问当相应的SELECT语句工作时，为什么MySQL DELETE语句会失败？

EN

import pymysql
import pandas as pd

# Establish connection.
connection = pymysql.connect(**conf)
cursor = connection.cursor()

# Delete rows of table.
try:
    cursor.execute("DELETE FROM Basic WHERE Date = '2022-11-25 04:00:00';")

except Exception as ex:
    print("Exception occured: %s" %ex) 

finally:
    connection.close()

# Check the table to see if deletion has occurred.
connection = pymysql.connect(**conf)
cursor = connection.cursor()
cursor.execute("SELECT * FROM Basic WHERE Date = '2022-11-25 04:00:00'")
connection.close()

df = pd.DataFrame(cursor.fetchall(), columns = ["Date", "State", "Price", "Demand"])