Question

我是熊猫的初学者，我必须首先调用数据帧 DATA_DF包含许多字段，我对DATA_DF['Date effet']感兴趣的类型为datetime 我有其他数据框称为TAUX_DF，包含年份，每年都有一个值

TAUX_DF =
Année   <10 ans >10 ans
1987    2,8168% 3,4664%
1988    2,8168% 3,4664%
1989    2,8168% 3,4664%
1990    2,8168% 3,4664%

我想在DATA_DF上创建一个名为＆＃34; DATA_DF [＆＃39; Taux technique＆＃39;]＆＃34; 从DATA_DF['Date effet'].dt.year开始将其与TAUX_DF['Année']上的年份进行比较，并将这样的值放在Excel上

=SI(G5>120;RECHERCHEV(ANNEE(C5);Taux!$A$2:$C$29;3;FAUX);RECHERCHEV(ANNEE(C5);Taux!$A$2:$C$29;2;FAUX))

Answer 1

DATA_DF['Année'] = DATA_DF['Date effet'].dt.year ## ==> make column with year of the data_df in order to compare (merge) it later on with the 'TAUX_DF'.

DATA_DF = pd.merge(DATA_DF,TAUX_DF,left_on='Année',right_on='Année', how='left')

如何从多个数据帧中选择数据

1 个答案: