I'm using Python 2.7 and my data looks like this: 

```
import pandas as pd            
df = pd.DataFrame({ 'DateVar' : ['9/1/2013', '10/1/2013', '2/1/2014'],
                'Field' : 'foo' })   

```

I want to parse DateVar to create 2 new fields: a 'month' field and a 'year' field. 

I was able to tokenize 'DateVar' via vectorized string method:

```
df.DateVar.str.split('/')

```

This is a little closer to what I want, so then I next tried to slice the months [9, 10, 2] using the following code:

```
df.DateVar.str.split('/')[0]

```

But unexpectedly, I'm getting:

['9', '1', '2013']

So how can I get a vector of all the months?