从pandas dataFrame中去掉NaT和重复项，以获得一系列日期时间值

import pandas as pd

df = pd.DataFrame({'date': ['2022-01-01', '2022-01-02', '2022-01-03', pd.NaT, '2022-01-03']})

df = df.dropna(subset=['date'])

df = df.drop_duplicates(subset=['date'])

import pandas as pd

df = pd.DataFrame({'date': ['2022-01-01', '2022-01-02', '2022-01-03', pd.NaT, '2022-01-03']})

df = df.dropna(subset=['date'])
df = df.drop_duplicates(subset=['date'])

print(df['date'])