使用Panda从日期列中提取年份

import pandas as pd

data = {'日期': ['2022-01-01', '2022-02-01', '2022-03-01', '2022-04-01']}
df = pd.DataFrame(data)

df['日期'] = pd.to_datetime(df['日期'])

df['年份'] = df['日期'].dt.year

import pandas as pd

data = {'日期': ['2022-01-01', '2022-02-01', '2022-03-01', '2022-04-01']}
df = pd.DataFrame(data)

df['日期'] = pd.to_datetime(df['日期'])
df['年份'] = df['日期'].dt.year

print(df)

          日期    年份
0 2022-01-01  2022
1 2022-02-01  2022
2 2022-03-01  2022
3 2022-04-01  2022