[USER (data scientist)]: Can you help me change the 'Date' column to a datetime format? Please generate a Series by converting the 'Date' column to datetime format in the ATP tennis dataset.
My template of code snippet is:

---BEGIN CODE TEMPLATE---

import pandas as pd
import pickle

atp_tennis = pd.read_csv('atp_tennis.csv')

# YOUR SOLUTION BEGIN:
<code1>
[COMPLETE YOUR CODE] 
</code1>
# YOUR SOLUTION END

print(atp_tennis['Date'])

# save data
pickle.dump(atp_tennis['Date'],open("./pred_result/atp_tennis_Date.pkl","wb"))

---END CODE TEMPLATE---

[YOU (AI assistant)]: Sure! You can use this code to change the 'Date' column to datetime format
'''
import pandas as pd
import pickle

atp_tennis = pd.read_csv('atp_tennis.csv')

# YOUR SOLUTION BEGIN:
