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Date: Fri, 8 May 2015 09:48:32 -0600
Subject: Re: functions, optional parameters
From: Ian Kelly <ian.g.kelly@gmail.com>
To: Python <python-list@python.org>
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On May 8, 2015 9:26 AM, "Steven D'Aprano" <
steve+comp.lang.python@pearwood.info> wrote:
>
> Do you think that Python will re-compile the body of the function every
time
> you call it? Setting the default is part of the process of compiling the
> function.

To be a bit pedantic, that's not accurate. The default is evaluated when
the function object is created, i.e. when the def statement is executed at
runtime, not when the underlying code object is compiled.

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<p dir="ltr">On May 8, 2015 9:26 AM, &quot;Steven D&#39;Aprano&quot; &lt;<a href="mailto:steve%2Bcomp.lang.python@pearwood.info">steve+comp.lang.python@pearwood.info</a>&gt; wrote:<br>
&gt;<br>
&gt; Do you think that Python will re-compile the body of the function every time<br>
&gt; you call it? Setting the default is part of the process of compiling the<br>
&gt; function.</p>
<p dir="ltr">To be a bit pedantic, that&#39;s not accurate. The default is evaluated when the function object is created, i.e. when the def statement is executed at runtime, not when the underlying code object is compiled.</p>

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