Excel export into .txt file with specific format

Hello, a very fresh beginner here - I’m trying to help my wife with an automation task. I need to write a Python code, which I’d use for a Macro in Excel to export certain fields from a spreadsheet and import them into a new .txt file with a certain view.

This is my code so far:

from openpyxl import load_workbook
data_file_path = '/data/new_export.xlsx'
wb = load_workbook(data_file_path)
ws = wb['Sheet1']
row = list(ws.rows)
column = list(ws.columns)

output_file = open ('/data/output.txt', 'w')
for i in range (1, ws.max_row + 1):
    iban_code = ws.cell(row=i, column=1).value
    company = ws.cell(row=i, column=2).value
    iban_number = ws.cell(row=i, column=3).value
    bic = ws.cell(row=i, column=4).value
    currency = ws.cell(row=i, column=5).value
    amount = ws.cell(row=i, column=6).value
    inv_number = ws.cell(row=i, column=7).value
    for j in range (1, ws.max_column + 1):
        output_file.write(???????)
output_file.close()
What do I need to write in the output brackets, so that I can have an output in the .txt file like this (for every row in the Excel file): 

iban_code || company || iban_number || bic || currency || amount || inv_number
iban_code || company || iban_number || bic || currency || amount || inv_number
iban_code || company || iban_number || bic || currency || amount || inv_number
etc. 

You could do something like this:

print(' || '.join([iban_code, company, iban_number, bic, currency, amount, inv_number]), file=output_file)

You might need to stringify some of the values, for example:

print(' || '.join([iban_code, company, iban_number, bic, currency, str(amount), inv_number]), file=output_file)

Thanks a lot, really, that solved my problem :)))