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Python Python Basics Functions and Looping While Loops

Dominick Chism
Dominick Chism
8,857 Points
Posted by Dominick Chism
Dominick Chism
8,857 Points

Is this good code practice?

I tried to complete the invalid attempts section of this video by using just loops, but I'm unsure if it's good practice or not. I did take an Python course in college and if I remember correctly I could've swore I stumbled across a problem on StackOverflow that said sys.exit() was bad practice. Any help would be appreciated!

password = input("Please enter the super secret password: ")

MASTER_PASSWORD = 'opensesame'
i = 1
while i <= 3:
  while password != MASTER_PASSWORD:
    password = input("Invalid password, try again: ")
    i += 1
    break
if password == 'opensesame':
  print("Welcome")
else: 
  print("Too many invalid password attempts\nTotal invalid attempts: {}".format(i))

1 Answer

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

The video code segment is intended to prevent execution of some later code (not shown in the video sample) unless the correct password is entered. The use of system.exit() provided a convenient way to control program flow. Remember that the point of the lesson is just to demonstrate loop functionality.

And yes, it's more elegant to control program flow otherwise, and what you have here would do the job providing that the entire rest of the program was placed between the "welcome" message and the following "else".