title: How to show all columns' names on a large pandas dataframe?
body: <p>I have a dataframe that consist of hundreds of columns, and I need to see all column names.</p>
  
  <p>What I did:</p>
  
  <pre><code>In[37]:
  data_all2.columns
  </code></pre>
  
  <p>The output is:</p>
  
  <pre><code>Out[37]:
  Index(['customer_id', 'incoming', 'outgoing', 'awan', 'bank', 'family', 'food',
         'government', 'internet', 'isipulsa',
         ...
         'overdue_3months_feature78', 'overdue_3months_feature79',
         'overdue_3months_feature80', 'overdue_3months_feature81',
         'overdue_3months_feature82', 'overdue_3months_feature83',
         'overdue_3months_feature84', 'overdue_3months_feature85',
         'overdue_3months_feature86', 'loan_overdue_3months_total_y'],
        dtype='object', length=102)
  </code></pre>
  
  <p>How do I show <em>all</em> columns, instead of a truncated list?</p>