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How to calculate cumulative sum in Pandas

Here’s how to calculate cumulative sum in Pandas.
how to calculate cumulative sum in Pandas

How to calculate cumulative sum in Pandas

To calculate a cumulative sum in Pandas just use a cumsum method which Pandas is offering to you.

import pandas as pd

my_df = pd.DataFrame({"my_column1": [9, 2, 3, 5],
                     "my_column2": [3, 7, 6, 4],
                      "my_column3": [4, 8, 8, 8]})

print(f'The cumulative sum of columns:\n{my_df.cumsum()}')

The cumulative sum of columns:
   my_column1  my_column2  my_column3
0           9           3           4
1          11          10          12
2          14          16          20
3          19          20          28

For more details see the documentation of cumsum function.

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