, assign you, or request your review, GitHub will let them know that you have limited availability.
Clear statusNever<ul class="dropdown-menu dropdown-menu-se pl-0 overflow-auto" style="width: 220px; max-height: 15.5em"> <li> <button type="button" class="btn-link dropdown-item js-user-status-expire-button ws-normal" title="Never"> <span class="d-inline-block text-bold mb-1">Never</span> <div class="f6 lh-condensed">Keep this status until you clear your status or edit your status.</div> </button> </li> <li class="dropdown-divider" role="separator"></li> <li> <button type="button" class="btn-link dropdown-item ws-normal js-user-status-expire-button" title="in 30 minutes" value="2019-04-03T10:23:23-04:00"> in 30 minutes </button> </li> <li> <button type="button" class="btn-link dropdown-item ws-normal js-user-status-expire-button" title="in 1 hour" value="2019-04-03T10:53:23-04:00"> in 1 hour </button> </li> <li> <button type="button" class="btn-link dropdown-item ws-normal js-user-status-expire-button" title="in 4 hours" value="2019-04-03T13:53:23-04:00"> in 4 hours </button> </li> <li> <button type="button" class="btn-link dropdown-item ws-normal js-user-status-expire-button" title="today" value="2019-04-03T23:59:59-04:00"> today </button> </li> <li> <button type="button" class="btn-link dropdown-item ws-normal js-user-status-expire-button" title="this week" value="2019-04-07T23:59:59-04:00"> this week </button> </li> </ul><include-fragment class="js-user-status-org-picker" data-url="/users/status/organizations"></include-fragment> </div> <div class="d-flex flex-items-center flex-justify-between p-3 border-top"> <button type="submit" disabled class="width-full btn btn-primary mr-2 js-user-status-submit"> Set status </button> <button type="button" disabled class="width-full js-clear-user-status-button btn ml-2 "> Clear status </button> </div></div> <div role="none" class="dropdown-divider"></div> <a role="menuitem" class="dropdown-item" href="/nj935" data-ga-click="Header, go to profile, text:your profile">Your profile</a> <a role="menuitem" class="dropdown-item" href="/nj935?tab=repositories" data-ga-click="Header, go to repositories, text:your repositories">Your repositories</a> <a role="menuitem" class="dropdown-item" href="/nj935?tab=projects" data-ga-click="Header, go to projects, text:your projects">Your projects</a> <a role="menuitem" class="dropdown-item" href="/nj935?tab=stars" data-ga-click="Header, go to starred repos, text:your stars">Your stars</a> <a role="menuitem" class="dropdown-item" href="https://gist.github.com/" data-ga-click="Header, your gists, text:your gists">Your gists</a> <div role="none" class="dropdown-divider"></div> <a role="menuitem" class="dropdown-item" href="https://help.github.com" data-ga-click="Header, go to help, text:help">Help</a> <a role="menuitem" class="dropdown-item" href="/settings/profile" data-ga-click="Header, go to settings, icon:settings">Settings</a> <!-- '"` --><!-- </textarea></xmp> --></option></form><form class="logout-form" action="/logout" accept-charset="UTF-8" method="post"><input name="utf8" type="hidden" value="✓" /><input type="hidden" name="authenticity_token" value="sjkSndSCvy1YInLQVpQVnSyoWdpjGoLGCRd+BUai2trzc1ECfQqj6AjvTfHIpNRD7h/EpIc69v9PPALPgknwDQ==" /> <button type="submit" class="dropdown-item dropdown-signout" data-ga-click="Header, sign out, icon:logout" role="menuitem"> Sign out </button>
<!-- '"` --><!-- </textarea></xmp> --></option></form><form class="sr-only right-0" action="/logout" accept-charset="UTF-8" method="post"><input name="utf8" type="hidden" value="✓" /><input type="hidden" name="authenticity_token" value="+Gatn1dsRUFwM8jrm+4fFqZJ9UzeGzcQ3ZfP0tzZJd25LO4A/uRZhCD+98oF3t7IZP5oMjo7QymbvLMYGDIPCg==" />
<button type="submit" class="dropdown-item dropdown-signout" data-ga-click="Header, sign out, icon:logout">
Sign out
</button>
<div id="js-flash-container">
<ul class="pagehead-actions">
<!-- '"` --><!-- </textarea></xmp> --></option></form><form data-remote="true" class="clearfix js-social-form js-social-container" action="/notifications/subscribe" accept-charset="UTF-8" method="post"><input name="utf8" type="hidden" value="✓" /><input type="hidden" name="authenticity_token" value="ZNitluuugzKiyZ3A+wsOtaO+91wAcUlX6rWtBXItYVIT1CeZh6e5E9LtTNJJ0t5HwgMvZaTTWZ9DMdXIZejxvw==" /> <input type="hidden" name="repository_id" value="177828798">
<details class="details-reset details-overlay select-menu float-left">
<summary class="select-menu-button float-left btn btn-sm btn-with-count" data-hydro-click="{"event_type":"repository.click","payload":{"target":"WATCH_BUTTON","repository_id":177828798,"client_id":"559676169.1547418249","originating_request_id":"C0E8:3964:285B16:4CA6A2:5CA4BABA","originating_url":"https://github.com/nj935/Python_for_Data_Science/blob/master/clean_code_guidelines_(PEP8).md","referrer":"https://github.com/nj935/Python_for_Data_Science","user_id":31963247}}" data-hydro-click-hmac="8ee3b9f59c90d42b1388a27783595b07c5e09339e35fe1eb42dcff6fe70de101" data-ga-click="Repository, click Watch settings, action:blob#show"> <span data-menu-button>
<svg class="octicon octicon-eye v-align-text-bottom" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M8.06 2C3 2 0 8 0 8s3 6 8.06 6C13 14 16 8 16 8s-3-6-7.94-6zM8 12c-2.2 0-4-1.78-4-4 0-2.2 1.8-4 4-4 2.22 0 4 1.8 4 4 0 2.22-1.78 4-4 4zm2-4c0 1.11-.89 2-2 2-1.11 0-2-.89-2-2 0-1.11.89-2 2-2 1.11 0 2 .89 2 2z"/></svg>
Watch
</span>
Notifications
Not watching
Be notified only when participating or @mentioned.
Watch
<button type="submit" name="do" value="release_only" class="select-menu-item width-full" aria-checked="false" role="menuitemradio">
<svg class="octicon octicon-check select-menu-item-icon" viewBox="0 0 12 16" version="1.1" width="12" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M12 5l-8 8-4-4 1.5-1.5L4 10l6.5-6.5L12 5z"/></svg>
<div class="select-menu-item-text">
<span class="select-menu-item-heading">Releases only</span>
<span class="description">Be notified of new releases, and when participating or @mentioned.</span>
<span class="hidden-select-button-text" data-menu-button-contents>
<svg class="octicon octicon-eye v-align-text-bottom" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M8.06 2C3 2 0 8 0 8s3 6 8.06 6C13 14 16 8 16 8s-3-6-7.94-6zM8 12c-2.2 0-4-1.78-4-4 0-2.2 1.8-4 4-4 2.22 0 4 1.8 4 4 0 2.22-1.78 4-4 4zm2-4c0 1.11-.89 2-2 2-1.11 0-2-.89-2-2 0-1.11.89-2 2-2 1.11 0 2 .89 2 2z"/></svg>
Unwatch releases
</span>
</div>
</button>
<button type="submit" name="do" value="subscribed" class="select-menu-item width-full" aria-checked="false" role="menuitemradio">
<svg class="octicon octicon-check select-menu-item-icon" viewBox="0 0 12 16" version="1.1" width="12" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M12 5l-8 8-4-4 1.5-1.5L4 10l6.5-6.5L12 5z"/></svg>
<div class="select-menu-item-text">
<span class="select-menu-item-heading">Watching</span>
<span class="description">Be notified of all conversations.</span>
<span class="hidden-select-button-text" data-menu-button-contents>
<svg class="octicon octicon-eye v-align-text-bottom" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M8.06 2C3 2 0 8 0 8s3 6 8.06 6C13 14 16 8 16 8s-3-6-7.94-6zM8 12c-2.2 0-4-1.78-4-4 0-2.2 1.8-4 4-4 2.22 0 4 1.8 4 4 0 2.22-1.78 4-4 4zm2-4c0 1.11-.89 2-2 2-1.11 0-2-.89-2-2 0-1.11.89-2 2-2 1.11 0 2 .89 2 2z"/></svg>
Unwatch
</span>
</div>
</button>
<button type="submit" name="do" value="ignore" class="select-menu-item width-full" aria-checked="false" role="menuitemradio">
<svg class="octicon octicon-check select-menu-item-icon" viewBox="0 0 12 16" version="1.1" width="12" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M12 5l-8 8-4-4 1.5-1.5L4 10l6.5-6.5L12 5z"/></svg>
<div class="select-menu-item-text">
<span class="select-menu-item-heading">Ignoring</span>
<span class="description">Never be notified.</span>
<span class="hidden-select-button-text" data-menu-button-contents>
<svg class="octicon octicon-mute v-align-text-bottom" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M8 2.81v10.38c0 .67-.81 1-1.28.53L3 10H1c-.55 0-1-.45-1-1V7c0-.55.45-1 1-1h2l3.72-3.72C7.19 1.81 8 2.14 8 2.81zm7.53 3.22l-1.06-1.06-1.97 1.97-1.97-1.97-1.06 1.06L11.44 8 9.47 9.97l1.06 1.06 1.97-1.97 1.97 1.97 1.06-1.06L13.56 8l1.97-1.97z"/></svg>
Stop ignoring
</span>
</div>
</button>
</div>
</details-menu>
</details>
<a class="social-count js-social-count"
href="/nj935/Python_for_Data_Science/watchers"
aria-label="0 users are watching this repository">
0
</a>
Fork
If this dialog fails to load, you can visit the fork page directly.
<a href="/nj935/Python_for_Data_Science/network/members" class="social-count"
aria-label="0 users forked this repository">
0
</a>
<h1 class="public ">
</div>
<span itemscope itemtype="http://schema.org/ListItem" itemprop="itemListElement">
<a itemprop="url" data-hotkey="g i" class="js-selected-navigation-item reponav-item" data-selected-links="repo_issues repo_labels repo_milestones /nj935/Python_for_Data_Science/issues" href="/nj935/Python_for_Data_Science/issues">
<svg class="octicon octicon-issue-opened" viewBox="0 0 14 16" version="1.1" width="14" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7 2.3c3.14 0 5.7 2.56 5.7 5.7s-2.56 5.7-5.7 5.7A5.71 5.71 0 0 1 1.3 8c0-3.14 2.56-5.7 5.7-5.7zM7 1C3.14 1 0 4.14 0 8s3.14 7 7 7 7-3.14 7-7-3.14-7-7-7zm1 3H6v5h2V4zm0 6H6v2h2v-2z"/></svg>
<span itemprop="name">Issues</span>
<span class="Counter">0</span>
<meta itemprop="position" content="2">
Pull requests 0
<a data-hotkey="g b" class="js-selected-navigation-item reponav-item" data-selected-links="repo_projects new_repo_project repo_project /nj935/Python_for_Data_Science/projects" href="/nj935/Python_for_Data_Science/projects">
<svg class="octicon octicon-project" viewBox="0 0 15 16" version="1.1" width="15" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M10 12h3V2h-3v10zm-4-2h3V2H6v8zm-4 4h3V2H2v12zm-1 1h13V1H1v14zM14 0H1a1 1 0 0 0-1 1v14a1 1 0 0 0 1 1h13a1 1 0 0 0 1-1V1a1 1 0 0 0-1-1z"/></svg>
Projects
<span class="Counter" >0</span>
<a class="js-selected-navigation-item reponav-item" data-hotkey="g w" data-selected-links="repo_wiki /nj935/Python_for_Data_Science/wiki" href="/nj935/Python_for_Data_Science/wiki">
<svg class="octicon octicon-book" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M3 5h4v1H3V5zm0 3h4V7H3v1zm0 2h4V9H3v1zm11-5h-4v1h4V5zm0 2h-4v1h4V7zm0 2h-4v1h4V9zm2-6v9c0 .55-.45 1-1 1H9.5l-1 1-1-1H2c-.55 0-1-.45-1-1V3c0-.55.45-1 1-1h5.5l1 1 1-1H15c.55 0 1 .45 1 1zm-8 .5L7.5 3H2v9h6V3.5zm7-.5H9.5l-.5.5V12h6V3z"/></svg>
Wiki
<a class="d-none js-permalink-shortcut" data-hotkey="y" href="/nj935/Python_for_Data_Science/blob/56e3e5359f428e12c475cb9fd567ddaaf93c0d3f/clean_code_guidelines_(PEP8).md">Permalink</a>
<!-- blob contrib key: blob_contributors:v21:db40984e816f178058d2dda30db554a6 -->
<div class="d-flex flex-shrink-0 flex-items-center mb-3">
title="Switch branches or tags">
<i>Branch:</i>
<span class="css-truncate-target">master</span>
<div id="blob-path" class="breadcrumb flex-auto ml-2">
<span class="js-repo-root text-bold"><span class="js-path-segment"><a data-pjax="true" href="/nj935/Python_for_Data_Science"><span>Python_for_Data_Science</span></a></span></span><span class="separator">/</span><strong class="final-path">clean_code_guidelines_(PEP8).md</strong>
</div>
<div class="BtnGroup">
<a href="/nj935/Python_for_Data_Science/find/master"
class="js-pjax-capture-input btn btn-sm BtnGroup-item"
data-pjax
data-hotkey="t">
Find file
</a>
<clipboard-copy for="blob-path" class="btn btn-sm BtnGroup-item">
Copy path
</clipboard-copy>
</div>
</div>
nj935
Update clean_code_guidelines_(PEP8).md
c9a459d
Mar 26, 2019
<div class="Box-body d-flex flex-items-center flex-auto f6 border-bottom-0" >
<details class="details-reset details-overlay details-overlay-dark lh-default text-gray-dark float-left mr-2" id="blob_contributors_box" >
<summary class="btn-link" aria-haspopup="dialog">
<span><strong>1</strong> contributor</span>
</summary>
<details-dialog class="Box Box--overlay d-flex flex-column anim-fade-in fast" aria-label="Users who have contributed to this file">
<div class="Box-header">
<button class="Box-btn-octicon btn-octicon float-right" type="button" aria-label="Close dialog" data-close-dialog>
<svg class="octicon octicon-x" viewBox="0 0 12 16" version="1.1" width="12" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.48 8l3.75 3.75-1.48 1.48L6 9.48l-3.75 3.75-1.48-1.48L4.52 8 .77 4.25l1.48-1.48L6 6.52l3.75-3.75 1.48 1.48L7.48 8z"/></svg>
</button>
<h3 class="Box-title">
Users who have contributed to this file
</h3>
</div>
<ul class="list-style-none overflow-auto">
<li class="Box-row">
<a class="link-gray-dark no-underline" href="/nj935">
<img class="avatar mr-1" alt="" src="https://avatars3.githubusercontent.com/u/31963247?s=40&v=4" width="20" height="20" />
nj935
</details-dialog>
</details>
</div>
<div class="Box mt-3 position-relative">
79 lines (60 sloc)
1.51 KB
<div class="BtnGroup">
<a id="raw-url" class="btn btn-sm BtnGroup-item" href="/nj935/Python_for_Data_Science/raw/master/clean_code_guidelines_(PEP8).md">Raw</a>
<a class="btn btn-sm js-update-url-with-hash BtnGroup-item" data-hotkey="b" href="/nj935/Python_for_Data_Science/blame/master/clean_code_guidelines_(PEP8).md">Blame</a>
<a rel="nofollow" class="btn btn-sm BtnGroup-item" href="/nj935/Python_for_Data_Science/commits/master/clean_code_guidelines_(PEP8).md">History</a>
</div>
<div>
<a class="btn-octicon tooltipped tooltipped-nw"
href="x-github-client://openRepo/https://github.com/nj935/Python_for_Data_Science?branch=master&filepath=clean_code_guidelines_%28PEP8%29.md"
aria-label="Open this file in GitHub Desktop"
data-ga-click="Repository, open with desktop, type:mac">
<svg class="octicon octicon-device-desktop" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M15 2H1c-.55 0-1 .45-1 1v9c0 .55.45 1 1 1h5.34c-.25.61-.86 1.39-2.34 2h8c-1.48-.61-2.09-1.39-2.34-2H15c.55 0 1-.45 1-1V3c0-.55-.45-1-1-1zm0 9H1V3h14v8z"/></svg>
</a>
<!-- '"` --><!-- </textarea></xmp> --></option></form><form class="inline-form js-update-url-with-hash" action="/nj935/Python_for_Data_Science/edit/master/clean_code_guidelines_(PEP8).md" accept-charset="UTF-8" method="post"><input name="utf8" type="hidden" value="✓" /><input type="hidden" name="authenticity_token" value="IfHN8O5TclPOOUlQPIVfFm/waWBTHZsT/l799HOOE1hVdA0k4IQrtePA+VNpseJklaBz+gUHrm4StRThrcMryg==" />
<button class="btn-octicon tooltipped tooltipped-nw" type="submit"
aria-label="Edit this file" data-hotkey="e" data-disable-with>
<svg class="octicon octicon-pencil" viewBox="0 0 14 16" version="1.1" width="14" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M0 12v3h3l8-8-3-3-8 8zm3 2H1v-2h1v1h1v1zm10.3-9.3L12 6 9 3l1.3-1.3a.996.996 0 0 1 1.41 0l1.59 1.59c.39.39.39 1.02 0 1.41z"/></svg>
</button>
Clear and well-written code is important. The main set of conventions for Python, written by Guido Van Rossum, is called PEP8.
For our course, remember the following:
1. Maximum line length
- Lines of code shouldn't exceed 79 characters.
- To comply with this, break code into several lines by wrapping expressions in parentheses.
2. Imports
- Import libraries at the top of your notebook. Use a new line for each import.
- Learn the conventional shortened names for common libraries (eg. import pandas as pd).
YES: import sys import os
NO: import sys, os
3. Declaring strings
- Python lets you use single quotes or double quotes around strings; pick one option and stick to it.
YES: string1 = 'I love Python' string2 = 'not R'
NO: string1 = "I love Python" string2 = 'not R'
4. Whitespace
- Use spaces between operators
- Be consistent and don't add redundant whitespace.
YES:
a = b + c
spam(ham[1], {eggs: 2})
NO:
a=b+c
spam( ham[ 1 ], { eggs: 2 } )
5. Comments
- Start comments with # and a single space.
YES: x = x + 1 # Increment x
6. Naming
- Function and variable names should be lowercase, with underscores between the words as necessary to improve readability.
- Use descriptive variable names.
YES: mean_trip_time = []
PROBABLY NOT: mtt = []
</div>
Go
</main>
<a aria-label="Homepage" title="GitHub" class="footer-octicon mx-lg-4" href="https://github.com">
<svg height="24" class="octicon octicon-mark-github" viewBox="0 0 16 16" version="1.1" width="24" aria-hidden="true"><path fill-rule="evenodd" d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.013 8.013 0 0 0 16 8c0-4.42-3.58-8-8-8z"/></svg>
You can’t perform that action at this time.
<script crossorigin="anonymous" integrity="sha512-tEFti6nF1hBd4GQkgKYMs3eNp6ezhYHYiZBTDLaIhGDhFXca1JMrdgvzRCxp91tXzg3bnIn3NqA2f7EMJ672bQ==" type="application/javascript" src="https://github.githubassets.com/assets/frameworks-c3fed18a.js"></script>
<script crossorigin="anonymous" async="async" integrity="sha512-RTnNZaEfRdIW5qcxvSKBrlnT+vCt8dL6JB20e8euvp288G90XIjNlq4EEJg0XqsyvkRrOevCXlqIA4tt2aoHrw==" type="application/javascript" src="https://github.githubassets.com/assets/github-bootstrap-bff57258.js"></script>
You signed in with another tab or window. Reload to refresh your session.
You signed out in another tab or window. Reload to refresh your session.