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Date: Tue, 9 Sep 2014 13:57:10 -0400
Subject: How to exit from embedded IPython shell?
From: Andy Zhang <andy.zhang@gmail.com>
To: python-list@python.org
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Hi,

I am embedding IPython inside a c application, by running PYTHONSTARTUP
file which is:

import IPython
IPython.embed()

Then the application interact with user input via stdin.  After the user is
done, she would type EOF.  The program should exit, but keep all the python
objects in memory, and the user can re-enter python by calling the function
again.

Because of the embedded IPython, the user needs to enter EOF twice (First
EOF exit IPython, second exit outter Python).  I wonder whether it is
possible to exit the outer Shell in my C code so that user can type one EOF
and exit IPython and Python?

        char *startup = Py_GETENV("PYTHONSTARTUP");
        if (startup != NULL && startup[0] != '\0') {
FILE *fp = fopen(startup, "r");
if (fp != NULL) {
(void) PyRun_SimpleFile(fp, startup);
PyErr_Clear();
fclose(fp);
}
  }
        retval = PyRun_AnyFile(stdin, (const char *) "<stdin>");

Many thanks,

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<div dir=3D"ltr">Hi,<div><br></div><div>I am embedding IPython inside a c a=
pplication, by running PYTHONSTARTUP file which is:</div><div><br></div><di=
v><div>import IPython</div><div>IPython.embed()</div></div><div><br></div><=
div>Then the application interact with user input via stdin. =C2=A0After th=
e user is done, she would type EOF. =C2=A0The program should exit, but keep=
 all the python objects in memory, and the user can re-enter python by call=
ing the function again.</div><div><br></div><div>Because of the embedded IP=
ython, the user needs to enter EOF twice (First EOF exit IPython, second ex=
it outter Python). =C2=A0I wonder whether it is possible to exit the outer =
Shell in my C code so that user can type one EOF and exit IPython and Pytho=
n?</div><div><br></div><div><div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 char *sta=
rtup =3D Py_GETENV(&quot;PYTHONSTARTUP&quot;);</div><div>=C2=A0 =C2=A0 =C2=
=A0 =C2=A0 if (startup !=3D NULL &amp;&amp; startup[0] !=3D &#39;\0&#39;) {=
</div><div><span class=3D"" style=3D"white-space:pre">				</span>FILE *fp =
=3D fopen(startup, &quot;r&quot;);</div><div><span class=3D"" style=3D"whit=
e-space:pre">				</span>if (fp !=3D NULL) {</div><div><span class=3D"" styl=
e=3D"white-space:pre">					</span>(void) PyRun_SimpleFile(fp, startup);</di=
v><div><span class=3D"" style=3D"white-space:pre">					</span>PyErr_Clear()=
;</div><div><span class=3D"" style=3D"white-space:pre">					</span>fclose(f=
p);</div><div><span class=3D"" style=3D"white-space:pre">				</span>}</div>=
<div><span class=3D"" style=3D"white-space:pre">		</span> =C2=A0}</div><div=
>=C2=A0 =C2=A0 =C2=A0 =C2=A0 retval =3D PyRun_AnyFile(stdin, (const char *)=
 &quot;&lt;stdin&gt;&quot;);</div></div></div><div><br></div><div>Many than=
ks,</div><div><br></div><div><br></div><div><br></div></div>

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