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  <div class="section" id="idle">
<span id="id1"></span><h1>24.6. IDLE<a class="headerlink" href="#idle" title="Permalink to this headline">¶</a></h1>
<p id="index-0">IDLE is the Python IDE built with the <tt class="xref py py-mod docutils literal"><span class="pre">tkinter</span></tt> GUI toolkit.</p>
<p>IDLE has the following features:</p>
<ul class="simple">
<li>coded in 100% pure Python, using the <tt class="xref py py-mod docutils literal"><span class="pre">tkinter</span></tt> GUI toolkit</li>
<li>cross-platform: works on Windows and Unix</li>
<li>multi-window text editor with multiple undo, Python colorizing and many other
features, e.g. smart indent and call tips</li>
<li>Python shell window (a.k.a. interactive interpreter)</li>
<li>debugger (not complete, but you can set breakpoints, view  and step)</li>
</ul>
<div class="section" id="menus">
<h2>24.6.1. Menus<a class="headerlink" href="#menus" title="Permalink to this headline">¶</a></h2>
<div class="section" id="file-menu">
<h3>24.6.1.1. File menu<a class="headerlink" href="#file-menu" title="Permalink to this headline">¶</a></h3>
<dl class="docutils">
<dt>New window</dt>
<dd>create a new editing window</dd>
<dt>Open...</dt>
<dd>open an existing file</dd>
<dt>Open module...</dt>
<dd>open an existing module (searches sys.path)</dd>
<dt>Class browser</dt>
<dd>show classes and methods in current file</dd>
<dt>Path browser</dt>
<dd>show sys.path directories, modules, classes and methods</dd>
</dl>
<dl class="docutils" id="index-1">
<dt>Save</dt>
<dd>save current window to the associated file (unsaved windows have a * before and
after the window title)</dd>
<dt>Save As...</dt>
<dd>save current window to new file, which becomes the associated file</dd>
<dt>Save Copy As...</dt>
<dd>save current window to different file without changing the associated file</dd>
<dt>Close</dt>
<dd>close current window (asks to save if unsaved)</dd>
<dt>Exit</dt>
<dd>close all windows and quit IDLE (asks to save if unsaved)</dd>
</dl>
</div>
<div class="section" id="edit-menu">
<h3>24.6.1.2. Edit menu<a class="headerlink" href="#edit-menu" title="Permalink to this headline">¶</a></h3>
<dl class="docutils">
<dt>Undo</dt>
<dd>Undo last change to current window (max 1000 changes)</dd>
<dt>Redo</dt>
<dd>Redo last undone change to current window</dd>
<dt>Cut</dt>
<dd>Copy selection into system-wide clipboard; then delete selection</dd>
<dt>Copy</dt>
<dd>Copy selection into system-wide clipboard</dd>
<dt>Paste</dt>
<dd>Insert system-wide clipboard into window</dd>
<dt>Select All</dt>
<dd>Select the entire contents of the edit buffer</dd>
<dt>Find...</dt>
<dd>Open a search dialog box with many options</dd>
<dt>Find again</dt>
<dd>Repeat last search</dd>
<dt>Find selection</dt>
<dd>Search for the string in the selection</dd>
<dt>Find in Files...</dt>
<dd>Open a search dialog box for searching files</dd>
<dt>Replace...</dt>
<dd>Open a search-and-replace dialog box</dd>
<dt>Go to line</dt>
<dd>Ask for a line number and show that line</dd>
<dt>Indent region</dt>
<dd>Shift selected lines right 4 spaces</dd>
<dt>Dedent region</dt>
<dd>Shift selected lines left 4 spaces</dd>
<dt>Comment out region</dt>
<dd>Insert ## in front of selected lines</dd>
<dt>Uncomment region</dt>
<dd>Remove leading # or ## from selected lines</dd>
<dt>Tabify region</dt>
<dd>Turns <em>leading</em> stretches of spaces into tabs</dd>
<dt>Untabify region</dt>
<dd>Turn <em>all</em> tabs into the right number of spaces</dd>
<dt>Expand word</dt>
<dd>Expand the word you have typed to match another word in the same buffer; repeat
to get a different expansion</dd>
<dt>Format Paragraph</dt>
<dd>Reformat the current blank-line-separated paragraph</dd>
<dt>Import module</dt>
<dd>Import or reload the current module</dd>
<dt>Run script</dt>
<dd>Execute the current file in the __main__ namespace</dd>
</dl>
</div>
<div class="section" id="windows-menu">
<span id="index-2"></span><h3>24.6.1.3. Windows menu<a class="headerlink" href="#windows-menu" title="Permalink to this headline">¶</a></h3>
<dl class="docutils">
<dt>Zoom Height</dt>
<dd>toggles the window between normal size (24x80) and maximum height.</dd>
</dl>
<p>The rest of this menu lists the names of all open windows; select one to bring
it to the foreground (deiconifying it if necessary).</p>
</div>
<div class="section" id="debug-menu">
<h3>24.6.1.4. Debug menu<a class="headerlink" href="#debug-menu" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>in the Python Shell window only</li>
</ul>
<dl class="docutils">
<dt>Go to file/line</dt>
<dd>Look around the insert point for a filename and line number, open the file,
and show the line.  Useful to view the source lines referenced in an
exception traceback.</dd>
<dt>Debugger</dt>
<dd>Run commands in the shell under the debugger.</dd>
<dt>Stack viewer</dt>
<dd>Show the stack traceback of the last exception.</dd>
<dt>Auto-open Stack Viewer</dt>
<dd>Open stack viewer on traceback.</dd>
</dl>
</div>
<div class="section" id="edit-context-menu">
<span id="index-3"></span><h3>24.6.1.5. Edit context menu<a class="headerlink" href="#edit-context-menu" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Right-click in Edit window (Control-click on OS X)</li>
</ul>
<dl class="docutils">
<dt>Cut</dt>
<dd>Copy selection into system-wide clipboard; then delete selection</dd>
<dt>Copy</dt>
<dd>Copy selection into system-wide clipboard</dd>
<dt>Paste</dt>
<dd>Insert system-wide clipboard into window</dd>
<dt>Set Breakpoint</dt>
<dd>Sets a breakpoint.  Breakpoints are only enabled when the debugger is open.</dd>
<dt>Clear Breakpoint</dt>
<dd>Clears the breakpoint on that line.</dd>
</dl>
</div>
<div class="section" id="shell-context-menu">
<span id="index-4"></span><h3>24.6.1.6. Shell context menu<a class="headerlink" href="#shell-context-menu" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Right-click in Python Shell window (Control-click on OS X)</li>
</ul>
<dl class="docutils">
<dt>Cut</dt>
<dd>Copy selection into system-wide clipboard; then delete selection</dd>
<dt>Copy</dt>
<dd>Copy selection into system-wide clipboard</dd>
<dt>Paste</dt>
<dd>Insert system-wide clipboard into window</dd>
<dt>Go to file/line</dt>
<dd>Same as in Debug menu.</dd>
</dl>
</div>
</div>
<div class="section" id="basic-editing-and-navigation">
<h2>24.6.2. Basic editing and navigation<a class="headerlink" href="#basic-editing-and-navigation" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li><tt class="kbd docutils literal"><span class="pre">Backspace</span></tt> deletes to the left; <tt class="kbd docutils literal"><span class="pre">Del</span></tt> deletes to the right</li>
<li>Arrow keys and <tt class="kbd docutils literal"><span class="pre">Page</span> <span class="pre">Up</span></tt>/<tt class="kbd docutils literal"><span class="pre">Page</span> <span class="pre">Down</span></tt> to move around</li>
<li><tt class="kbd docutils literal"><span class="pre">Home</span></tt>/<tt class="kbd docutils literal"><span class="pre">End</span></tt> go to begin/end of line</li>
<li><tt class="kbd docutils literal"><span class="pre">C-Home</span></tt>/<tt class="kbd docutils literal"><span class="pre">C-End</span></tt> go to begin/end of file</li>
<li>Some <strong class="program">Emacs</strong> bindings may also work, including <tt class="kbd docutils literal"><span class="pre">C-B</span></tt>,
<tt class="kbd docutils literal"><span class="pre">C-P</span></tt>, <tt class="kbd docutils literal"><span class="pre">C-A</span></tt>, <tt class="kbd docutils literal"><span class="pre">C-E</span></tt>, <tt class="kbd docutils literal"><span class="pre">C-D</span></tt>, <tt class="kbd docutils literal"><span class="pre">C-L</span></tt></li>
</ul>
<div class="section" id="automatic-indentation">
<h3>24.6.2.1. Automatic indentation<a class="headerlink" href="#automatic-indentation" title="Permalink to this headline">¶</a></h3>
<p>After a block-opening statement, the next line is indented by 4 spaces (in the
Python Shell window by one tab).  After certain keywords (break, return etc.)
the next line is dedented.  In leading indentation, <tt class="kbd docutils literal"><span class="pre">Backspace</span></tt> deletes up
to 4 spaces if they are there. <tt class="kbd docutils literal"><span class="pre">Tab</span></tt> inserts 1-4 spaces (in the Python
Shell window one tab). See also the indent/dedent region commands in the edit
menu.</p>
</div>
<div class="section" id="python-shell-window">
<h3>24.6.2.2. Python Shell window<a class="headerlink" href="#python-shell-window" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li><tt class="kbd docutils literal"><span class="pre">C-C</span></tt> interrupts executing command</li>
<li><tt class="kbd docutils literal"><span class="pre">C-D</span></tt> sends end-of-file; closes window if typed at a <tt class="docutils literal"><span class="pre">&gt;&gt;&gt;</span></tt> prompt</li>
<li><tt class="kbd docutils literal"><span class="pre">Alt-p</span></tt> retrieves previous command matching what you have typed</li>
<li><tt class="kbd docutils literal"><span class="pre">Alt-n</span></tt> retrieves next</li>
<li><tt class="kbd docutils literal"><span class="pre">Return</span></tt> while on any previous command retrieves that command</li>
<li><tt class="kbd docutils literal"><span class="pre">Alt-/</span></tt> (Expand word) is also useful here</li>
</ul>
</div>
</div>
<div class="section" id="syntax-colors">
<span id="index-5"></span><h2>24.6.3. Syntax colors<a class="headerlink" href="#syntax-colors" title="Permalink to this headline">¶</a></h2>
<p>The coloring is applied in a background &#8220;thread,&#8221; so you may occasionally see
uncolorized text.  To change the color scheme, edit the <tt class="docutils literal"><span class="pre">[Colors]</span></tt> section in
<tt class="file docutils literal"><span class="pre">config.txt</span></tt>.</p>
<dl class="docutils">
<dt>Python syntax colors:</dt>
<dd><dl class="first last docutils">
<dt>Keywords</dt>
<dd>orange</dd>
<dt>Strings</dt>
<dd>green</dd>
<dt>Comments</dt>
<dd>red</dd>
<dt>Definitions</dt>
<dd>blue</dd>
</dl>
</dd>
<dt>Shell colors:</dt>
<dd><dl class="first last docutils">
<dt>Console output</dt>
<dd>brown</dd>
<dt>stdout</dt>
<dd>blue</dd>
<dt>stderr</dt>
<dd>dark green</dd>
<dt>stdin</dt>
<dd>black</dd>
</dl>
</dd>
</dl>
</div>
<div class="section" id="startup">
<h2>24.6.4. Startup<a class="headerlink" href="#startup" title="Permalink to this headline">¶</a></h2>
<p>Upon startup with the <tt class="docutils literal"><span class="pre">-s</span></tt> option, IDLE will execute the file referenced by
the environment variables <span class="target" id="index-6"></span><tt class="xref std std-envvar docutils literal"><span class="pre">IDLESTARTUP</span></tt> or <span class="target" id="index-7"></span><a class="reference internal" href="../using/cmdline.html#envvar-PYTHONSTARTUP"><tt class="xref std std-envvar docutils literal"><span class="pre">PYTHONSTARTUP</span></tt></a>.
Idle first checks for <tt class="docutils literal"><span class="pre">IDLESTARTUP</span></tt>; if <tt class="docutils literal"><span class="pre">IDLESTARTUP</span></tt> is present the file
referenced is run.  If <tt class="docutils literal"><span class="pre">IDLESTARTUP</span></tt> is not present, Idle checks for
<tt class="docutils literal"><span class="pre">PYTHONSTARTUP</span></tt>.  Files referenced by these environment variables are
convenient places to store functions that are used frequently from the Idle
shell, or for executing import statements to import common modules.</p>
<p>In addition, <tt class="docutils literal"><span class="pre">Tk</span></tt> also loads a startup file if it is present.  Note that the
Tk file is loaded unconditionally.  This additional file is <tt class="docutils literal"><span class="pre">.Idle.py</span></tt> and is
looked for in the user&#8217;s home directory.  Statements in this file will be
executed in the Tk namespace, so this file is not useful for importing functions
to be used from Idle&#8217;s Python shell.</p>
<div class="section" id="command-line-usage">
<h3>24.6.4.1. Command line usage<a class="headerlink" href="#command-line-usage" title="Permalink to this headline">¶</a></h3>
<div class="highlight-python"><pre>idle.py [-c command] [-d] [-e] [-s] [-t title] [arg] ...

-c command  run this command
-d          enable debugger
-e          edit mode; arguments are files to be edited
-s          run $IDLESTARTUP or $PYTHONSTARTUP first
-t title    set title of shell window</pre>
</div>
<p>If there are arguments:</p>
<ol class="arabic simple">
<li>If <tt class="docutils literal"><span class="pre">-e</span></tt> is used, arguments are files opened for editing and
<tt class="docutils literal"><span class="pre">sys.argv</span></tt> reflects the arguments passed to IDLE itself.</li>
<li>Otherwise, if <tt class="docutils literal"><span class="pre">-c</span></tt> is used, all arguments are placed in
<tt class="docutils literal"><span class="pre">sys.argv[1:...]</span></tt>, with <tt class="docutils literal"><span class="pre">sys.argv[0]</span></tt> set to <tt class="docutils literal"><span class="pre">'-c'</span></tt>.</li>
<li>Otherwise, if neither <tt class="docutils literal"><span class="pre">-e</span></tt> nor <tt class="docutils literal"><span class="pre">-c</span></tt> is used, the first
argument is a script which is executed with the remaining arguments in
<tt class="docutils literal"><span class="pre">sys.argv[1:...]</span></tt>  and <tt class="docutils literal"><span class="pre">sys.argv[0]</span></tt> set to the script name.  If the script
name is &#8216;-&#8216;, no script is executed but an interactive Python session is started;
the arguments are still available in <tt class="docutils literal"><span class="pre">sys.argv</span></tt>.</li>
</ol>
</div>
</div>
</div>


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  <h3><a href="../contents.html">Table Of Contents</a></h3>
  <ul>
<li><a class="reference internal" href="#">24.6. IDLE</a><ul>
<li><a class="reference internal" href="#menus">24.6.1. Menus</a><ul>
<li><a class="reference internal" href="#file-menu">24.6.1.1. File menu</a></li>
<li><a class="reference internal" href="#edit-menu">24.6.1.2. Edit menu</a></li>
<li><a class="reference internal" href="#windows-menu">24.6.1.3. Windows menu</a></li>
<li><a class="reference internal" href="#debug-menu">24.6.1.4. Debug menu</a></li>
<li><a class="reference internal" href="#edit-context-menu">24.6.1.5. Edit context menu</a></li>
<li><a class="reference internal" href="#shell-context-menu">24.6.1.6. Shell context menu</a></li>
</ul>
</li>
<li><a class="reference internal" href="#basic-editing-and-navigation">24.6.2. Basic editing and navigation</a><ul>
<li><a class="reference internal" href="#automatic-indentation">24.6.2.1. Automatic indentation</a></li>
<li><a class="reference internal" href="#python-shell-window">24.6.2.2. Python Shell window</a></li>
</ul>
</li>
<li><a class="reference internal" href="#syntax-colors">24.6.3. Syntax colors</a></li>
<li><a class="reference internal" href="#startup">24.6.4. Startup</a><ul>
<li><a class="reference internal" href="#command-line-usage">24.6.4.1. Command line usage</a></li>
</ul>
</li>
</ul>
</li>
</ul>

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