如何从带有时间戳的数组中获取数据-python中的年，月，日？

Question

How can I get from array with Timestamps - years, months, days? I have DataFrame where index is Timestamps and I try this

for i in data_frame.index:
    print(datetime.fromtimestamp(i).isoformat())

But I got this error:

print(datetime.fromtimestamp(i).isoformat()) ===>
===> TypeError: an integer is required (got type Timestamp)

Answer 1

first use df['date'] = pd.to_datetime(df['timestap']) to convert to proper format then create new columns for year, month, and day

df['year'] = df['date'].dt.year
df['month'] = df['date'].dt.month
df['day'] = df['date'].dt.day