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--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>I installed Ubuntu18.04 + ndnsim2.7</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Some issues have arisen because the latest version of ndnsim's visualization is not compatible with Python</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>1,</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>No visualization support (cannot import name core).</p><p class=MsoNormal>Traceback (most recent call last):</p><p class=MsoNormal> File "<string>", line 2, in <module></p><p class=MsoNormal> File "/home/zeinab/ndnSIM/ns-3/src/visualizer/visualizer/core.py", line</p><p class=MsoNormal>1875, in start</p><p class=MsoNormal> import sys</p><p class=MsoNormal>RuntimeError: maximum recursion depth exceeded while calling a Python object </p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>solution </p><p class=MsoNormal>to /ndnSIM/ns-3/src/visualizer/visualizer/hub.py "the beginning of the file modification" from Import Core "to" Import Core. " </p><p class=MsoNormal>HTTPS: //github.com/named-data-ndnSIM/ns-3-dev/blob/ndnSIM-ns-3.29/src/visualizer/visualizer/hud.py#L2</p><p class=MsoNormal> </p><p class=MsoNormal>2.print ("Could not load plugin% r:% s"% (filename, str (ex)), file = sys.stderr)</p><p class=MsoNormal>Solution:</p><p class=MsoNormal>Syntax error, delete "file ="</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>BR</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:smastorakis@unomaha.edu">Spyridon Mastorakis</a><br><b>Sent: </b>Sunday, January 5, 2020 10:14 PM<br><b>To: </b><a href="mailto:sdong7@crimson.ua.edu">Shuai Dong</a><br><b>Cc: </b><a href="mailto:hxy@cs.ua.edu">Hong, Xiaoyan</a>; <a href="mailto:ndnsim@lists.cs.ucla.edu">ndnsim@lists.cs.ucla.edu</a><br><b>Subject: </b>Re: [ndnSIM] ndnSIM visual problem</p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Which ndnSIM version are you using and what OS? <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Thanks,<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><div><div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='color:black'>Spyridon (Spyros) Mastorakis<br>Assistant Professor<br>Computer Science Department<br>University of Nebraska, Omaha<br>Peter Kiewit Institute Room 175A<br><a href="https://sites.google.com/site/spyridonmastorakis">https://sites.google.com/site/spyridonmastorakis</a><o:p></o:p></span></p></div></div></div></div></div><div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal>On Jan 2, 2020, at 11:37 AM, Shuai Dong <<a href="mailto:sdong7@crimson.ua.edu">sdong7@crimson.ua.edu</a>> wrote:<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><div><pre style='white-space:pre-wrap'>Hi, <o:p></o:p></pre><pre style='white-space:pre-wrap'>Could you help me to solve this problem when I execute the command "sudo ./waf --run=ndn-simple --vis"?<o:p></o:p></pre><pre style='white-space:pre-wrap'>No visualization support (cannot import name core).</pre><pre>Traceback (most recent call last):</pre><pre> File "<string>", line 2, in <module></pre><pre> File "/home/zeinab/ndnSIM/ns-3/src/visualizer/visualizer/core.py", line</pre><pre>1875, in start</pre><pre> import sys</pre><pre>RuntimeError: maximum recursion depth exceeded while calling a Python object<o:p></o:p></pre><pre style='white-space:pre-wrap'><o:p> </o:p></pre><pre style='white-space:pre-wrap'>Shuai</pre></div></div><p class=MsoNormal>_______________________________________________<br>ndnSIM mailing list<br><a href="mailto:ndnSIM@lists.cs.ucla.edu">ndnSIM@lists.cs.ucla.edu</a><br>https://urldefense.proofpoint.com/v2/url?u=http-3A__www.lists.cs.ucla.edu_mailman_listinfo_ndnsim&d=DwICAg&c=Cu5g146wZdoqVuKpTNsYHeFX_rg6kWhlkLF8Eft-wwo&r=eI5Bh74ovG-uIXQ5ksQETSPgRFzmJXjIZXneCqw580E&m=4oB2buMJK8xUwR9H9F3WEPQpkMbUeErqsE8EG0oZiq4&s=cp9DoiY2gx1PVOiEaY5JAFo0jSorLI4nQSJSs62hY2M&e= <o:p></o:p></p></div></blockquote></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>