A DataFrame can have its index reset by using the .reset_index(). A common use of this, is to move the contents of a DataFrame object's index into one or more columns. The following code moves the symbols in the index of sp500 into a column and replaces the index with a default integer index. The result is a new DataFrame, not an in-place update. The code is as follows:
In [102]: # reset the index, moving it into a column reset_sp500 = sp500.reset_index() reset_sp500 Out[102]: Symbol Sector Price BookValue 0 MMM Industrials 141.14 26.668 1 ABT Health Care 39.60 15.573 2 ABBV Health Care 53.95 2.954 3 ACN Information Technology 79.79 8.326 4 ACE Financials 102.91 86.897 .. ... ... ... ... 495 YHOO Information Technology 35.02 12.768 496 YUM Consumer Discretionary...