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<title>The Py Manual</title>
<meta name="author" content="Patrick K. O'Brien" />
<meta name="organization" content="Orbtech" />
<meta name="date" content="2004-02-04" />
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<div class="document" id="the-py-manual">
<h1 class="title">The Py Manual</h1>
<h2 class="subtitle" id="py-served-fresh-daily">Py - Served Fresh Daily</h2>
<table class="docinfo" frame="void" rules="none">
<col class="docinfo-name" />
<col class="docinfo-content" />
<tbody valign="top">
<tr><th class="docinfo-name">Author:</th>
<td>Patrick K. O'Brien</td></tr>
<tr><th class="docinfo-name">Contact:</th>
<td><a class="first last reference" href="mailto:pobrien&#64;orbtech.com">pobrien&#64;orbtech.com</a></td></tr>
<tr><th class="docinfo-name">Organization:</th>
<td><a class="first last reference" href="http://www.orbtech.com/">Orbtech</a></td></tr>
<tr><th class="docinfo-name">Date:</th>
<td>2004-02-04</td></tr>
<tr><th class="docinfo-name">Revision:</th>
<td>1.3</td></tr>
</tbody>
</table>
<div class="contents topic" id="contents">
<p class="topic-title"><a name="contents">Contents</a></p>
<ul class="simple">
<li><a class="reference" href="#introduction" id="id3" name="id3">Introduction</a></li>
<li><a class="reference" href="#developer-reference" id="id4" name="id4">Developer Reference</a></li>
<li><a class="reference" href="#what-is-py" id="id5" name="id5">What is Py?</a></li>
<li><a class="reference" href="#pycrust-is-dead-long-live-py" id="id6" name="id6">PyCrust is dead! Long live Py!</a></li>
<li><a class="reference" href="#py-standalone-programs" id="id7" name="id7">Py standalone programs</a></li>
<li><a class="reference" href="#pyalacarte" id="id8" name="id8">PyAlaCarte</a></li>
<li><a class="reference" href="#pyalamode" id="id9" name="id9">PyAlaMode</a></li>
<li><a class="reference" href="#pycrust" id="id10" name="id10">PyCrust</a></li>
<li><a class="reference" href="#pyfilling" id="id11" name="id11">PyFilling</a></li>
<li><a class="reference" href="#pyshell" id="id12" name="id12">PyShell</a></li>
<li><a class="reference" href="#pywrap" id="id13" name="id13">PyWrap</a></li>
<li><a class="reference" href="#py-modules" id="id14" name="id14">Py modules</a></li>
<li><a class="reference" href="#decorator-classes" id="id15" name="id15">Decorator classes</a></li>
<li><a class="reference" href="#projects-using-py" id="id16" name="id16">Projects using Py</a></li>
<li><a class="reference" href="#history-of-changes" id="id17" name="id17">History of changes</a><ul>
<li><a class="reference" href="#to-2004" id="id18" name="id18">0.9.4 (1/25/2004 to //2004)</a></li>
<li><a class="reference" href="#to-1-24-2004" id="id19" name="id19">0.9.3 (9/25/2003 to 1/24/2004)</a></li>
<li><a class="reference" href="#to-9-25-2003" id="id20" name="id20">0.9.2 (5/3/2003 to 9/25/2003)</a></li>
<li><a class="reference" href="#to-5-2-2003" id="id21" name="id21">0.9.1 (3/21/2003 to 5/2/2003)</a></li>
<li><a class="reference" href="#to-3-20-2003" id="id22" name="id22">0.9 (2/27/2003 to 3/20/2003)</a></li>
<li><a class="reference" href="#to-2-26-2003" id="id23" name="id23">0.8.2 (1/5/2003 to 2/26/2003)</a></li>
<li><a class="reference" href="#to-12-25-2002" id="id24" name="id24">0.8.1 (12/20/2002 to 12/25/2002)</a></li>
<li><a class="reference" href="#to-12-16-2002" id="id25" name="id25">0.8 (10/29/2002 to 12/16/2002)</a></li>
<li><a class="reference" href="#to-8-27-2002" id="id26" name="id26">0.7.2 (2/22/2002 to 8/27/2002)</a></li>
<li><a class="reference" href="#to-2-21-2002" id="id27" name="id27">0.7.1 (12/12/2001 to 2/21/2002)</a></li>
<li><a class="reference" href="#to-12-11-2001" id="id28" name="id28">0.7 (10/15/2001 to 12/11/2001)</a></li>
<li><a class="reference" href="#to-10-12-2001" id="id29" name="id29">0.6.1 (9/19/2001 to 10/12/2001)</a></li>
<li><a class="reference" href="#to-9-12-2001" id="id30" name="id30">0.6 (8/21/2001 to 9/12/2001)</a></li>
<li><a class="reference" href="#to-8-20-2001" id="id31" name="id31">0.5.4 (8/17/2001 to 8/20/2001)</a></li>
<li><a class="reference" href="#id1" id="id32" name="id32">0.5.3 (8/16/2001)</a></li>
<li><a class="reference" href="#to-8-15-2001" id="id33" name="id33">0.5.2 (8/14/2001 to 8/15/2001)</a></li>
<li><a class="reference" href="#to-8-14-2001" id="id34" name="id34">0.5.1 (8/10/2001 to 8/14/2001)</a></li>
<li><a class="reference" href="#id2" id="id35" name="id35">0.5 (8/8/2001)</a></li>
<li><a class="reference" href="#to-8-7-2001" id="id36" name="id36">0.4 (8/4/2001 to 8/7/2001)</a></li>
<li><a class="reference" href="#to-8-3-2001" id="id37" name="id37">0.3 (8/2/2001 to 8/3/2001)</a></li>
<li><a class="reference" href="#to-8-2-2001" id="id38" name="id38">0.2 (7/30/2001 to 8/2/2001)</a></li>
<li><a class="reference" href="#to-7-19-2001" id="id39" name="id39">0.1 (7/1/2001 to 7/19/2001)</a></li>
<li><a class="reference" href="#in-the-beginning-there-was-pie-7-1-2001" id="id40" name="id40">In the beginning, there was pie... (7/1/2001)</a></li>
</ul>
</li>
</ul>
</div>
<div class="section" id="introduction">
<h1><a class="toc-backref" href="#id3" name="introduction">Introduction</a></h1>
<p>This document will show you how to use the Py programs and the Py
library of Python source code modules.  Py is the new name for the
project that began as PyCrust.  Py is officially part of <a class="reference" href="http://www.wxpython.org/">wxPython</a>,
and includes PyCrust, so PyCrust is no longer distributed separately.</p>
</div>
<div class="section" id="developer-reference">
<h1><a class="toc-backref" href="#id4" name="developer-reference">Developer Reference</a></h1>
<p>Source code documentation for developers is available at:</p>
<p><a class="reference" href="http://www.orbtech.com/www/wx/epydoc/public/wx.py-module.html">http://www.orbtech.com/www/wx/epydoc/public/wx.py-module.html</a></p>
</div>
<div class="section" id="what-is-py">
<h1><a class="toc-backref" href="#id5" name="what-is-py">What is Py?</a></h1>
<p>Besides being <a class="reference" href="http://www.wikipedia.org/wiki/Pie">a delicious dessert</a>, Py is the name for a collection
of whimsically-named Python programs and modules that began as the
PyCrust project.  So Py is really several things: a set of standalone
programs, including the original PyCrust program, a library of Python
source code modules that can be used in your own programs, a set of
decorator classes that enhance the wxPython class library, and as many
examples of bad &quot;pie&quot; puns as I can come up with.  (If you're going to
do something, you might as well do it all the way, right?)  Py uses
Python and wxPython, so it works equally well on Windows, Linux and
Mac OS X.</p>
</div>
<div class="section" id="pycrust-is-dead-long-live-py">
<h1><a class="toc-backref" href="#id6" name="pycrust-is-dead-long-live-py">PyCrust is dead! Long live Py!</a></h1>
<p>This project began with a program I created called PyCrust - an
interactive, graphical Python shell, developed using the wxPython GUI
toolkit.  For about two years, PyCrust was hosted on <a class="reference" href="http://www.sf.net/projects/pycrust/">SourceForge</a>.
Shortly after I created PyCrust, the wxPython folks started including
it in their distribution.  As the PyCrust project grew, it reached a
point where I thought the original PyCrust name was too confining.  I
was using the PyCrust code base to develop programs that weren't just
Python shells any more.</p>
<p>Around that same time, the wxPython folks asked me if I'd be willing
to move all my wxPython-related projects into the <a class="reference" href="http://cvs.wxwindows.org">wxPython CVS
repository</a>, and become part of the <a class="reference" href="http://www.wxpython.org/">wxPython</a>/<a class="reference" href="http://www.wxwindows.org/">wxWindows</a> developer team.
I decided the time was right to restructure the PyCrust project.
During the move, the PyCrust package was renamed to &quot;py&quot; (lowercase
&quot;p&quot;) and the collection of programs and modules as a whole became
known as &quot;Py&quot; (with a capital &quot;P&quot;).</p>
<p>The original goal of PyCrust was to be the best interactive, graphical
Python shell (of course, I claimed it was the &quot;flakiest&quot; Python
shell).  And that was all I wanted it to be.  But little by little I
found myself developing a wider variety of tools for wxPython
applications.  Eventually I'll create a debugger (PySlice, perhaps)
and whatever else is needed to one day become a complete wxPython
application development environment (PyFactory?).  In the mean time,
PyCrust is still the flakiest Python shell, and the other Py programs
are equally tasty.</p>
<p>At this point, Py has standalone programs that include Python code
editors (PyAlaCarte and PyAlaMode), interactive Python shells (PyCrust
and PyShell), and a runtime wrapper (PyWrap).  The runtime wrapper
utility provides you with runtime introspection capabilities for your
wxPython programs without having to include PyCrust or PyShell in your
program, and without having to alter one line of your source code.</p>
<p>Py also contains a collection of modules that you can use in your own
wxPython applications to provide similar services, either for your own
use during development, or as an interface for users of your programs.
These modules are the same ones used by all the Py programs.  In
addition, Py contains a set of decorator classes that enhance the
wxPython class library, by dynamically attaching docstrings and call
signatures at runtime.</p>
</div>
<div class="section" id="py-standalone-programs">
<h1><a class="toc-backref" href="#id7" name="py-standalone-programs">Py standalone programs</a></h1>
<p>These are the standalone applications in the Py collection:</p>
<ul class="simple">
<li>PyAlaCarte</li>
<li>PyAlaMode</li>
<li>PyCrust</li>
<li>PyFilling</li>
<li>PyShell</li>
<li>PyWrap</li>
</ul>
</div>
<div class="section" id="pyalacarte">
<h1><a class="toc-backref" href="#id8" name="pyalacarte">PyAlaCarte</a></h1>
<p>PyAlaCarte is a Python source code editor.  It is designed to have a
simple, single-file interface.  As a standalone application, it is
good for simple, short editing tasks.  But it is really meant to be
more of an example of how to embed the Py editor into a wxPython
application.</p>
</div>
<div class="section" id="pyalamode">
<h1><a class="toc-backref" href="#id9" name="pyalamode">PyAlaMode</a></h1>
<p>PyAlaMode is a Python source code editor.</p>
</div>
<div class="section" id="pycrust">
<h1><a class="toc-backref" href="#id10" name="pycrust">PyCrust</a></h1>
<p>PyCrust is an interactive, Python shell.  But it's more than just a
shell.  It includes a tabbed notebook containing a namespace tree
(PyFilling), and several other things.</p>
</div>
<div class="section" id="pyfilling">
<h1><a class="toc-backref" href="#id11" name="pyfilling">PyFilling</a></h1>
<p>PyFilling is a namespace viewer.  It isn't really useful as a
standalone program, but it does illustrate how to make use of the
underlying <tt class="literal"><span class="pre">filling</span></tt> module.</p>
</div>
<div class="section" id="pyshell">
<h1><a class="toc-backref" href="#id12" name="pyshell">PyShell</a></h1>
<p>PyShell is an interactive, Python shell.  It shares the same base code
as PyCrust, but doesn't have any of the extra features that appear in
the PyCrust notebook interface.</p>
<div class="figure">
<p><img alt="/screenshots/PyShell.png" src="/screenshots/PyShell.png" /></p>
<p class="caption">PyShell running on Mandrake Linux 9.1.</p>
</div>
</div>
<div class="section" id="pywrap">
<h1><a class="toc-backref" href="#id13" name="pywrap">PyWrap</a></h1>
<p>PyWrap is a runtime utility that lets you run an existing wxPython
program with a PyCrust frame at the same time.  Inside the PyCrust
shell namespace, the local variable <tt class="literal"><span class="pre">app</span></tt> is assigned to your
application instance.  In this way you can introspect your entire
application within the PyCrust shell, as well as the PyFilling
namespace viewer.  And through the use of the Py decorator classes,
PyCrust can display wxPython function and method signatures as well as
docstrings for the entire wxPython library.</p>
</div>
<div class="section" id="py-modules">
<h1><a class="toc-backref" href="#id14" name="py-modules">Py modules</a></h1>
<p>Py was designed to be modular.  That means graphical code is kept
separate from non-graphical code, and many of the Py modules can be
used by other programs.  Likewise, other programs can supply some of
the modules needed by Py.  For example, you could supply a customized
interpreter module and plug it in to the PyCrust standalone
application.  As long as it supports the minimum functionality
required, PyCrust will work just as well with your interpreter as with
its default interpreter.</p>
</div>
<div class="section" id="decorator-classes">
<h1><a class="toc-backref" href="#id15" name="decorator-classes">Decorator classes</a></h1>
<p>Py contains a set of decorator classes that enhance the wxPython class
library, by dynamically attaching docstrings and call signatures at
runtime.</p>
</div>
<div class="section" id="projects-using-py">
<h1><a class="toc-backref" href="#id16" name="projects-using-py">Projects using Py</a></h1>
<ul class="simple">
<li><a class="reference" href="http://conflictsolver.sourceforge.net/">Conflict Solver</a></li>
<li><a class="reference" href="http://www.gnumed.org/">Gnumed</a></li>
<li>PyGist</li>
<li><a class="reference" href="http://www.pythoncard.org/">PythonCard</a></li>
<li><a class="reference" href="http://rpy.sourceforge.net/">RPy</a></li>
<li><a class="reference" href="http://www.scipy.org/">SciPy</a></li>
<li><a class="reference" href="http://www.sim42.org/">Sim42</a></li>
<li><a class="reference" href="http://linus.yorktown.arlington.k12.va.us/CS/APCSC/student_sites/David_Mayo/wxGasp">wxGasp</a></li>
</ul>
</div>
<div class="section" id="history-of-changes">
<h1><a class="toc-backref" href="#id17" name="history-of-changes">History of changes</a></h1>
<p>This section lists all the changes that have been made to the Py
programs and modules, since the beginning.</p>
<div class="section" id="to-2004">
<h2><a class="toc-backref" href="#id18" name="to-2004">0.9.4 (1/25/2004 to //2004)</a></h2>
<p>Removed wxd decorators in favor of new SWIG-generated docstrings.</p>
<p>Removed docs tabs from crust interface:
* wxPython Docs
* wxSTC Docs</p>
<p>Fixed Calltip tab refresh problem on Windows.</p>
<p>shell.autoCompleteAutoHide added with default of True.</p>
<p>Changed default namespace of Shell to __main__.__dict__, instead of an
empty dictionary.</p>
</div>
<div class="section" id="to-1-24-2004">
<h2><a class="toc-backref" href="#id19" name="to-1-24-2004">0.9.3 (9/25/2003 to 1/24/2004)</a></h2>
<p>Fun and games with dynamic renaming.  Details of any other changes
were lost in the confusion.  I'll try to do better in the future.</p>
</div>
<div class="section" id="to-9-25-2003">
<h2><a class="toc-backref" href="#id20" name="to-9-25-2003">0.9.2 (5/3/2003 to 9/25/2003)</a></h2>
<p>Changed to the new prefix-less &quot;wx&quot; package:</p>
<pre class="literal-block">
import wx
</pre>
<p>instead of:</p>
<pre class="literal-block">
from wxPython import wx
</pre>
<p>Fixed typo in <tt class="literal"><span class="pre">PyWrap.py</span></tt>:</p>
<pre class="literal-block">
if __name__ == '__main__':
    main(sys.argv)
</pre>
<p>should have been:</p>
<pre class="literal-block">
if __name__ == '__main__':
    main()
</pre>
<p>Added pretty-print Display tab to Crust, based on suggestion from
Jason Whitlark.</p>
<p>Improved <tt class="literal"><span class="pre">Can*</span></tt> checks in <tt class="literal"><span class="pre">EditWindow</span></tt>, since STC is too lenient,
particularly when it is set to read-only but returns True for
CanPaste() (seems like an STC bug to me):</p>
<pre class="literal-block">
def CanCopy(self):
    &quot;&quot;&quot;Return True if text is selected and can be copied.&quot;&quot;&quot;
    return self.GetSelectionStart() != self.GetSelectionEnd()

def CanCut(self):
    &quot;&quot;&quot;Return True if text is selected and can be cut.&quot;&quot;&quot;
    return self.CanCopy() and self.CanEdit()

def CanEdit(self):
    &quot;&quot;&quot;Return True if editing should succeed.&quot;&quot;&quot;
    return not self.GetReadOnly()

def CanPaste(self):
    &quot;&quot;&quot;Return True if pasting should succeed.&quot;&quot;&quot;
    return stc.StyledTextCtrl.CanPaste(self) and self.CanEdit()
</pre>
</div>
<div class="section" id="to-5-2-2003">
<h2><a class="toc-backref" href="#id21" name="to-5-2-2003">0.9.1 (3/21/2003 to 5/2/2003)</a></h2>
<p>PyCrust is dead!  Long live Py!</p>
<ul class="simple">
<li>Renamed <tt class="literal"><span class="pre">PyCrust</span></tt> package to <tt class="literal"><span class="pre">py</span></tt>.</li>
<li>Moved code to wxPython's CVS repository.</li>
</ul>
<p>Fixed bug in <tt class="literal"><span class="pre">introspect.py</span></tt> on introspecting objects occurring
immediately after a secondary prompt, like this:</p>
<pre class="literal-block">
&gt;&gt;&gt; l = [1, 2, 3]
&gt;&gt;&gt; for n in range(3):
...     l.  &lt;-- failed to popup autocomplete list
</pre>
<p>Added documentation files:</p>
<ul class="simple">
<li>PyManual.txt</li>
<li>wxPythonManual.txt</li>
<li>wxPythonPackage.txt</li>
<li>wxPythonExamples.txt</li>
</ul>
<p>Added PyAlaMode and PyAlaCarte code editors.</p>
<p>Major refactoring to support <tt class="literal"><span class="pre">editor</span></tt> and <tt class="literal"><span class="pre">shell</span></tt> from the same
base.</p>
<p>Renamed program files:</p>
<ul class="simple">
<li><tt class="literal"><span class="pre">PyCrustApp.py</span></tt> to <tt class="literal"><span class="pre">PyCrust.py</span></tt></li>
<li><tt class="literal"><span class="pre">PyFillingApp.py</span></tt> to <tt class="literal"><span class="pre">PyFilling.py</span></tt></li>
<li><tt class="literal"><span class="pre">PyShellApp.py</span></tt> to <tt class="literal"><span class="pre">PyShell.py</span></tt></li>
<li><tt class="literal"><span class="pre">wrap.py</span></tt> to <tt class="literal"><span class="pre">PyWrap.py</span></tt></li>
</ul>
<p>Removed disabling of autocomplete for lists of 2000 items or more.
The current implementation of wxSTC can now handle lists this big.</p>
<p>Improved handling of <tt class="literal"><span class="pre">sys.path</span></tt> to mimic the standard Python shell.</p>
</div>
<div class="section" id="to-3-20-2003">
<h2><a class="toc-backref" href="#id22" name="to-3-20-2003">0.9 (2/27/2003 to 3/20/2003)</a></h2>
<p>Added fontIncrease, fontDecrease, fontDefault signals, receivers and
keybindings:</p>
<pre class="literal-block">
Ctrl+]            Increase font size.
Ctrl+[            Decrease font size.
Ctrl+=            Default font size.
</pre>
<p>Continued enhancement of the decorator capability to provide better
documentation and docstrings for wxPython classes and functions.</p>
<p>Introduced new tabbed interface:</p>
<ul class="simple">
<li>Namespace</li>
<li>Calltip</li>
<li>Session</li>
<li>Dispatcher</li>
<li>wxPython Docs</li>
<li>wxSTC Docs</li>
</ul>
<p><tt class="literal"><span class="pre">Filling.tree</span></tt> now expands tuples as well as lists.  (It should have
done this all along, I just never noticed this omission before.)</p>
<p>Added this True/False test to all modules:</p>
<pre class="literal-block">
try:
    True
except NameError:
    True = 1==1
    False = 1==0
</pre>
<p>Added <tt class="literal"><span class="pre">wxd</span></tt> directory with decoration classes.</p>
</div>
<div class="section" id="to-2-26-2003">
<h2><a class="toc-backref" href="#id23" name="to-2-26-2003">0.8.2 (1/5/2003 to 2/26/2003)</a></h2>
<p>Wrapped <tt class="literal"><span class="pre">sys.ps1</span></tt>, <tt class="literal"><span class="pre">sys.ps2</span></tt>, and <tt class="literal"><span class="pre">sys.ps3</span></tt> in <tt class="literal"><span class="pre">str()</span></tt>.
(Thanks, Kieran Holland.)</p>
<p>Fixed minor things found by PyChecker.</p>
<p>Changed locals to use <tt class="literal"><span class="pre">__main__.__dict__</span></tt> and added code to clean up
the namespace, making it as close to the regular Python environment as
possible.  This solves the problem of pickling and unpickling
instances of classes defined in the shell.</p>
<p>Made <tt class="literal"><span class="pre">shell.PasteAndRun()</span></tt> a little more forgiving when it finds a
ps2 prompt line with no trailing space, such when you copy code from a
web page.</p>
<p>Improved autocomplete behavior by adding these to shell:</p>
<pre class="literal-block">
self.AutoCompSetAutoHide(False)
self.AutoCompStops(' .,;:([)]}\'&quot;\\&lt;&gt;%^&amp;+-=*/|`')
</pre>
<p>Added <tt class="literal"><span class="pre">decor</span></tt> directory, <tt class="literal"><span class="pre">decorator.py</span></tt>, <tt class="literal"><span class="pre">stcDecor.py</span></tt>, and
<tt class="literal"><span class="pre">stcConstants.py</span></tt>.  These all serve the purpose of adding docstrings
to existing wxPython classes, in particular the <tt class="literal"><span class="pre">wxStyledTextCtrl</span></tt>.</p>
<p>Added <tt class="literal"><span class="pre">wrap.py</span></tt>, a command line utility for running a wxPython app
with additional runtime-tools loaded, such as PyCrust (the only tool
at this point).</p>
<p>Flushed the clipboard Cut/Copy operations so that selections will
exist in the clipboard even after PyCrust has been closed.</p>
<p>Improved the suppression of docstrings for simple data types appearing
in the namespace viewer.</p>
<p>Better handling of autocompletion with numeric types; no
autocompletion when typing a dot after an integer.  If the
autocompletion is desired, type a space before the dot:</p>
<pre class="literal-block">
func = 3 .
</pre>
<p>More Filling!!! The namespace tree is now dynamically updated.</p>
</div>
<div class="section" id="to-12-25-2002">
<h2><a class="toc-backref" href="#id24" name="to-12-25-2002">0.8.1 (12/20/2002 to 12/25/2002)</a></h2>
<p>Improved keyboard handling with Autocomplete active.  You can now use
Enter as well as Tab to select an item from the list.</p>
<p>Disabled autocomplete for lists of 2000 items or more.  The current
implementation of wxSTC can't handle lists this big.</p>
<p>Changed <tt class="literal"><span class="pre">filling</span></tt> to always display docstrings for objects.  This is
useful for objects whose docstrings have been decorated, rather than
coming directly from the source code.  (Hmmm.  Sounds like someone is
doing some decorating.  I wonder where that would be helpful? &lt;wink&gt;)</p>
<p>Fixed handling of icon.  Added <tt class="literal"><span class="pre">images.py</span></tt> file.</p>
</div>
<div class="section" id="to-12-16-2002">
<h2><a class="toc-backref" href="#id25" name="to-12-16-2002">0.8 (10/29/2002 to 12/16/2002)</a></h2>
<p>Added &quot;help&quot; to startup banner info.</p>
<p>Made all <tt class="literal"><span class="pre">wx</span></tt> and <tt class="literal"><span class="pre">stc</span></tt> imports explicit.  No more <tt class="literal"><span class="pre">import</span> <span class="pre">*</span></tt>.</p>
<p>Replaced use of the <tt class="literal"><span class="pre">wx</span></tt> module's <tt class="literal"><span class="pre">true</span></tt> and <tt class="literal"><span class="pre">false</span></tt> with
Python's <tt class="literal"><span class="pre">True</span></tt> and <tt class="literal"><span class="pre">False</span></tt>.</p>
<p>Changed <tt class="literal"><span class="pre">introspect.getRoot()</span></tt> to use <tt class="literal"><span class="pre">tokenize</span></tt> module.  This
does a slightly better job than the previous parsing routine and the
code is clearer.</p>
<p>Improved handling of whitespace and empty types during introspection.</p>
<p>Fixed cut/copy clipboard problem under Linux.  (Robin Dunn rocks!!!)</p>
<p>Added shell.about() which works like this:</p>
<pre class="literal-block">
&gt;&gt;&gt; shell.about()
PyCrust Version: 0.8
Shell Revision: 1.80
Interpreter Revision: 1.15
Python Version: 2.2.2
wxPython Version: 2.3.3.1
Platform: linux2
</pre>
<p>Added copy plus and paste plus to shell menu.</p>
<p>Moved shell menu from <tt class="literal"><span class="pre">shell.py</span></tt> to <tt class="literal"><span class="pre">shellmenu.py</span></tt>.</p>
<p>Added <tt class="literal"><span class="pre">sys.stdin.readlines()</span></tt> support.</p>
<p>Added <tt class="literal"><span class="pre">time.sleep()</span></tt> in <tt class="literal"><span class="pre">readline()</span></tt> and <tt class="literal"><span class="pre">OnIdle()</span></tt> event
handler to free up the CPU.</p>
</div>
<div class="section" id="to-8-27-2002">
<h2><a class="toc-backref" href="#id26" name="to-8-27-2002">0.7.2 (2/22/2002 to 8/27/2002)</a></h2>
<p>Tweaked <tt class="literal"><span class="pre">getAttributeNames()</span></tt> to pick up a few more attributes:</p>
<pre class="literal-block">
'__bases__', '__class__', '__dict__', '__name__', 'func_closure',
'func_code', 'func_defaults', 'func_dict', 'func_doc',
'func_globals', 'func_name'
</pre>
<p>Added a tests directory and unit tests.</p>
<p>Improved support for empty types in the shell: <tt class="literal"><span class="pre">[]</span></tt>, <tt class="literal"><span class="pre">()</span></tt> and
<tt class="literal"><span class="pre">{}</span></tt> as far as when call tips and autocompletion are available.</p>
<p>Added support for the other triple string - <tt class="literal"><span class="pre">''''''</span></tt>.</p>
<p>Refactored <tt class="literal"><span class="pre">introspect.py</span></tt> to improve testability.</p>
<p>Improved call tips for unbound methods by leaving the &quot;self&quot;
parameter, since unbound methods require an instance be passed.</p>
<p>Fixed call tip bug where a tip was displayed when a &quot;(&quot; was typed
after an object that wasn't callable.</p>
<p>Fixed <tt class="literal"><span class="pre">getAllAttributeNames</span></tt> when <tt class="literal"><span class="pre">str(object)</span></tt> fails.</p>
<p>Added brace highlighting.  (Thank you, Kevin Altis.)</p>
<p>Fixed problem displaying unicode objects in <tt class="literal"><span class="pre">PyFilling</span></tt>.</p>
<p>Changed how <tt class="literal"><span class="pre">filling.py</span></tt> checks for expandable objects.  Lists are
now expandable objects.</p>
<p>Made the key handling more robust when there is an active text
selection that includes text prior to the last primary prompt.  Thanks
to Raul Cota for pointing this out.</p>
<p>Fixed wxSTC problem with brace highlighting and non-us keyboards.
(Thank you for the patch, Jean-Michel Fauth.)</p>
<p>Added <tt class="literal"><span class="pre">busy</span> <span class="pre">=</span> <span class="pre">wxBusyCursor()</span></tt> to key points in <tt class="literal"><span class="pre">shell</span></tt> and
<tt class="literal"><span class="pre">filling</span></tt>.</p>
<p>Added <tt class="literal"><span class="pre">OnCloseWindow</span></tt> handler to <tt class="literal"><span class="pre">ShellFrame</span></tt> and <tt class="literal"><span class="pre">CrustFrame</span></tt>.</p>
<p>Default to <tt class="literal"><span class="pre">SetWrapMode(1)</span></tt> for shell and namespace viewer.</p>
<p>Added <tt class="literal"><span class="pre">shell.wrap()</span></tt> and <tt class="literal"><span class="pre">shell.zoom()</span></tt>.</p>
<p>Added autoCompleteKeys hooks for Raul Cota.</p>
<p>Cleaned up various little key handling bugs.</p>
<p>Changed input methods to get values from shell, rather than dialog
boxes.  Renamed <tt class="literal"><span class="pre">readIn</span></tt> to <tt class="literal"><span class="pre">readline</span></tt> and <tt class="literal"><span class="pre">readRaw</span></tt> to
<tt class="literal"><span class="pre">raw_input</span></tt>.</p>
</div>
<div class="section" id="to-2-21-2002">
<h2><a class="toc-backref" href="#id27" name="to-2-21-2002">0.7.1 (12/12/2001 to 2/21/2002)</a></h2>
<p>Fixed <tt class="literal"><span class="pre">OnChar()</span></tt> issues effecting European keyboards, as reported by
Jean-Michel Fauth.</p>
<p>Fixed <tt class="literal"><span class="pre">introspect.py</span></tt> issue with xmlrpc objects reported by Kevin
Altis.</p>
<p>Fixed some introspect/PyFilling issues with regard to Python 2.2.</p>
<p>Fixed font background color as reported by Keith J. Farmer.  (Thanks)</p>
<p>Fixed problem with call tips and autocompletion inside multiline
commands as report by Kevin Altis.</p>
<p>Improved <tt class="literal"><span class="pre">OnKeyDown</span></tt> handling of cut/copy/paste operations based on
feedback from Syver Enstad.  (Thanks)</p>
<p>Added a <tt class="literal"><span class="pre">shell.help()</span></tt> method to display some help info.</p>
<p>Changed sort of items in the namespace viewer to case insensitive.</p>
<p>Changed <tt class="literal"><span class="pre">attributes.sort(lambda</span> <span class="pre">x,</span> <span class="pre">y:</span> <span class="pre">cmp(x.upper(),</span> <span class="pre">y.upper()))</span></tt> in
advance of an upcoming fix to an autocompletion matching bug in wxSTC.</p>
<p>Improved support for ZODB by allowing namespace drilldown into BTrees.</p>
<p>Added <tt class="literal"><span class="pre">shell.PasteAndRun()</span></tt> to support pasting multiple commands into
the shell from the clipboard.  Ctrl+Shift+V or v.</p>
<p>Enter now always processes a command (or copies down a previous one.)
To insert a line break, press Ctrl+Enter.</p>
<p>Escape key clears the current, unexecuted command.</p>
<p>History retrieval changed to replace current command.  Added new keys
to insert from history - Shift+Up and Shift+Down.</p>
<p>Better call tips on objects with <tt class="literal"><span class="pre">__call__</span></tt> methods.</p>
<p>Improved call tip positioning calculation.</p>
</div>
<div class="section" id="to-12-11-2001">
<h2><a class="toc-backref" href="#id28" name="to-12-11-2001">0.7 (10/15/2001 to 12/11/2001)</a></h2>
<p>Changed how command history retrieval functions work.  Added Alt-P,
Alt-N as keybindings for Retrieve-Previous, Retrieve-Next.</p>
<p>Added full support for multi-line commands, similar to IDLE.</p>
<p>Changed <tt class="literal"><span class="pre">introspect.getAttributeNames()</span></tt> to do a case insensitive
sort.</p>
<p>Changed Cut/Copy/Paste to deal with prompts intelligently.  Cut and
Copy remove all prompts.  Paste can handle prompted or not-prompted
text.</p>
<p>Added <tt class="literal"><span class="pre">CopyWithPrompts()</span></tt> method attached to Ctrl-Shift-C for those
times when you really do want all the prompts left intact.</p>
<p>Improved handling of the shell's read-only zone.</p>
<p>Changed <tt class="literal"><span class="pre">CrustFrame.__init__</span></tt> parameter spec to include all
parameters allowed by a <tt class="literal"><span class="pre">wxFrame</span></tt>.</p>
<p>Changed <tt class="literal"><span class="pre">FillingText</span></tt> to be read-only.</p>
<p>Renamed <tt class="literal"><span class="pre">PyCrust.py</span></tt> to <tt class="literal"><span class="pre">PyCrustApp.py</span></tt> to eliminate
package/module name conflicts that kept you from doing <tt class="literal"><span class="pre">from</span> <span class="pre">PyCrust</span>
<span class="pre">import</span> <span class="pre">shell</span></tt> inside files located in the <tt class="literal"><span class="pre">PyCrust</span></tt> directory.</p>
<p>Renamed <tt class="literal"><span class="pre">PyFilling.py</span></tt> to <tt class="literal"><span class="pre">PyFillingApp.py</span></tt> and <tt class="literal"><span class="pre">PyShell.py</span></tt> to
<tt class="literal"><span class="pre">PyShellApp.py</span></tt> to maintain consistency.</p>
<p>Removed the <tt class="literal"><span class="pre">__date__</span></tt> property from all modules.</p>
<p>Fixed bug in <tt class="literal"><span class="pre">introspect.getCallTip()</span></tt>, reported by Kevin Altis.</p>
</div>
<div class="section" id="to-10-12-2001">
<h2><a class="toc-backref" href="#id29" name="to-10-12-2001">0.6.1 (9/19/2001 to 10/12/2001)</a></h2>
<p>Changed <tt class="literal"><span class="pre">Shell.run()</span></tt> to always position to the end of existing
text, as suggested by Raul Cota.</p>
<p>Changed <tt class="literal"><span class="pre">introspect.getAllAttributeNames()</span></tt> to break circular
references in <tt class="literal"><span class="pre">object.__class__</span></tt>, which occurs in Zope/ZODB
extension classes.</p>
<p>Changed <tt class="literal"><span class="pre">filling.FillingTree.getChildren()</span></tt> to introspect extension
classes.</p>
<p>Fixed minor bugs in <tt class="literal"><span class="pre">introspect.getCallTip()</span></tt> that were interfering
with call tips for Zope/ZODB extension class methods.</p>
<p>In preparation for wxPython 2.3.2, added code to fix a font sizing
problem.  Versions of wxPython prior to 2.3.2 had a sizing bug on Win
platform where the font was 2 points larger than what was specified.</p>
<p>Added a hack to <tt class="literal"><span class="pre">introspect.getAllAttributeNames()</span></tt> to &quot;wake up&quot;
ZODB objects that are asleep - in a &quot;ghost&quot; state.  Otherwise it
returns incomplete info.</p>
</div>
<div class="section" id="to-9-12-2001">
<h2><a class="toc-backref" href="#id30" name="to-9-12-2001">0.6 (8/21/2001 to 9/12/2001)</a></h2>
<p>Added <tt class="literal"><span class="pre">PyFilling.py</span></tt> and <tt class="literal"><span class="pre">filling.py</span></tt>.</p>
<p><tt class="literal"><span class="pre">PyShell.py</span></tt> and <tt class="literal"><span class="pre">PyFilling.py</span></tt> can now be run standalone, as well
as <tt class="literal"><span class="pre">PyCrust.py</span></tt>.</p>
<p>Added <tt class="literal"><span class="pre">crust.py</span></tt> and moved some code from <tt class="literal"><span class="pre">PyCrust.py</span></tt> to it.</p>
<p>Added command history retrieval features submitted by Richie Hindle.</p>
<p>Changed <tt class="literal"><span class="pre">shell.write()</span></tt> to replace line endings with OS-specific
endings.  Changed <tt class="literal"><span class="pre">shell.py</span></tt> and <tt class="literal"><span class="pre">interpreter.py</span></tt> to use
<tt class="literal"><span class="pre">os.linesep</span></tt> in strings having hardcoded line endings.</p>
<p>Added <tt class="literal"><span class="pre">shell.redirectStdin()</span></tt>, <tt class="literal"><span class="pre">shell.redirectStdout()</span></tt> and
<tt class="literal"><span class="pre">shell.redirectStderr()</span></tt> to allow the surrounding app to toggle
requests that the specified <tt class="literal"><span class="pre">sys.std*</span></tt> be redirected to the shell.
These can also be run from within the shell itself, of course.</p>
<p>The shell now adds the current working directory &quot;.&quot; to the search
path:</p>
<pre class="literal-block">
sys.path.insert(0, os.curdir)
</pre>
<p>Added support for distutils installations.</p>
</div>
<div class="section" id="to-8-20-2001">
<h2><a class="toc-backref" href="#id31" name="to-8-20-2001">0.5.4 (8/17/2001 to 8/20/2001)</a></h2>
<p>Changed default font size under Linux to:</p>
<pre class="literal-block">
'size'   : 12,
'lnsize' : 10,
</pre>
<p>Changed <tt class="literal"><span class="pre">Shell</span></tt> to expect a parameter referencing an Interpreter
class, rather than an intepreter instance, to facilitate subclassing
of Interpreter, which effectively broke when the Editor class was
eliminated.</p>
<p>Fixed <tt class="literal"><span class="pre">PyCrustAlaCarte.py</span></tt>, which had been broken by previous
changes.</p>
<p>Created <tt class="literal"><span class="pre">InterpreterAlaCarte</span></tt> class as an example for use in the
demo.</p>
<p>Split <tt class="literal"><span class="pre">PyCrust.py</span></tt> into <tt class="literal"><span class="pre">PyCrust.py</span></tt> and <tt class="literal"><span class="pre">PyShell.py</span></tt> in
anticipation of <tt class="literal"><span class="pre">PyFilling.py</span></tt>.</p>
</div>
<div class="section" id="id1">
<h2><a class="toc-backref" href="#id32" name="id1">0.5.3 (8/16/2001)</a></h2>
<p>Added patch to <tt class="literal"><span class="pre">PyCrust.py</span></tt> to fix wxPython bug:</p>
<pre class="literal-block">
wxID_SELECTALL = NewId() # This *should* be defined by wxPython.
</pre>
</div>
<div class="section" id="to-8-15-2001">
<h2><a class="toc-backref" href="#id33" name="to-8-15-2001">0.5.2 (8/14/2001 to 8/15/2001)</a></h2>
<p>Shortened module names by dropping &quot;PyCrust&quot; as a prefix.</p>
<p>Changed <tt class="literal"><span class="pre">version</span></tt> to <tt class="literal"><span class="pre">VERSION</span></tt> in <tt class="literal"><span class="pre">version</span></tt> module.</p>
<p>Added Options menu to PyCrust application.</p>
<p>Eliminated the Editor class (and editor module) by merging with Shell.
This means that Shell &quot;is a&quot; wxStyledTextCtrl rather than &quot;has a&quot;.
There just wasn't enough non-gui code to justify the separation.
Plus, Shell will be much easier for gui toolkits/designers to deal
with now.</p>
</div>
<div class="section" id="to-8-14-2001">
<h2><a class="toc-backref" href="#id34" name="to-8-14-2001">0.5.1 (8/10/2001 to 8/14/2001)</a></h2>
<p>Added <tt class="literal"><span class="pre">introspect</span></tt> module.</p>
<p>Moved some functionality from <tt class="literal"><span class="pre">PyCrustInterp</span></tt> to <tt class="literal"><span class="pre">introspect</span></tt>.</p>
<p>Changed <tt class="literal"><span class="pre">introspect.getRoot()</span></tt> to no longer remove whitespace from
the command.  This was a remnant of a previous approach that, when
left as part of the current approach, turned out to be a really bad
thing.</p>
<p>Changed <tt class="literal"><span class="pre">introspect.getRoot()</span></tt> to allow commands of <tt class="literal"><span class="pre">''</span></tt>, <tt class="literal"><span class="pre">&quot;&quot;</span></tt>,
<tt class="literal"><span class="pre">&quot;&quot;&quot;&quot;&quot;&quot;</span></tt>, <tt class="literal"><span class="pre">[]</span></tt>, <tt class="literal"><span class="pre">()</span></tt>, and <tt class="literal"><span class="pre">{}</span></tt> to pass through.  This allows
you to type them, followed by a dot, and get autocomplete options on
them.</p>
<p>Changed <tt class="literal"><span class="pre">introspect.getRoot()</span></tt> to identify some situations where
strings shouldn't be considered roots.  For example:</p>
<pre class="literal-block">
&gt;&gt;&gt; import PyCrust  # To illustrate the potential problem.
&gt;&gt;&gt; len('PyCrust.py')
</pre>
<p>Typing the dot at the end of &quot;PyCrust&quot; in the second line above should
NOT result in an autocompletion list because &quot;PyCrust&quot; is part of a
string in this context, not a reference to the PyCrust module object.
Similar reasoning applies to call tips.  For example:</p>
<pre class="literal-block">
&gt;&gt;&gt; len('dir(')
</pre>
<p>Typing the left paren at the end of &quot;dir&quot; should NOT result in a call
tip.</p>
<p>Both features now behave properly in the examples given.  However,
there is still the case where whitespace precedes the potential root
and that is NOT handled properly.  For example:</p>
<pre class="literal-block">
&gt;&gt;&gt; len('this is a dir(')
</pre>
<p>and:</p>
<pre class="literal-block">
&gt;&gt;&gt; len('This is PyCrust.py')
</pre>
<p>More code needs to be written to handle more complex situations.</p>
<p>Added <tt class="literal"><span class="pre">locals=None</span></tt> parameter to <tt class="literal"><span class="pre">Shell.__init__()</span></tt>.</p>
<p>Added support for magic attribute retrieval.  Users can change this
with:</p>
<pre class="literal-block">
&gt;&gt;&gt; shell.editor.autoCompleteIncludeMagic = 0
</pre>
<p>Added the ability to set filters on auto completion to exclude
attributes prefixed with a single or double underscore.  Users can
exclude one or the other or both with:</p>
<pre class="literal-block">
&gt;&gt;&gt; shell.editor.autoCompleteExcludeSingle = 1
&gt;&gt;&gt; shell.editor.autoCompleteExcludeDouble = 1
</pre>
</div>
<div class="section" id="id2">
<h2><a class="toc-backref" href="#id35" name="id2">0.5 (8/8/2001)</a></h2>
<p>Mostly just a final version change before creating a release.</p>
</div>
<div class="section" id="to-8-7-2001">
<h2><a class="toc-backref" href="#id36" name="to-8-7-2001">0.4 (8/4/2001 to 8/7/2001)</a></h2>
<p>Changed version/revision handling.</p>
<p>Fixed bugs.</p>
</div>
<div class="section" id="to-8-3-2001">
<h2><a class="toc-backref" href="#id37" name="to-8-3-2001">0.3 (8/2/2001 to 8/3/2001)</a></h2>
<p>Removed lots of cruft.</p>
<p>Added lots of docstrings.</p>
<p>Imported to CVS repository at SourceForge.</p>
<p>Added call tips.</p>
</div>
<div class="section" id="to-8-2-2001">
<h2><a class="toc-backref" href="#id38" name="to-8-2-2001">0.2 (7/30/2001 to 8/2/2001)</a></h2>
<p>Renamed several files.</p>
<p>Added command autocompletion.</p>
<p>Added menus to PyCrust.py: File, Edit and Help.</p>
<p>Added sample applications: <tt class="literal"><span class="pre">PyCrustAlaCarte.py</span></tt>,
<tt class="literal"><span class="pre">PyCrustAlaMode.py</span></tt>, and <tt class="literal"><span class="pre">PyCrustMinimus.py</span></tt>.</p>
</div>
<div class="section" id="to-7-19-2001">
<h2><a class="toc-backref" href="#id39" name="to-7-19-2001">0.1 (7/1/2001 to 7/19/2001)</a></h2>
<p>Added basic syntax coloring much like Boa.</p>
<p>Added read-only logging much like IDLE.</p>
<p>Can retrieve a previous command by putting the cursor back on that
line and hitting enter.</p>
<p>Stdin and raw_input operate properly so you can now do <tt class="literal"><span class="pre">help()</span></tt> and
<tt class="literal"><span class="pre">license()</span></tt> without hanging.</p>
<p>Redefined &quot;quit&quot;, &quot;exit&quot;, and &quot;close&quot; to display a better-than-nothing
response.</p>
<p>Home key honors the prompt.</p>
<p>Created SourceForge account, but nothing was posted.</p>
</div>
<div class="section" id="in-the-beginning-there-was-pie-7-1-2001">
<h2><a class="toc-backref" href="#id40" name="in-the-beginning-there-was-pie-7-1-2001">In the beginning, there was pie... (7/1/2001)</a></h2>
<p>Blame it all on IDLE, Boa and PythonWin.  I was using all three, got
frustrated with their dissimilarities, and began to let everyone know
how I felt.  At the same time, Scintilla looked like an interesting
tool to build a shell around.  And while I didn't receive much in the
way of positive feedback, let alone encouragement, I just couldn't let
go of the idea of a Scintilla-based Python shell.  Then the PythonCard
project got to the point where they were talking about including a
shell in their development environment.  That was all the incentive I
needed.  PyCrust had to happen...</p>
</div>
</div>
</div>
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