<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Does this apply to you: <a href="http://stackoverflow.com/questions/25288315/importerror-cannot-import-name-defaultdict" class="">http://stackoverflow.com/questions/25288315/importerror-cannot-import-name-defaultdict</a><div class=""><br class=""></div><div class="">—</div><div class="">Alex</div><div class=""><br class=""><div style=""><blockquote type="cite" class=""><div class="">On Feb 26, 2015, at 2:24 PM, Lee, Jongdeog <<a href="mailto:jlee700@illinois.EDU" class="">jlee700@illinois.EDU</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; direction: ltr; font-family: Tahoma; font-size: 10pt;" class="">Hi,<div class=""><br class=""></div><div class=""> Does anybody know why I got this error when I do "./waf configure"?</div><div class=""> I am using a Centos machine and I do have the sudo authority.</div><div class=""><br class=""></div><div class=""><p style="margin-right: 0px; margin-left: 0px; font-size: 11px; font-family: Menlo;" class="">===================================================</p><p style="margin-right: 0px; margin-left: 0px; font-size: 11px; font-family: Menlo;" class="">Traceback (most recent call last):</p><p style="margin-right: 0px; margin-left: 0px; font-size: 11px; font-family: Menlo;" class=""> File "./waf", line 163, in ?</p><p style="margin-right: 0px; margin-left: 0px; font-size: 11px; font-family: Menlo;" class=""> from waflib import Scripting</p><p style="margin-right: 0px; margin-left: 0px; font-size: 11px; font-family: Menlo;" class=""> File "/home/tarek/jlee700/ndn-cxx/.waf-1.8.5-d178df7a9bb732db109001d6b461550f/waflib/Scripting.py", line 6, in ?</p><p style="margin-right: 0px; margin-left: 0px; font-size: 11px; font-family: Menlo;" class=""> from waflib import Utils,Configure,Logs,Options,ConfigSet,Context,Errors,Build,Node</p><p style="margin-right: 0px; margin-left: 0px; font-size: 11px; font-family: Menlo;" class=""> File "/home/tarek/jlee700/ndn-cxx/.waf-1.8.5-d178df7a9bb732db109001d6b461550f/waflib/Utils.py", line 7, in ?</p><p style="margin-right: 0px; margin-left: 0px; font-size: 11px; font-family: Menlo;" class=""> from collections import deque,defaultdict</p><p style="margin-right: 0px; margin-left: 0px; font-size: 11px; font-family: Menlo;" class="">ImportError: cannot import name defaultdict</p><div class=""><span style="font-family: Menlo; font-size: 11px;" class="">===================================================</span></div><div class=""><font face="Menlo" class=""><span style="font-size: 11px;" class=""><br class=""></span></font></div><div class=""><font face="Menlo" class=""><span style="font-size: 11px;" class=""> Any advice would be appreciated.</span></font></div><div class=""><font face="Menlo" class=""><span style="font-size: 11px;" class=""><br class=""></span></font></div><div class=""><font face="Menlo" class=""><span style="font-size: 11px;" class="">Best wishes,<br class=""></span></font><div style="font-family: Tahoma; font-size: 13px;" class=""><div style="font-family: Tahoma; font-size: 13px;" class=""><div class="">Jongdeog Lee (JD)</div><div class=""><br class=""></div><div class="">------------------------------------------------</div><div class=""><i class="">Ph.D. Student</i></div><div class=""><i class="">Department of Computer Science</i></div><div class=""><i class="">University of Illinois at Urbana-Champaign</i></div></div></div></div></div></div></div></blockquote></div></div></body></html>