python程序输出Date不显示日期

Question

import numpy as np
import pandas as pd
from pandas import Series,DataFrame
import akshare as ak

time

from datetime import datetime
pd_code="sh600582"
xhp_code="sh600519"
start_date='20180101'
end_date='20190101'

pd_data = ak.stock_zh_a_cdr_daily(pd_code,start_date,end_date).sort_index()
xhp_data = ak.stock_zh_a_cdr_daily(xhp_code,start_date,end_date).sort_index()
df_gldq =pd.concat([pd_data['close'],xhp_data['close']],axis=1,keys=['600582','600519'])

df_gldq.index.name = 'Date' # 日期为索引列

print(df_gldq)
python程序输出Date不显示日期，要怎么改代码，才能输出Date日期？