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Same month cumulative sum

What is the best way to have a cumulative total of data values when the "month" in the date column is the same? Can this be done using resample() + sum()?

I'm thinking I can probably use something off the shelf in python instead of creating a custom function.

Want:

Input:
             Value 
Date                   
2015-01-01   1 
2014-01-01   2
2017-03-01   3 
2015-04-01   4 
2016-03-01   5 

Output:
             Value 
Month                   
January      3 
March        8
April        4

Thanks!

over 4 years ago · Santiago Trujillo

2 Respostas

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I would prefer a more straightforward approach with index.month_name:

df.groupby(df.index.month_name()).sum()

over 4 years ago · Santiago Trujillo Relatório

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Encontrar trabalhos remotos

Accepted Answer · 2022-05-16T22:35:45.816Z

In your case , this can help you out

out = df.groupby(df.index.strftime('%b')).sum()

output:

      Value
Date       
Apr       4
Jan       3
Mar       8

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Same month cumulative sum

2 Respostas

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Encontrar trabalhos remotos

Andres GPT