Python'timestamp'无法转换为MySQL类型

我把excel读入一个数据框。 当我尝试将数据插入到表中时,出现错误:

格式参数;Python'timestamp'无法转换为MySQL

当我打印出转换后的日期时,我得到的格式是“YYYY-MM-DD HH:MM:SS”,这似乎是MySQL需要的格式?

CREATE TABLE `Weight` (
 `id` int(11) NOT NULL AUTO_INCREMENT,
 `Date` datetime NOT NULL,
 `Weight` float NOT NULL,
 PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_c

我的Python脚本,稍微扩展了一下,包含了一些虚拟数据:

import pandas as pd
import mysql.connector
import numpy as np

#import csv in dataframe
#df = pd.read_excel('/excel.xlsx')
#dataframe for this question on stackoverflow
startDate = '2011-05-03'
dateList = pd.date_range(startDate, periods=1000).tolist()
df = pd.DataFrame({'Day': dateList,
                'Weight': np.random.normal(loc=68, scale=10, size=(1000,))
              })
df['Day'] = pd.to_datetime(df['Day'],errors='raise')

mydb = mysql.connector.connect(
    host="host",
    user="user",
    port="port",
    passwd="Password",
    database="database_name"
)

mycursor = mydb.cursor()
sql = "INSERT INTO Weight (Date, Weight) values (%s, %s)"

for index, row in df.iterrows() :
    val = (row['Day'], row['Weight'])
    mycursor.execute(sql, val)

要清楚的是,它在网络上失败了 执行(sql,val)