title: Why does it fail in downloading tweets on excel?
body: <pre><code>texto=[]
  date=[]
  
  api = tweepy.API(auth)
  
  uno = tweepy.Cursor (api.search,q=`Bocconi`, rpp=100, result_type="recent",          include_entities=True, lang="it").items()
  
  
  for i in uno:
  
      o = i.text
      g = str(o).replace('\n',' ').replace('\r\n', ' ').replace('%\n%', ' ').replace('\r', ' ').replace('%\r%', ' ').replace('%\r\n%', ' ') 
  
      texto.append(g)
      e=i.created_at
      date.append(e) 
  
  Bocconi = pd.DataFrame(index=range(0,len(texto)))
  
  Bocconi['texto']=texto
  Bocconi['date']=date
  
  Bocconi.to_csv("Bocconi.csv",sep='\t')
  </code></pre>
  
  <p>I get this specific failure:</p>
  
  <blockquote>
    <p>return codecs.charmap_encode(input,errors,encoding_table) UnicodeEncodeError: 'charmap' codec can't encode character u'\u2714' in position 0: character maps to undefined> -</p>
  </blockquote>