Python help please. There is no file or list given. It is just coding purpose.

Q8. summary (customer_list, filename="): takes as argument the customer_list and the additional argument filename. Similar to save CustomerInfo, if the filename is empty (*), the user wants to see the output on the screen, otherwise save the output into filename (the program must add the .txt" extension). This action shouldn't modify the customer_list in-place. Show the summary in below format: Total number of customers: 9 Total number of clerks: 4 Total time spent: 119 minutes Number of customers served by clerk-A: 3 Total time spent by clerk-A: 40 minutes Number of customers served by clerk->: > Total time spent by clerk->: > minutes Save & Run 2/12/2021, 3:49:15 AM - 2 of 2 st 6 1 2 def summary(customer_list, filename="'): 3 # write code here 4 t_time = 0 5 t_cust = 0 6 if filename == "": 7 for i in range (len (customer_list)): 8 t_time t_time + int(customer_list[i] [2]) 9 t cust + 1 10 11 print('Total number of customers:',t_cust) 12 print('Total time spent', t_time) 00 t cust = 13 Q8. summary (customer_list, filename="): takes as argument the customer_list and the additional argument filename. Similar to save CustomerInfo, if the filename is empty (*), the user wants to see the output on the screen, otherwise save the output into filename (the program must add the .txt" extension). This action shouldn't modify the customer_list in-place. Show the summary in below format: Total number of customers: 9 Total number of clerks: 4 Total time spent: 119 minutes Number of customers served by clerk-A: 3 Total time spent by clerk-A: 40 minutes Number of customers served by clerk->: > Total time spent by clerk->: > minutes Save & Run 2/12/2021, 3:49:15 AM - 2 of 2 st 6 1 2 def summary(customer_list, filename="'): 3 # write code here 4 t_time = 0 5 t_cust = 0 6 if filename == "": 7 for i in range (len (customer_list)): 8 t_time t_time + int(customer_list[i] [2]) 9 t cust + 1 10 11 print('Total number of customers:',t_cust) 12 print('Total time spent', t_time) 00 t cust = 13