How do I write data to an existing file in Excel using Pandas?

Question

I used the following code to read data in file_1 then write that to a new file_2.

import pandas as pd
inventory = pd.read_excel('file_1.xlsx', skiprows=3)
inventory.to_excel('file_2.xlsx')

file_2 is a newly created file each time. How do I write the data to specific tab in an existing file without clearing out other tabs that contain data?

Answer 1

ExcelWriter can be used to append to an existing Excel file using mode='a' . Specify the sheet name with the sheet_name parameter.

with pd.ExcelWriter('file_2.xlsx', mode='a') as writer:  
    inventory.to_excel(writer, sheet_name='Sheet_name_1')