pandas group by month

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showing results for - "pandas group by month"
Jerald
31 Feb 2016
1b = pd.read_csv('b.dat')
2b.index = pd.to_datetime(b['date'],format='%m/%d/%y %I:%M%p')
3b.groupby(by=[b.index.month, b.index.year])
4# or
5b.groupby(pd.Grouper(freq='M'))  # update for v0.21+
6# or
7df.groupby(pd.TimeGrouper(freq='M'))
Léon
23 Jan 2017
1max_temp = dfall.groupby([(dfall.Date.dt.month),(dfall.Date.dt.day)])['Data_Value'].max()
2
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