我有两个从CSV文件加载的数据框:
time_df:包含我想要的所有日期,如下所示
0 2017-01-31
1 2017-01-26
2 2017-01-12
3 2017-01-09
4 2017-01-02
price_df:包含其他字段和许多我不需要的日期
Date NYSEARCA:TPYP NYSEARCA:MENU NYSEARCA:SLYV NYSEARCA:CZA
0 2017-01-31 NaN 16.56 117.75 55.96
1 2017-01-26 NaN 16.68 116.89 55.84
2 2017-01-27 NaN 16.70 118.47 56.04
3 2017-01-12 NaN 16.81 119.14 56.13
5 2017-01-09 NaN 16.91 120.00 56.26
6 2017-01-08 NaN 16.91 120.00 56.26
7 2017-01-02 NaN 16.91 120.00 56.26
我的目的是删除price_df中日期不等于time_df中日期的行
尝试:
del price_df['Date'] if price_df['Date']!=time_df['Date']
但是我不能打印print(price_df['Date']!= time_df['Date'])
但它显示下一个错误:Can only compare identically-labeled Series objects
答案 0 :(得分:1)
内心join
可以修复问题:
time_df.merge(price_df, on='Date',copy=False)