title: In NLTK, how do I get the concordance of a text?
body: <pre><code>&gt;&gt;&gt; c = t.concordance('president')
  Displaying 25 of 142 matches:
  of Hays , Kan. as the school's new president . Dr. Clark will succeed Dr. J. R.
   dollars , said C. Virgil Martin , president of Carson Pirie Scott &amp; Co. , comm
  dants '' . Washington , July 24 -- president Kennedy today pushed aside other W
  ionwide television and radio . The president spent much of the week-end at his 
  drafts '' . Salinger said the work president Kennedy , advisers , and members o
  miss them . Washington , Feb. 9 -- president Kennedy today proposed a mammoth n
  railroad retirement programs . The president , in a special message to Congress
  ged care plan , similar to one the president sponsored last year as a senator ,
  or up to 240 days an illness . The president noted that Congress last year pass
  e medical and dental schools . The president said the nation's 92 medical and 4
  go up to 21 millions by 1966 . The president recommended federal `` matching gr
  community health services '' , the president called for doubling the present 10
   . In the child health field , the president said he will recommend later an in
  nstitute . Asks research funds The president said he will ask Congress to incre
  building research facilities . The president said he will also propose increasi
  ernment research in medicine . The president said his proposals combine the `` 
  e ( D. , Ore. ) in connection with president Eisenhower's cabinet selections in
  r's cabinet selections in 1953 and president Kennedy's in 1961 . Oslo The most 
  e was critical of what he feels is president Kennedy's tendency to be too conci
  cation . But he did recommend that president Kennedy state clearly that if Comm
   any observer would have said that president Kennedy had blended a program that
  nquency in the United States . The president is deeply concerned over this prob
  orities on juvenile problems . The president asks the support and cooperation o
  rime trend . Offenses multiply The president has also called upon the Attorney 
  h the problem . Simultaneously the president announced Thursday the appointment
  &gt;&gt;&gt; print c
  None
  </code></pre>
  
  <p>But I can't set it to a variable...I want to be able to set it to a variable so I can do stuff with it.</p>