1In[1]: import pandas as pd
2In[2]: df = pd.DataFrame([ pd.Timestamp('20150111'),
3 pd.Timestamp('20150301') ], columns=['date'])
4In[3]: df['today'] = pd.Timestamp('20150315')
5In[4]: df
6Out[4]:
7 date today
80 2015-01-11 2015-03-15
91 2015-03-01 2015-03-15
10
11In[5]: (df['today'] - df['date']).dt.days
12Out[5]:
130 63
141 14
15dtype: int64
16