日期时间格式，但我只想要列中的月份/年份

Question

I am performing some data cleaning to my dataframe and there are two columns labelled Tranc_Year and Tranc_Month.

The two columns are originally of int64 datatype and I want to convert them to datetime.

However, after converting it to datetime with the following code:

df_train.loc[:,'Tranc_Year'] = pd.to_datetime(df_train['Tranc_Year'], format='%Y') df_train.loc[:,'Tranc_Month'] = pd.to_datetime(df_train['Tranc_Month'], format='%m')

The display becomes as follows:

How do i convert to date time while maintaining the original display?

Answer 1

Use to_datetime with columns year, month, day by rename by dictionary:

d = {'Tranc_Year':'year','Tranc_Month':'month'}

df1 = df_train[['Tranc_Year', 'Tranc_Month']].rename(columns=f).assign(day=1)
df_train['date'] = pd.to_datetime(df1)