gpt4 book ai didi

python-3.x - 从日期时间索引输出唯一年份集

转载 作者:行者123 更新时间:2023-12-01 02:43:02 25 4
gpt4 key购买 nike

我有一个日期时间索引如下,

>>> temp
DatetimeIndex(['2017-01-03', '2017-01-04', '2017-01-05', '2017-01-06',
'2017-01-09', '2017-01-10', '2017-01-11', '2017-01-12',
'2017-01-13', '2017-01-16',
...
'2017-12-27', '2017-12-28', '2017-12-29', '2018-01-02',
'2018-01-03', '2018-01-04', '2018-01-05', '2018-01-08',
'2018-01-09', '2018-01-10'],
dtype='datetime64[ns]', length=251, freq=None)
>>> temp.year
Int64Index([2017, 2017, 2017, 2017, 2017, 2017, 2017, 2017, 2017, 2017,
...
2017, 2017, 2017, 2018, 2018, 2018, 2018, 2018, 2018, 2018],
dtype='int64', length=251)

我想输出唯一的年份,例如作为列表 [2017,2018]。我尝试了以下命令,但它没有按预期工作。

>>> temp.year.drop_duplicates
<bound method Index.drop_duplicates of Int64Index([2017, 2017, 2017, 2017, 2017,
2017, 2017, 2017, 2017, 2017,
...
2017, 2017, 2017, 2018, 2018, 2018, 2018, 2018, 2018, 2018],
dtype='int64', length=251)>

欢迎任何建议。

最佳答案

你错过了(),也有必要转换成列表:

L = temp.year.drop_duplicates().tolist()

L = list(temp.year.drop_duplicates())

另一种解决方案 unique :

L = list(temp.year.unique())

print (L)
[2017, 2018]

关于python-3.x - 从日期时间索引输出唯一年份集,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/48297287/

25 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com