city1 = types.InlineKeyboardButton('город1', callback_data='city1')
city2 = types.InlineKeyboardButton('город2', callback_data='city2')
city3 = types.InlineKeyboardButton('город3', callback_data='city3')
city4 = types.InlineKeyboardButton('город4', callback_data='city4')
city5 = types.InlineKeyboardButton('город5', callback_data='city5')
city6 = types.InlineKeyboardButton('город6', callback_data='city6')
city7 = types.InlineKeyboardButton('город7', callback_data='city7')
city8 = types.InlineKeyboardButton('город8', callback_data='city8')
markup.row(city1)
markup.row(city2)
markup.row(city3)
markup.row(city4)
markup.row(city5)
markup.row(city6)
markup.row(city7)
markup.row(city8)
for i in range(1, 10):
markup.row(types.InlineKeyboardButton(f'город{i}', callback_data=f'city{i}'))