Separate month from year in Python data frame

Question

我有一个 1000 x 6 维数据框，其中一列的标题是“日期”，其中日期以“JAN2014”、“JUN2002”等格式显示...我想将此列拆分为两个单独的列：“Year”和“Month”所以JAN将在“Month”列中，2014将在“Year”列中等等。谁能告诉我如何在Python中做到这一点？

Answer 1

You can use the str accessor and indexing:

df['Month'] = df['Date'].str[:3]
df['Year'] = df['Date'].str[3:]

Example:

df = pd.DataFrame({'Date':['JAN2014','JUN2002']})
df['Month'] = df['Date'].str[:3]
df['Year'] = df['Date'].str[3:]

print(df)

Output:

      Date Month  Year
0  JAN2014   JAN  2014
1  JUN2002   JUN  2002