Restart the interactive python shell like in IDLE
tjreedy at udel.edu
Thu Jun 11 15:04:22 EDT 2009
Chris Rebert wrote:
> On Wed, Jun 10, 2009 at 12:01 PM, Matt Burson<msburson at gmail.com> wrote:
>> Is there a way to reproduce the behavior of IDLE's restart shell ability by
>> using a function? I thought there would be since you can exit python by
>> executing the simple quit() function I thought there would be an equally
>> simple function name something like restart(). I'd prefer something like
>> this as opposed to having to exit the shell and then start it up again to
>> refresh it.
> I believe IDLE itself implements the "restart" capability by killing
> and re-launching its Python interpreter subprocess, so it's not like
> it's using some hidden capability of Python to accomplish this.
> Is doing Ctrl+D, up-arrow, Enter really that hard? It's even fewer
> keystrokes than "restart()"...
This will do part of what you want:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'a' is not defined
That will not reset sys.modules, which is the only other thing I can
imagine being worried about.
The main reason IDLE has a restart is so that when you run a file after
editing, you can be sure the behavior you see is what you get when
running the file without IDLE, with a fresh interpreter. Another use of
refresh is when creating example interactive sessions for doctest or
book examples. Again, one wants to make sure that the example does not
depend on previous entries not included in the example. For ordinary
interactive exploration, refresh is seldom needed.
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