fixing improper ID formatting

Question

Background : The following code works to export a pandas df as an excel file:

import pandas as pd
import xlsxwriter

writer = pd.ExcelWriter('Excel_File.xlsx', engine='xlsxwriter')
df.to_excel(writer, sheet_name='Sheet1')
writer.save()

Problem : My ID column in the excel file shows up like 8.96013E+17 instead of 896013350764773376

I try to alter it in excel using format and zipcode but it still gives the wrong ID 896013350764773000

Question: Using excel or python code, how do I keep my original 896013350764773376 ID format?

Answer 1

Excel uses IEEE754 doubles to represent numbers and they have 15 digits of precision. So you are not going to be able to represent an 18 digit id as a number in Excel. You will need to convert it to a string to maintain all the digits.