how to create a while loop for my password

Question

def SignupDetails(): 

  Name= input("enter name: ")
  Age= int(input("enter your age: "))
  yeargroup= input("Enter your year group: ")
  username= Name[0:3]+str(Age)
  print("username: ",username)
  Password= input("please enter a password: ")
  Password2= input("re-enter your password to confirm: ")
  if Password != Password2:
    print("the passwords do not match")

i want to create a while loop that will make the user keep entering a password until both Password and Password2 match. Any help will be appreciated

Read [Kevin's answer](https://stackoverflow.com/a/23294659/918959), especially under the heading **Implementing Your Own Validation Rules** though reading the others wouldn't hurt either. — Antti Haapala -- Слава Україні, Oct 14 '17 at 19:36

Ashish Ranjan · Accepted Answer · 2017-10-14T19:55:35.600

1

Try this:

Password= input("please enter a password: ")
Password2= input("re-enter your password to confirm: ")

while Password != Password2:
    print("the passwords do not match")
    Password2= input("re-enter your password to confirm: ")

EDIT

You can extend this to enable the user to re-enter the first password as well, with something like this :

Password= input("please enter a password: ")
Password2= input("re-enter your password to confirm: ")

while Password != Password2:
    Password2 = input("The passwords do not match, hit enter to start again or re-enter your previous password to confirm: ")
    if Password2 == "":
        Password= input("please enter a password: ")
        Password2= input("re-enter your password to confirm: ")

edited Oct 14 '17 at 19:55

answered Oct 14 '17 at 19:32

Ashish Ranjan

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that's not really useful if you mistyped the first password.. – Oct 14 '17 at 19:35
thank you so much! sorry but is there any way to call this function without having to write SignupDetail() on the shell? – Coder777 Oct 14 '17 at 19:35
why? is there something more optimum or efficient i could use? – Coder777 Oct 14 '17 at 19:36
@efkin OP didn't mention this behaviour :) If he'll, the answer will surely get updated accordingly :) and btw this answers what is intended to be asked in the question – Ashish Ranjan Oct 14 '17 at 19:38
it's not about efficiency, it's about usability... imagine you type first "hllo" but you intended to write "hello", then in the second input you type "hell" but you realize that is a mismatch and next time you type "hello". you would think that it should work and would be trapped in confusion... – Oct 14 '17 at 19:39
@efkin i updated my code. do you think this is better? – Coder777 Oct 14 '17 at 19:52
asking both the passwords again isn't a good option @Coder777, you can try something like shown in the updated answer i.e, you should give user the choice to re-enter the first password in case they want to. – Ashish Ranjan Oct 14 '17 at 19:53
@AshishRanjan, thx for including comments in your answer! – Oct 14 '17 at 19:57
@Coder777 glad to help, it would be great if you could mark the answer as correct. It helps future visitors looking for similar answers :) – Ashish Ranjan Oct 14 '17 at 21:08

how to create a while loop for my password

1 Answers1