Group by dateime pandas

Groupby year datetime pandas

data.groupby(data.date.dt.year)

Source: stackoverflow.com

Group by dateime pandas

df['date_minus_time'] = df["_id"].apply( lambda df : 
datetime.datetime(year=df.year, month=df.month, day=df.day))	
df.set_index(df["date_minus_time"],inplace=True)

Source: blog.josephmisiti.com

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