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Python code

data.csv

​x
 
import pandas as pd​data = [[10, 18, 11], [13, 15, 8], [9, 20, 3]]​df = pd.DataFrame(data)​print(df.cumsum())​

      0   1   2
  0  10  18  11
  1  23  33  19
  2  32  53  22