<SYSTEM_TASK:>
Given the following text problem statement, write Python code to implement the functionality described below in problem statement
<END_TASK>
<USER_TASK:>
Problem:
I have the following DF
<ASSISTANT_TASK:>
Python Code:
import pandas as pd
df = pd.DataFrame({'Date':['2019-01-01','2019-02-08','2019-02-08', '2019-03-08']})
df['Date'] = pd.to_datetime(df['Date'])
df['Date'] = df['Date'].dt.strftime('%b-%Y')
<END_TASK>