# Find the sum and maximum value of the two column in excel file using Pandas

In these articles, we will discuss how to read data from excel and perform some mathematical operation and store it into a new column in DataFrame. Suppose our excel file looks like this. sample_data.xlsx

Then we have to compute the sum of two-column and find out the maximum value and store into a new DataFrame column.

Approach :

• Import Pandas module.
• Create a new column for storing Sum and maximum.
• Set the Index of each column for accessing the element.
• Store the sum of two-columns in a new column.
• And store Maximum number from two columns in a column.
• Display DataFrame.

Step 1: Importing module and reading from excel.

## Python3

 `# import module ` `import` `pandas as pd ` ` `  `# read from excel ` `# and store in a DataFram ` `df ``=` `pd.read_excel(``'excel_work/book_sample.xlsx'``) ` `df `

Output : Step 2: Create a new column for storing sum and max

## Python3

 `# creation new column ` `df[``'Total'``] ``=` `None` `df[``'Maximum'``] ``=` `None` `df `

Output : Step 3: Set an index for accessing the required column.

## Python3

 `# Set index for each column ` `index_selling``=``df.columns.get_loc(``'Selling Price'``) ` `index_cost``=``df.columns.get_loc(``'Cost price'``) ` `index_total``=``df.columns.get_loc(``'Total'``) ` `index_max``=``df.columns.get_loc(``'Maximum'``) ` ` `  `print``(index_selling,index_cost,index_total,index_max)`

Output :

```2 3 4 5
```

Step 4: Select each row and add a column and find maximum

## Python3

 `for` `row ``in` `range``(``0``, ``len``(df)): ` `    ``df.iat[row, index_total] ``=` `df.iat[row, ` `                                      ``index_selling] ``+` `df.iat[row, index_cost] ` `     `  `    ``if` `df.iat[row, index_selling] > df.iat[row, index_cost]: ` `        ``df.iat[row, index_max] ``=` `df.iat[row, index_selling] ` `    ``else``: ` `        ``df.iat[row, index_max] ``=` `df.iat[row, index_cost] ` `df `

Output : My Personal Notes arrow_drop_up Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.

Article Tags :

Be the First to upvote.

Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.