Thread: Re: [Jython-users] ImportError: No module named re

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<div>This looks like you placed a jar-file inside a jar-file.</div>

<div>I never tried this, but I doubt that Jython (actually Java?) can handle such nesting of jars (maybe this feature was added and I am overlooking it, sorry in that case). According to <a href="http://www.jython.org/jythonbook/en/1.0/SimpleWebApps.html?highlight=explode#distributing-via-standalone-jar" target="_blank">http://www.jython.org/jythonbook/en/1.0/SimpleWebApps.html?highlight=explode#distributing-via-standalone-jar</a> (which is somewhat dated though) you should &quot;explode&quot; jython-standalone, add your code-files and then jar it again. I suppose you would have to do this with your other dependencies too or distribute them as separate files.</div>

<div>(Maybe you better try this with a toy-example first, before re-packing all the jars).</div>

<div>Looking at this, the need for some kind of deployment-tool that would automate such a process comes to my mind. You should maybe check, whether such a thing already exists (maybe for Java-apps in general).</div>

<div>&nbsp;</div>

<div>Best</div>

<div>&nbsp;</div>

<div>Stefan</div>

<div>&nbsp;</div>

<div>&nbsp;
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<div style="margin: 0 0 10.0px 0;"><b>Gesendet:</b>&nbsp;Dienstag, 05. Juli 2016 um 16:21 Uhr<br/>
<b>Von:</b>&nbsp;&quot;Ranga Babu Mandada&quot; &lt;Ran...@ip...&gt;<br/>
<b>An:</b>&nbsp;&quot;Stefan Richthofer&quot; &lt;Ste...@gm...&gt;<br/>
<b>Cc:</b>&nbsp;&quot;jyt...@li...&quot; &lt;jyt...@li...&gt;<br/>
<b>Betreff:</b>&nbsp;Re: [Jython-users] ImportError: No module named re</div>

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<div style="font-size: 12.0pt;color: rgb(0,0,0);background-color: rgb(255,255,255);font-family: Calibri , Arial , Helvetica , sans-serif;">
<p>Hello Stefan,</p>

<p>&nbsp;</p>

<p>I am packaging my application as a runnable jar ex: application.jar.</p>

<p>&nbsp;</p>

<p>It&#39;s contents are like below:</p>

<p>&nbsp;</p>
&nbsp;

<p>when I run my application via IDE(Intellij IDEA) it&#39;s working properly.</p>

<p>sys.path :&nbsp;</p>

<p><span style="color: rgb(0,111,201);">[&#39;/home/rmandada/.m2/repository/org/python/jython-standalone/2.5.2/Lib&#39;, &#39;/home/rmandada/.m2/repository/org/python/jython-standalone/2.5.2/jython-standalone-2.5.2.jar/Lib&#39;, &#39;__classpath__&#39;, &#39;__pyclasspath__/&#39;]</span></p>

<p>&nbsp;</p>

<p>But when I run the application from command&nbsp;line using <span style="color: rgb(0,111,201);"> java -jar application.jar</span> I am getting the above error.</p>

<p>now sys.path is :</p>

<p>&nbsp;</p>

<p><span style="color: rgb(0,111,201);">[&#39;/home/rmandada/amelia-web.jar!/lib/Lib&#39;, &#39;__classpath__&#39;, &#39;__pyclasspath__/&#39;]&#8203;</span></p>

<p>&nbsp;</p>

<p>I tried to add the path like below code.</p>

<p>&nbsp;</p>

<div><span style="color: rgb(0,111,201);">PySystemState systemState = new PySystemState();</span></div>

<div><span style="color: rgb(0,111,201);">systemState.path.append(Py.newString(&quot;lib/jython-standalone-2.5.2.jar/Lib&quot;));</span></div>

<div><span style="color: rgb(0,111,201);">Py.setSystemState(systemState);</span></div>

<div><span style="color: rgb(0,111,201);">return new ScriptEngineManager().getEngineByName(&quot;python&quot;);</span></div>

<div>&nbsp;</div>

<div><span style="color: rgb(0,111,201);"><span style="color: rgb(0,0,0);">&#8203;But it&#39;s not working . Please tell me how to add the path of&nbsp;jython-standalone-2.5.2.jar&#8203; which lies in lib folder of application.jar.</span></span></div>

<p>&nbsp;</p>

<p>&nbsp;</p>

<p>&nbsp;</p>

<div id="Signature">
<div style="font-family: Calibri , Arial , Helvetica , sans-serif;margin: 0;">Regards,<br/>
Ranga Babu<br/>
&nbsp;</div>
</div>

<div style="color: rgb(33,33,33);">
<hr style="display: inline-block;width: 98.0%;"/>
<div id="divRplyFwdMsg"><font color="#000000" face="Calibri, sans-serif" style="font-size: 11.0pt;"><b>From:</b> Stefan Richthofer &lt;Ste...@gm...&gt;<br/>
<b>Sent:</b> Friday, June 24, 2016 4:58 PM<br/>
<b>To:</b> Ranga Babu Mandada<br/>
<b>Cc:</b> jyt...@li...<br/>
<b>Subject:</b> Re: [Jython-users] ImportError: No module named re</font>

<div>&nbsp;</div>
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<div>Hello Ranga,</div>

<div>&nbsp;</div>

<div>this looks like in your command-line Jython-launch cannot find its lib-folder/doesn&#39;t have Jython-path configured properly.</div>

<div>You should first identify the location of Jython&#39;s lib-folder (the folder containing the .py-files making up the major</div>

<div>part of the standard lib). Then</div>

<div>- you can check via import sys; print sys.path whether that folder is on the path.</div>

<div>- you can verify if the problem is cured by manually adding that path via sys.path.append</div>

<div>- you can fix you Jython-path configuration by providing the environment variable JYTHONPATH to the jvm (see jython --help)</div>

<div>- I guess things get easier or issue might be self-soved if you call Jython via its launcher rather than manually via java-command.</div>

<div>- finally you can consider how to solve this for distribution, e.g. by distributing jython-standalone</div>

<div>(which contains the lib folder) or by providing an installer or launcher that makes sure the path is configured correctly for the user</div>

<div>&nbsp;</div>

<div>Hope this somewhat helps.</div>

<div>Best</div>

<div>&nbsp;</div>

<div>Stefan</div>

<div>&nbsp;</div>

<div>&nbsp;</div>

<div>&nbsp;
<div style="margin: 10.0px 5.0px 5.0px 10.0px;padding: 10.0px 0 10.0px 10.0px;border-left: 2.0px solid rgb(195,217,229);">
<div style="margin: 0 0 10.0px 0;"><b>Gesendet:</b>&nbsp;Freitag, 24. Juni 2016 um 12:17 Uhr<br/>
<b>Von:</b>&nbsp;&quot;Ranga Babu Mandada&quot; &lt;Ran...@ip...&gt;<br/>
<b>An:</b>&nbsp;&quot;jyt...@li...&quot; &lt;jyt...@li...&gt;<br/>
<b>Betreff:</b>&nbsp;[Jython-users] ImportError: No module named re</div>

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<div style="font-size: 12.0pt;color: rgb(0,0,0);background-color: rgb(255,255,255);font-family: Calibri , Arial , Helvetica , sans-serif;">
<p>&nbsp;</p>

<div style="font-size: 12.0pt;color: rgb(0,0,0);background-color: rgb(255,255,255);font-family: Calibri , Arial , Helvetica , sans-serif;"><span style="font-size: 12.0pt;">Hello,&nbsp;</span>

<div>
<p>&nbsp;</p>

<p>I am using Jython in java application to run python scripts. I am using&nbsp;<span style="font-size: 12.0pt;">j</span><span style="font-size: 12.0pt;">ython-standalone-2.5.2 as a dependency in pom.xml in maven project.</span></p>

<p><span style="font-size: 12.0pt;">when I run the application in IDE the script is running without problems.</span></p>

<p>But when I run the application from command line using<span style="color: rgb(255,0,0);"> java -jar application.jar&nbsp;<span style="color: rgb(0,0,0);">I get the following error</span></span></p>

<p><span style="color: rgb(255,0,0);"><span style="color: rgb(0,0,0);">ImportError: No module named re&#8203;.</span></span></p>

<p>&nbsp;</p>

<p><span style="color: rgb(255,0,0);"><span style="color: rgb(0,0,0);">Please help me in fixing the issue.</span></span></p>

<p>&nbsp;</p>

<div id="Signature">
<div style="font-family: Calibri , Arial , Helvetica , sans-serif;margin: 0;">Regards,<br/>
Ranga Babu<br/>
&nbsp;</div>
</div>
</div>
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