[USER (data scientist)]: Can you help me change the 'Date' column to a datetime format? Please generate the code with the output in series type.
My template of code snippet is:

---BEGIN CODE TEMPLATE---

import pandas as pd
import pickle
from decision_company import read_csv_file, convert_to_datetime, get_max, to_list, get_min_value, sort_by_values, get_first_n_rows, create_date_offset, filter_by_date, concatenate_objects, reset_index, rename_columns, bind_dataframe

atp_tennis = read_csv_file('atp_tennis.csv')

# YOUR SOLUTION BEGIN:
<code1>
[GENERATE 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

# MY SOLUTION BEGIN:
