Iterate over Excel columns using openpyxl

from openpyxl import Workbook, worksheet, load_workbook

wb: Workbook = load_workbook(filename="data.xlsx")
ws: worksheet = wb.active

end_column = ws.max_column
start_column = 1
column_index = start_column

while column_index <= end_column:
    # here we just want first row
    print(ws.cell(1, column_index).value)
    column_index += 1