Data Frame Exercise

Hi, 

I'm trying to write a simple app to append csv files. I'm going through the tutorial exercise with the following code:

import pandas as pd
data = [1,2,3,4,5]
df = pd.DataFrame(data)
print df

It's supposed to return 

     0
0    1
1    2
2    3
3    4
4    5

However when I ran these lines it only returned

"

Empty DataFrame
Columns: []
Index: []

Process finished with exit code 0

"

Help is much appreciated!

Thanks,

Gary