OpenPyXlDiff

import openpyxl

wb = openpyxl.load_workbook("C:\Users\idaresiwins\Book1.xlsx")

sheet1 = wb.active


for word in range(1, 967):
    for comp in range(1, 621):
        if sheet1.cell(row = word, column = 1).value == sheet1.cell(row = comp, column = 2).value:
            pass
        elif sheet1.cell(row = word, column = 1).value != sheet1.cell(row = comp, column = 2).value:
            print(sheet1.cell(row = word, column = 1).value)