Description
In [1]: dates = pd.period_range('01-Jan-2015', '01-Jan-2016', freq='M')
...: series = pd.TimeSeries(np.arange(dates.size), dates)
...:
In [2]: series
Out[2]:
2015-01 0
2015-02 1
2015-03 2
2015-04 3
2015-05 4
2015-06 5
2015-07 6
2015-08 7
2015-09 8
2015-10 9
2015-11 10
2015-12 11
2016-01 12
Freq: M, dtype: int32
In [3]: series.index += 1
In [4]: series
Out[4]:
541 0
542 1
543 2
544 3
545 4
546 5
547 6
548 7
549 8
550 9
551 10
552 11
553 12
dtype: int32
In [5]: series.index
Out[5]: Int64Index([541, 542, 543, 544, 545, 546, 547, 548, 549, 550, 551, 552, 553], dtype='int64')
In [6]: pd.__version__
Out[6]: '0.13.1-339-g6c3755b'