Pandas入门之十八：时间差

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Jupyter 服务器: 本地
Python 3: Not Started
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import pandas as pd
import numpy as np
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# 设置时间差，通过字符串
timefiff = pd.Timedelta('2 days 2 hours 15 minutes 30 seconds')
timefiff
Timedelta('2 days 02:15:30')



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# 设置时间差，通过数字
timefiff = pd.Timedelta(6,unit='h')
timefiff
Timedelta('0 days 06:00:00')
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timediff = pd.Timedelta(days=2)
timediff
Timedelta('2 days 00:00:00')
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s = pd.Series(pd.date_range('2020-1-1',periods=3,freq='D'))
s
0   2020-01-01
1   2020-01-02
2   2020-01-03
dtype: datetime64[ns]
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td = pd.Series([pd.Timedelta(days=i) for i in range(3)])
td
0   0 days
1   1 days
2   2 days
dtype: timedelta64[ns]
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# 通过时间差相加
s+td
0   2020-01-01
1   2020-01-03
2   2020-01-05
dtype: datetime64[ns]
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s-td
0   2020-01-01
1   2020-01-01
2   2020-01-01
dtype: datetime64[ns]
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s-2*td
0   2020-01-01
1   2019-12-31
2   2019-12-30
dtype: datetime64[ns]
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