add Poll data analysis project, misc changes

Author: learnbyexample

404.html

@@ -32,12 +32,12 @@
             }
             html.classList.remove('sidebar-visible');
             html.classList.add("sidebar-" + sidebar);
-        </script><nav id=sidebar class=sidebar aria-label="Table of contents"><div class=sidebar-scrollbox><ol class=chapter><li class="chapter-item expanded"><a href=preface.html><strong aria-hidden=true>1.</strong> Preface</a><li class="chapter-item expanded"><a href=calculator.html><strong aria-hidden=true>2.</strong> CLI Calculator</a><li><ol class=section><li class="chapter-item expanded"><a href=calc_bash_func.html><strong aria-hidden=true>2.1.</strong> Bash shortcuts</a><li class="chapter-item expanded"><a href=calc_py_cli.html><strong aria-hidden=true>2.2.</strong> Python CLI application</a></ol></ol></div><div id=sidebar-resize-handle class=sidebar-resize-handle></div></nav><div id=page-wrapper class=page-wrapper><div class=page><div id=menu-bar-hover-placeholder></div><div id=menu-bar class="menu-bar sticky bordered"><div class=left-buttons><button id=sidebar-toggle class=icon-button type=button title="Toggle Table of Contents"aria-label="Toggle Table of Contents"aria-controls=sidebar><i class="fa fa-bars"></i></button><button id=theme-toggle class=icon-button type=button title="Change theme"aria-label="Change theme"aria-haspopup=true aria-expanded=false aria-controls=theme-list><i class="fa fa-paint-brush"></i></button><ul id=theme-list class=theme-popup aria-label=Themes role=menu><li role=none><button role=menuitem class=theme id=light>Light</button><li role=none><button role=menuitem class=theme id=rust>Rust (default)</button><li role=none><button role=menuitem class=theme id=coal>Coal</button><li role=none><button role=menuitem class=theme id=navy>Navy</button><li role=none><button role=menuitem class=theme id=ayu>Ayu</button></ul><button id=search-toggle class=icon-button type=button title="Search. (Shortkey: s)"aria-label="Toggle Searchbar"aria-expanded=false aria-keyshortcuts=S aria-controls=searchbar><i class="fa fa-search"></i></button></div><h1 class=menu-title>Practice Python Projects</h1><div class=right-buttons><a href=https://github.com/learnbyexample/practice_python_projects title="Git repository"aria-label="Git repository"> <i id=git-repository-button class="fa fa-github"></i> </a></div></div><div id=search-wrapper class=hidden><form id=searchbar-outer class=searchbar-outer><input type=search name=search id=searchbar name=searchbar placeholder="Search this book ..."aria-controls=searchresults-outer aria-describedby=searchresults-header></form><div id=searchresults-outer class="searchresults-outer hidden"><div id=searchresults-header class=searchresults-header></div><ul id=searchresults></ul></div></div><script>
+        </script><nav id=sidebar class=sidebar aria-label="Table of contents"><div class=sidebar-scrollbox><ol class=chapter><li class="chapter-item expanded affix"><a href=preface.html>Preface</a><li class="chapter-item expanded"><a href=calculator/calculator.html><strong aria-hidden=true>1.</strong> CLI Calculator</a><li><ol class=section><li class="chapter-item expanded"><a href=calculator/calc_bash_func.html><strong aria-hidden=true>1.1.</strong> Bash shortcuts</a><li class="chapter-item expanded"><a href=calculator/calc_py_cli.html><strong aria-hidden=true>1.2.</strong> Python CLI application</a></ol><li class="chapter-item expanded"><a href=poll_data_analysis/poll_data_analysis.html><strong aria-hidden=true>2.</strong> Analyzing poll data</a><li><ol class=section><li class="chapter-item expanded"><a href=poll_data_analysis/praw.html><strong aria-hidden=true>2.1.</strong> Getting Reddit comments using praw</a><li class="chapter-item expanded"><a href=poll_data_analysis/data_cleansing.html><strong aria-hidden=true>2.2.</strong> Data cleansing</a><li class="chapter-item expanded"><a href=poll_data_analysis/data_similarity.html><strong aria-hidden=true>2.3.</strong> Data similarity</a><li class="chapter-item expanded"><a href=poll_data_analysis/data_results.html><strong aria-hidden=true>2.4.</strong> Displaying results</a></ol></li><br><hr><li class="chapter-item expanded"><i id=git-repository-button class="fa fa-github"></i><a href=https://github.com/learnbyexample/practice_python_projects>   Source code</a><li class="chapter-item expanded"><i id=home-button class="fa fa-home"></i><a href=https://learnbyexample.github.io/>   My Blog</a><li class="chapter-item expanded"><i id=book-button class="fa fa-book"></i><a href=https://learnbyexample.github.io/books/>   My Books</a></ol></div><div id=sidebar-resize-handle class=sidebar-resize-handle></div></nav><div id=page-wrapper class=page-wrapper><div class=page><div id=menu-bar-hover-placeholder></div><div id=menu-bar class="menu-bar sticky bordered"><div class=left-buttons><button id=sidebar-toggle class=icon-button type=button title="Toggle Table of Contents"aria-label="Toggle Table of Contents"aria-controls=sidebar><i class="fa fa-bars"></i></button><button id=theme-toggle class=icon-button type=button title="Change theme"aria-label="Change theme"aria-haspopup=true aria-expanded=false aria-controls=theme-list><i class="fa fa-paint-brush"></i></button><ul id=theme-list class=theme-popup aria-label=Themes role=menu><li role=none><button role=menuitem class=theme id=light>Light</button><li role=none><button role=menuitem class=theme id=rust>Rust (default)</button><li role=none><button role=menuitem class=theme id=coal>Coal</button><li role=none><button role=menuitem class=theme id=navy>Navy</button><li role=none><button role=menuitem class=theme id=ayu>Ayu</button></ul><button id=search-toggle class=icon-button type=button title="Search. (Shortkey: s)"aria-label="Toggle Searchbar"aria-expanded=false aria-keyshortcuts=S aria-controls=searchbar><i class="fa fa-search"></i></button></div><h1 class=menu-title>Practice Python Projects</h1><div class=right-buttons><a href=https://learnbyexample.github.io title=Blog aria-label=Blog> <i id=home-button class="fa fa-home"></i> </a><a href=https://github.com/learnbyexample/practice_python_projects title="Git repository"aria-label="Git repository"> <i id=git-repository-button class="fa fa-github"></i> </a></div></div><div id=search-wrapper class=hidden><form id=searchbar-outer class=searchbar-outer><input type=search name=search id=searchbar name=searchbar placeholder="Search this book ..."aria-controls=searchresults-outer aria-describedby=searchresults-header></form><div id=searchresults-outer class="searchresults-outer hidden"><div id=searchresults-header class=searchresults-header></div><ul id=searchresults></ul></div></div><script>
                     document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
                     document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
                     Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
                         link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
                     });
-                </script><div id=content class=content><main><div class=sidetoc><nav class=pagetoc></nav></div><h1><a class=header href=#document-not-found-404 id=document-not-found-404>Document not found (404)</a></h1><p>This URL is invalid, sorry. Please use the navigation bar or search to continue.</main><nav class=nav-wrapper aria-label="Page navigation"><div style="clear: both"></div></nav></div></div><nav class=nav-wide-wrapper aria-label="Page navigation"></nav></div><script>
+                </script><div id=content class=content><main><div class=sidetoc><nav class=pagetoc></nav></div><h1 id=document-not-found-404><a class=header href=#document-not-found-404>Document not found (404)</a></h1><p>This URL is invalid, sorry. Please use the navigation bar or search to continue.</main><nav class=nav-wrapper aria-label="Page navigation"><div style="clear: both"></div></nav></div></div><nav class=nav-wide-wrapper aria-label="Page navigation"></nav></div><script>
             window.playground_copyable = true;
         </script><script src=elasticlunr.min.js charset=utf-8></script><script src=mark.min.js charset=utf-8></script><script src=searcher.js charset=utf-8></script><script src=clipboard.min.js charset=utf-8></script><script src=highlight.js charset=utf-8></script><script src=book.js charset=utf-8></script><script src=sidebar.js></script>