how to read txt file, and write into excel with multiply sheet

[jacklee26]

hi i have some questions about the index s1 = result[:3]
what if my file have more than 3 line, if my text file as below
datetime name department
20220101 James IT
20220101 Test IT
20220101 Test IT
20220101 Test IT
20220101 Test IT
20220101 Test IT
================
datetime name country
20220101 James US
20220101 Test US
20220101 Test US
================

it seems like putting a fixed index is not a good way, is there any method without using fixed index.