pandas读取csv文件，日期项幻化出3种显示格式，如何避免？

#  !/usr/bin/python3
#  coding:utf-8
#  Date:  2022/7/1 16:15
#  Name:  交易汇总.py
 import pandas as pd
df = pd.read_csv(r"D:\新建文件夹\mNbar.csv", engine='python')
 print(df)