adding_symbols_at_the_end_of_a_line

new_line = ""
with open('C:\\Users\\Pacho\\Desktop\\cam file.txt', 'r') as f:
    for line in f:
        new_line += line.strip() + " ;\n"
    f.close()

with open('C:\\Users\\Pacho\\Desktop\\cam file.txt', 'w') as f:
    f.write(new_line)
    f.close()